Cross Reference: /src/sys/dev/sysmon

History log of /src/sys/dev/sysmon
Revision	Date	Author	Comments
1.15	24-Apr-2015	pgoyette	Update configuration definitions for new sysmon
1.14	06-Sep-2012	macallan	branches: 1.14.2; 1.14.16; defflag debug #defines
1.13	19-Oct-2010	pgoyette	branches: 1.13.8; Add a new software-only sensor device. This is intended for use as a kernel module, and can be helpful to generate sysmon_envsys events when creating/modifying powerd scripts. This will also be used in an upcoming series of atf tests for sysmon_envsys itself.
1.12	22-Jul-2010	pgoyette	Convert swwdog(4) from a simple defpseudo device to a defpseudodev so that we can attach a power management handler. The handler prevents a suspend if the watchdog is active, to be consistent with other watchdog drivers. As discussed on tech-kern.
1.11	30-Jan-2010	pooka	branches: 1.11.2; 1.11.4; Make swwdog use no-needs-count. As the manpage says, there can be only one.
1.10	04-Sep-2007	xtraeme	branches: 1.10.24; - Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.9	02-Sep-2007	xtraeme	Remove unused (and inexistent) flag.
1.8	21-Jul-2007	xtraeme	branches: 1.8.4; 1.8.6; 1.8.8; Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.7	20-Jul-2007	xtraeme	Move the functions to create/update objects in a dictionary into its own file, and DO NOT MAKE THEM inline AS IT IS WRONG. Looks like I'm very stupid and I didn't know what inline meant. Thank you very much YAMAMOTO Takashi.
1.6	01-Jul-2007	xtraeme	branches: 1.6.2; Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.5	11-Dec-2005	christos	branches: 1.5.30; 1.5.32; merge ktrace-lwp.
1.4	09-Jan-2005	smb	branches: 1.4.10; Add a software watchdog timer facility. Because this slightly changes the "tickle" model of wdogctl(8), it was modified as well; while I was in there, I cleaned up the argument parsing. The code was reviewed by simonb@.
1.3	20-Apr-2003	thorpej	branches: 1.3.2; Generic "task queue" for sysmon back-ends. This provides a thread context for callbacks that require it in order to handle sysmon-related events. Adapted from the "OsdSchedule" bits of the ACPI code.
1.2	17-Apr-2003	thorpej	Start at a power management framework for sysmon. Right now we just provide some VERY basic support for power/sleep buttons and lid switches; if someone presses the power button, shut down the system semi-gracefully. Eventually, we will send events for all types of button/lid events down to a userland power management daemon, which will be able to define a separate policy for each button/switch.
1.1	16-Apr-2002	thorpej	branches: 1.1.6; 1.1.8; Move sysmon configuration definitions to dev/sysmon/files.sysmon.
1.1.8.2	23-Jun-2002	jdolecek	catch up with -current on kqueue branch
1.1.8.1	16-Apr-2002	jdolecek	file files.sysmon was added on branch kqueue on 2002-06-23 17:48:55 +0000
1.1.6.2	20-Jun-2002	nathanw	Catch up to -current.
1.1.6.1	16-Apr-2002	nathanw	file files.sysmon was added on branch nathanw_sa on 2002-06-20 03:46:47 +0000
1.3.2.1	17-Jan-2005	skrll	Sync with HEAD.
1.4.10.2	27-Oct-2007	yamt	sync with head.
1.4.10.1	03-Sep-2007	yamt	sync with head.
1.5.32.1	11-Jul-2007	mjf	Sync with head.
1.5.30.3	09-Oct-2007	ad	Sync with head.
1.5.30.2	20-Aug-2007	ad	Sync with HEAD.
1.5.30.1	15-Jul-2007	ad	Sync with head.
1.6.2.3	10-Sep-2007	skrll	Sync with HEAD.
1.6.2.2	03-Sep-2007	skrll	Sync with HEAD.
1.6.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.8.8.2	21-Jul-2007	xtraeme	Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.8.8.1	21-Jul-2007	xtraeme	file files.sysmon was added on branch matt-mips64 on 2007-07-21 23:15:18 +0000
1.8.6.1	06-Nov-2007	matt	sync with HEAD
1.8.4.2	02-Oct-2007	joerg	Sync with HEAD.
1.8.4.1	03-Sep-2007	jmcneill	Sync with HEAD.
1.10.24.2	11-Aug-2010	yamt	sync with head.
1.10.24.1	11-Mar-2010	yamt	sync with head
1.11.4.1	05-Mar-2011	rmind	sync with head
1.11.2.2	22-Oct-2010	uebayasi	Sync with HEAD (-D20101022).
1.11.2.1	17-Aug-2010	uebayasi	Sync with HEAD.
1.13.8.1	30-Oct-2012	yamt	sync with head
1.14.16.1	06-Jun-2015	skrll	Sync with HEAD
1.14.2.1	03-Dec-2017	jdolecek	update from HEAD
1.20	10-Feb-2024	andvar	Fix various typos in comments, log messages and documentation.
1.19	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.18	11-Jun-2020	thorpej	Update for proplib(3) API changes.
1.17	08-Jun-2020	thorpej	Update for proplib(3) API changes.
1.16	16-Mar-2020	pgoyette	Use the module subsystem's ability to process SYSCTL_SETUP() entries to automate installation of sysctl nodes. Note that there are still a number of device and pseudo-device modules that create entries tied to individual device units, rather than to the module itself. These are not changed.
1.15	25-Apr-2015	pgoyette	branches: 1.15.18; Remove another debug printf() that snuck in.
1.14	23-Apr-2015	pgoyette	Update module dependencies for all the existing modules that depend on sysmon components.
1.13	27-Aug-2012	pgoyette	branches: 1.13.2; 1.13.16; Add hw.swsensor.state variable for additional control capability.
1.12	19-Jun-2011	pgoyette	branches: 1.12.2; 1.12.8; Use {...} to prevent premature exit from initialization function - this lets the atf tests run again. Move validation of current value vs min/max into the refresh routine where it will get checked every time, not just at initialization. While here, do a little more housekeeping: - Retrieve numeric property value once - Ensure that a numeric-specified sensor type is valid - printout any unrecognized properties (DEBUG only)
1.11	19-Jun-2011	pgoyette	Use correct routine to retrieve string value from prop-dictionary
1.10	19-Jun-2011	pgoyette	Rather than requiring the user to know the internal encoding of sensor types, allow the user to specify the type using the units description. XXX Numeric specification is still permitted but will be removed soon.
1.9	04-Jun-2011	pgoyette	Remove ability to the value_avg since it no longer exists
1.8	04-Jun-2011	pgoyette	Enable creation of value_{max,min,avg} entries via the proplist, as well as setting the ENVSYS_FPERCENT flag
1.7	17-Dec-2010	pooka	branches: 1.7.2; 1.7.6; 1.7.8; use aprint
1.6	16-Dec-2010	pgoyette	Also allow specification of sensor's initial value when it is loaded, using "-i value=<value>". Suggested by njoly@
1.5	11-Dec-2010	pgoyette	Enhance the swsensor(4) pseudo-device's capabilities to emulate more sensor types
1.4	23-Oct-2010	pooka	Revert 1.2 apart from incorrect comment. the devattach() routine is of course still used by kernel&config pseudodev. pointed out by jakllsch
1.3	20-Oct-2010	pooka	branches: 1.3.2; Set sensor state to valid upon refresh to make things generally work. pgoyette ok
1.2	20-Oct-2010	pooka	remove unused routine (per comment)
1.1	19-Oct-2010	pgoyette	Add a new software-only sensor device. This is intended for use as a kernel module, and can be helpful to generate sysmon_envsys events when creating/modifying powerd scripts. This will also be used in an upcoming series of atf tests for sysmon_envsys itself.
1.3.2.3	06-Nov-2010	uebayasi	Sync with HEAD.
1.3.2.2	22-Oct-2010	uebayasi	Sync with HEAD (-D20101022).
1.3.2.1	20-Oct-2010	uebayasi	file swsensor.c was added on branch uebayasi-xip on 2010-10-22 07:22:17 +0000
1.7.8.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.7.6.3	12-Jun-2011	rmind	sync with head
1.7.6.2	05-Mar-2011	rmind	sync with head
1.7.6.1	17-Dec-2010	rmind	file swsensor.c was added on branch rmind-uvmplock on 2011-03-05 20:54:08 +0000
1.7.2.1	06-Jun-2011	jruoho	Sync with HEAD.
1.12.8.1	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #546): sys/dev/sysmon/swsensor.c: revision 1.13 share/man/man4/swsensor.4: revision 1.11 share/man/man4/swsensor.4: revision 1.12 Add hw.swsensor.state variable for additional control capability. Mention the new sysctl variable just created. Drop trailing whitespace.
1.12.2.1	30-Oct-2012	yamt	sync with head
1.13.16.1	06-Jun-2015	skrll	Sync with HEAD
1.13.2.1	03-Dec-2017	jdolecek	update from HEAD
1.15.18.1	08-Apr-2020	martin	Merge changes from current as of 20200406
1.24	07-Nov-2024	rin	swwdog: Use SYSCTL_DESCR() to comply with SYSCTL_INCLUDE_DESCR option
1.23	31-Dec-2021	riastradh	branches: 1.23.10; sysmon: Delete trailing whitespace. No functional change intended.
1.22	16-Mar-2020	pgoyette	Use the module subsystem's ability to process SYSCTL_SETUP() entries to automate installation of sysctl nodes. Note that there are still a number of device and pseudo-device modules that create entries tied to individual device units, rather than to the module itself. These are not changed.
1.21	01-Jan-2020	thorpej	- Introduce a new global kernel variable "shutting_down" to indicate that the system is shutting down or rebooting. - Set this global in a new function called kern_reboot(), which is currently just a basic wrapper around cpu_reboot(). - Call kern_reboot() instead of cpu_reboot() almost everywhere; a few places remain where it's still called directly, but those are in early pre-main() machdep locations. Eventually, all of the various cpu_reboot() functions should be re-factored and common functionality moved to kern_reboot(), but that's for another day.
1.20	27-Mar-2019	pgoyette	Don't create the driver's workqueue twice! The driver is modular, so its modcmd(MOULE_CMD_INIT) always gets called whether or not the driver is built-in to the kernel. The modcmd init code always calls swwdogattach() which creates the workqueue. Therefore there's no need to also create it in swwdog_attach() (used to attach a device instance).
1.19	12-May-2015	pgoyette	branches: 1.19.8; 1.19.18; Finish work started in previous commit. Ensure that initialization code is only called once for built-in variants of the module.
1.18	12-May-2015	pgoyette	Don't manipulate the autoconfig databases for built-in module. Thanks, christos!
1.17	24-Apr-2015	christos	We only need the _cd when we are a module.
1.16	23-Apr-2015	pgoyette	Update module dependencies for all the existing modules that depend on sysmon components.
1.15	18-Apr-2015	pgoyette	Remove some debugging printf()s that were erroneously committed.
1.14	18-Apr-2015	pgoyette	Update attach/detach routines and provide MODULE interface. Confirmed that atf tests (which run via rump) still pass, and also confirmed that panic/reboot work in both monolithic kernel and loaded module.
1.13	13-Apr-2014	pgoyette	branches: 1.13.4; If we pmf_register on attach, we should pmf_deregister on detach.
1.12	11-Nov-2010	pooka	branches: 1.12.8; 1.12.18; 1.12.22; 1.12.32; Apparently swwdog reboot hasn't worked in several years since it tried to cpu_reboot() from a callout. Make it reboot from a workq instead. problem made manifest by atf test rumpfs unmount flush caused issue to un-shush tested: rump kernel (tests/dev/sysmon) and qemu
1.11	06-Aug-2010	pooka	* fix logic inversion in swwdog_reboot (and the sysctl). * attach sysctl in constructor instead of as a link set to give it a chance to work in a module * teardown sysctl when driver is detached to avoid dangling pointer
1.10	22-Jul-2010	pgoyette	Convert swwdog(4) from a simple defpseudo device to a defpseudodev so that we can attach a power management handler. The handler prevents a suspend if the watchdog is active, to be consistent with other watchdog drivers. As discussed on tech-kern.
1.9	31-Jan-2010	pooka	branches: 1.9.2; 1.9.4; print newline after timer expiry message
1.8	30-Jan-2010	pooka	Make swwdog use no-needs-count. As the manpage says, there can be only one.
1.7	09-Jul-2007	ad	branches: 1.7.32; Merge some of the less invasive changes from the vmlocking branch: - kthread, callout, devsw API changes - select()/poll() improvements - miscellaneous MT safety improvements
1.6	29-Jan-2007	hubertf	branches: 1.6.6; 1.6.8; Remove more duplicate headers. Patch by Slava Semushin <slava.semushin@gmail.com> Again, this was tested by comparing obj files from a pristine and a patched source tree against an i386/ALL kernel, and also for src/sbin/fsck_ffs, src/sbin/fsdb and src/usr.sbin/makefs. Only changes in assert() line numbers were detected in 'objdump -d' output.
1.5	19-Dec-2006	smb	Handle new gcc properly
1.4	11-Dec-2005	christos	branches: 1.4.20; 1.4.22; merge ktrace-lwp.
1.3	17-Oct-2005	simonb	Spinkle some KNF.
1.2	27-Feb-2005	perry	branches: 1.2.4; nuke trailing whitespace
1.1	09-Jan-2005	smb	branches: 1.1.2; 1.1.4; 1.1.6; Add a software watchdog timer facility. Because this slightly changes the "tickle" model of wdogctl(8), it was modified as well; while I was in there, I cleaned up the argument parsing. The code was reviewed by simonb@.
1.1.6.1	19-Mar-2005	yamt	sync with head. xen and whitespace. xen part is not finished.
1.1.4.4	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.1.4.3	04-Mar-2005	skrll	Sync with HEAD. Hi Perry!
1.1.4.2	17-Jan-2005	skrll	Sync with HEAD.
1.1.4.1	09-Jan-2005	skrll	file swwdog.c was added on branch ktrace-lwp on 2005-01-17 19:31:52 +0000
1.1.2.1	29-Apr-2005	kent	sync with -current
1.2.4.4	03-Sep-2007	yamt	sync with head.
1.2.4.3	26-Feb-2007	yamt	sync with head.
1.2.4.2	30-Dec-2006	yamt	sync with head.
1.2.4.1	21-Jun-2006	yamt	sync with head.
1.4.22.1	21-Dec-2006	yamt	sync with head.
1.4.20.2	01-Feb-2007	ad	Sync with head.
1.4.20.1	12-Jan-2007	ad	Sync with head.
1.6.8.1	11-Jul-2007	mjf	Sync with head.
1.6.6.1	01-Jul-2007	ad	Adapt to callout API change.
1.7.32.2	11-Aug-2010	yamt	sync with head.
1.7.32.1	11-Mar-2010	yamt	sync with head
1.9.4.1	05-Mar-2011	rmind	sync with head
1.9.2.1	17-Aug-2010	uebayasi	Sync with HEAD.
1.12.32.1	10-Aug-2014	tls	Rebase.
1.12.22.1	18-May-2014	rmind	sync with head
1.12.18.2	03-Dec-2017	jdolecek	update from HEAD
1.12.18.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.12.8.1	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.13.4.1	06-Jun-2015	skrll	Sync with HEAD
1.19.18.2	08-Apr-2020	martin	Merge changes from current as of 20200406
1.19.18.1	10-Jun-2019	christos	Sync with HEAD
1.19.8.2	17-May-2017	pgoyette	Use correct variable name
1.19.8.1	17-May-2017	pgoyette	At suggestion of chuq@, modify config_attach_pseudo() to return with a reference held on the device. Adapt callers to expect the reference to exist, and to ensure that the reference is released.
1.23.10.1	02-Aug-2025	perseant	Sync with HEAD
1.32	28-Mar-2022	riastradh	driver(9): devsw_detach never fails. Make it return void. Prune a whole lotta dead branches as a result of this. (Some logic calling this is also wrong for other reasons; devsw_detach is final -- you should never have any reason to decide to roll it back. To be cleaned up in subsequent commits...) XXX kernel ABI change to devsw_detach signature requires bump
1.31	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.30	26-Aug-2019	nakayama	Module class of sysmon_envsys, sysmon_wdog and sysmon_power is MODULE_CLASS_DRIVER, not MODULE_CLASS_MISC. Fix that invoking envsys without sysmon_envsys kernel module failes with: WARNING: module error: incompatible module class for `sysmon_envsys' (1 != 3)
1.29	26-Apr-2019	pgoyette	branches: 1.29.2; Set the "required modules" to NULL, not to an empty string. It really doesn't make that much difference to the code, but the output from modstat(8) is different! (With an empty string in the MODULE() macro modstat reports an empty string, but with a NULL in the macro, modstat prints a '-' just like it does for other "empty" fields.)
1.28	05-May-2015	pgoyette	branches: 1.28.2; 1.28.8; 1.28.10; 1.28.18; Optimize a bit - don't re-enter the mutex if we're just going to exit. While here, remove some parens around a return value.
1.27	05-May-2015	pgoyette	If module_autoload() returns an error, just return that value instead of overwriting with ENODEV. Thanks, christos!
1.26	04-May-2015	pgoyette	If autoload of the subcomponent module fails, don't try to call its open routine. Just return an error. Hopefully this will fix the recently reported issues with atf tests running on xen guest.
1.25	29-Apr-2015	pgoyette	At suggestion from riastradh@ ... Remove auto_configure(9) goop from sysmon device. It does make things a bit cleaner, and also reduces source code by about 10%. Tested via QEMU with no obvious side-effects.
1.24	25-Apr-2015	pgoyette	Correctly check return status when registering with pmf
1.23	25-Apr-2015	pgoyette	Fix typo - thanks, riz@
1.22	25-Apr-2015	pgoyette	Register the sysmon pseudo-device with power management framework so we can properly suspend the system. Thanks, mrg, for pointing this out.
1.21	24-Apr-2015	pgoyette	With new (corrected) configuration declarations file, the cdevsw is already included by config. So, for built-in sysmon module we don't need to add the cdevsw to the table.
1.20	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.19	25-Jul-2014	dholland	branches: 1.19.4; Add d_discard to all struct cdevsw instances I could find. All have been set to "nodiscard"; some should get a real implementation.
1.18	16-Mar-2014	dholland	branches: 1.18.2; Change (mostly mechanically) every cdevsw/bdevsw I can find to use designated initializers. I have not built every extant kernel so I have probably broken at least one build; however I've also found and fixed some wrong cdevsw/bdevsw entries so even if so I think we come out ahead.
1.17	03-Mar-2008	xtraeme	branches: 1.17.38; 1.17.48; 1.17.54; Pass D_MPSAFE to d_flag in the cdevsw struct, so that the kernel_lock is not taken in the driver methods. I've been running with this for some days without any effect.
1.16	04-Jan-2008	ad	branches: 1.16.2; 1.16.6; Start detangling lock.h from intr.h. This is likely to cause short term breakage, but the mess of dependencies has been regularly breaking the build recently anyhow.
1.15	04-Mar-2007	christos	branches: 1.15.16; 1.15.22; 1.15.28; Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
1.14	16-Nov-2006	christos	branches: 1.14.4; __unused removal on arguments; approved by core.
1.13	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.12	03-Sep-2006	christos	branches: 1.12.2; 1.12.4; add missing initializers
1.11	11-Dec-2005	christos	branches: 1.11.4; 1.11.8; merge ktrace-lwp.
1.10	29-Jun-2003	fvdl	branches: 1.10.2; 1.10.18; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.9	28-Jun-2003	darrenr	Pass lwp pointers throughtout the kernel, as required, so that the lwpid can be inserted into ktrace records. The general change has been to replace "struct proc " with "struct lwp " in various function prototypes, pass the lwp through and use l_proc to get the process pointer when needed. Bump the kernel rev up to 1.6V
1.8	18-Apr-2003	thorpej	* Add a generic power management event API, defined in <sys/power.h>. Right now, only power switch state change events are supported. This is a work-in-progress. * Add support to sysmon for delivering power mangement events to userland. Add poll, kqueue, and read entry points to sysmon. * Adapt ACPI to use the new generic <sys/power.h> event types. This provides the kernel support for a forthcoming powerd(8) which can do nice things like gracefully shut the system down when an ACPI power button is pressed.
1.7	23-Oct-2002	jdolecek	merge kqueue branch into -current kqueue provides a stateful and efficient event notification framework currently supported events include socket, file, directory, fifo, pipe, tty and device changes, and monitoring of processes and signals kqueue is supported by all writable filesystems in NetBSD tree (with exception of Coda) and all device drivers supporting poll(2) based on work done by Jonathan Lemon for FreeBSD initial NetBSD port done by Luke Mewburn and Jason Thorpe
1.6	06-Sep-2002	gehenna	Merge the gehenna-devsw branch into the trunk. This merge changes the device switch tables from static array to dynamically generated by config(8). - All device switches is defined as a constant structure in device drivers. - The new grammer ``device-major'' is introduced to ``files''. device-major <prefix> char <num> [block <num>] [<rules>] - All device major numbers must be listed up in port dependent majors.<arch> by using this grammer. - Added the new naming convention. The name of the device switch must be <prefix>_[bc]devsw for auto-generation of device switch tables. - The backward compatibility of loading block/character device switch by LKM framework is broken. This is necessary to convert from block/character device major to device name in runtime and vice versa. - The restriction to assign device major by LKM is completely removed. We don't need to reserve LKM entries for dynamic loading of device switch. - In compile time, device major numbers list is packed into the kernel and the LKM framework will refer it to assign device major number dynamically.
1.5	13-Nov-2001	lukem	branches: 1.5.8; add RCSIDs
1.4	05-Nov-2000	thorpej	branches: 1.4.2; 1.4.4; 1.4.6; 1.4.8; Split the envsys and watchdog parts of sysmon into their own files.
1.3	04-Nov-2000	thorpej	Add a watchog timer framework to the system monitor.
1.2	28-Jun-2000	thorpej	branches: 1.2.2; Fix a couple of brain-o's in error cases, and use PCATCH for the sysmon mutex wait.
1.1	24-Jun-2000	thorpej	Add a clearing-house pseudo-device for system monitoring devices such as the LM78 and VT82C686A (and eventually ACPI). Multiple sensor devices can be hooked registered with `sysmon', and eventually sysmon will also handle hardware (and software) watchdog timers. Convert the `lm' and `viaenv' drivers to the new interface.
1.2.2.3	30-Jul-2000	bouyer	pull up 1.1 -> 1.2 (requested by thorpej): Fix a couple of brain-o's in error cases, and use PCATCH for the sysmon mutex wait.
1.2.2.2	30-Jul-2000	bouyer	Pull up (requested by thorpej): lm_pnpbios.c 1.2->1.3 files 1.374->1.375 nslm7x.c 1.3->1.4 nslm7xvar.h 1.2->1.3 lm_isa.c 1.2->1.3 files.pci 1.96->1.97 viaenv.c 1.2->1.3 sysmon.c 1.1 sysmonvar.h 1.1 Add a clearing-house pseudo-device for system monitoring devices such as the LM78 and VT82C686A (and eventually ACPI). Multiple sensor devices can be hooked registered with `sysmon', and eventually sysmon will also handle hardware (and software) watchdog timers. Convert the `lm' and `viaenv' drivers to the new interface.
1.2.2.1	28-Jun-2000	bouyer	file sysmon.c was added on branch netbsd-1-5 on 2000-07-30 17:54:16 +0000
1.4.8.1	18-Sep-2001	fvdl	Various changes to make cloning devices possible: * Add an extra argument (struct vnode *) to VOP_OPEN. If it is not NULL, specfs will create a cloned (aliased) vnode during the call, and return it there. The caller should release and unlock the original vnode if a new vnode was returned. The new vnode is returned locked. Add a flag field to the cdevsw and bdevsw structures. DF_CLONING indicates that it wants a new vnode for each open (XXX is there a better way? devprop?) * If a device is cloning, always call the close entry point for a VOP_CLOSE. Also, rewrite cons.c to do the right thing with vnodes. Use VOPs rather then direct device entry calls. Suggested by mycroft@ Light to moderate testing done an i386 system (arch doesn't matter though, these are MI changes).
1.4.6.2	10-Oct-2002	jdolecek	sync kqueue with -current; this includes merge of gehenna-devsw branch, merge of i386 MP branch, and part of autoconf rototil work
1.4.6.1	10-Jan-2002	thorpej	Sync kqueue branch with -current.
1.4.4.3	11-Nov-2002	nathanw	Catch up to -current
1.4.4.2	17-Sep-2002	nathanw	Catch up to -current.
1.4.4.1	14-Nov-2001	nathanw	Catch up to -current.
1.4.2.3	22-Nov-2000	bouyer	Sync with HEAD.
1.4.2.2	20-Nov-2000	bouyer	Update thorpej_scsipi to -current as of a month ago A i386 GENERIC kernel compiles without the siop, ahc and bha drivers (will be updated later). i386 IDE/ATAPI and ncr work, as well as sparc/esp_sbus. alpha should work as well (untested yet). siop, ahc and bha will be updated once I've updated the branch to current -current, as well as machine-dependant code.
1.4.2.1	05-Nov-2000	bouyer	file sysmon.c was added on branch thorpej_scsipi on 2000-11-20 11:43:12 +0000
1.5.8.1	16-May-2002	gehenna	Add the character device switch.
1.10.18.5	17-Mar-2008	yamt	sync with head.
1.10.18.4	21-Jan-2008	yamt	sync with head
1.10.18.3	03-Sep-2007	yamt	sync with head.
1.10.18.2	30-Dec-2006	yamt	sync with head.
1.10.18.1	21-Jun-2006	yamt	sync with head.
1.10.2.3	21-Sep-2004	skrll	Fix the sync with head I botched.
1.10.2.2	18-Sep-2004	skrll	Sync with HEAD.
1.10.2.1	02-Jul-2003	darrenr	Apply the aborted ktrace-lwp changes to a specific branch. This is just for others to review, I'm concerned that patch fuziness may have resulted in some errant code being generated but I'll look at that later by comparing the diff from the base to the branch with the file I attempt to apply to it. This will, at the very least, put the changes in a better context for others to review them and attempt to tinker with removing passing of 'struct lwp' through the kernel.
1.11.8.1	03-Sep-2006	yamt	sync with head.
1.11.4.1	09-Sep-2006	rpaulo	sync with head
1.12.4.2	10-Dec-2006	yamt	sync with head.
1.12.4.1	22-Oct-2006	yamt	sync with head
1.12.2.1	18-Nov-2006	ad	Sync with head.
1.14.4.1	12-Mar-2007	rmind	Sync with HEAD.
1.15.28.1	08-Jan-2008	bouyer	Sync with HEAD
1.15.22.1	18-Feb-2008	mjf	Sync with HEAD.
1.15.16.2	23-Mar-2008	matt	sync with HEAD
1.15.16.1	09-Jan-2008	matt	sync with HEAD
1.16.6.1	03-Apr-2008	mjf	Sync with HEAD.
1.16.2.1	24-Mar-2008	keiichi	sync with head.
1.17.54.1	18-May-2014	rmind	sync with head
1.17.48.2	03-Dec-2017	jdolecek	update from HEAD
1.17.48.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.17.38.1	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.18.2.1	10-Aug-2014	tls	Rebase.
1.19.4.1	06-Jun-2015	skrll	Sync with HEAD
1.28.18.2	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.28.18.1	10-Jun-2019	christos	Sync with HEAD
1.28.10.1	26-Aug-2019	martin	Pull up following revision(s) (requested by nakayama in ticket #1344): sys/dev/sysmon/sysmon.c: revision 1.30 Module class of sysmon_envsys, sysmon_wdog and sysmon_power is MODULE_CLASS_DRIVER, not MODULE_CLASS_MISC. Fix that invoking envsys without sysmon_envsys kernel module failes with: WARNING: module error: incompatible module class for `sysmon_envsys' (1 != 3)
1.28.8.2	29-Apr-2017	pgoyette	Remove explicit inclusion of <sys/localcount.h> since there is no explicit usage of localcounts here. <sys/conf.h> will take care of including as needed.
1.28.8.1	27-Apr-2017	pgoyette	Restore all work from the former pgoyette-localcount branch (which is now abandoned doe to cvs merge botch). The branch now builds, and installs via anita. There are still some problems (cgd is non-functional and all atf tests time-out) but they will get resolved soon.
1.28.2.3	26-Jul-2016	pgoyette	Rename LOCALCOUNT_INITIALIZER to DEVSW_MODULE_INIT. This better describes what we're doing, and why.
1.28.2.2	19-Jul-2016	pgoyette	Instead of repeatedly typing the conditional initialization of the .d_localcount members in the various {b,c}devsw, define an initializer macro and use it. This also removes the need for defining new symbols for each 'struct localcount'. As suggested by riastradh@
1.28.2.1	18-Jul-2016	pgoyette	Rump drivers are always installed via devsw_attach() so we need to always allocate a 'struct localcount' for these drivers whenever they are built as modules.
1.29.2.1	26-Aug-2019	martin	Pull up following revision(s) (requested by nakayama in ticket #118): sys/dev/sysmon/sysmon.c: revision 1.30 Module class of sysmon_envsys, sysmon_wdog and sysmon_power is MODULE_CLASS_DRIVER, not MODULE_CLASS_MISC. Fix that invoking envsys without sysmon_envsys kernel module failes with: WARNING: module error: incompatible module class for `sysmon_envsys' (1 != 3)
1.151	20-May-2022	andvar	s/appropiate/appropriate/ in comments and readme file.
1.150	31-Dec-2021	riastradh	sysmon(9): Fix callout/thread synchronization. Callout may ONLY take sme_work_mtx, at IPL_SOFTCLOCK; MUST NOT touch sme_mtx at IPL_NONE. All state the callout needs is serialized by sme_work_mtx now: - calls to sme_schedule_callout - calls to sme_schedule_halt - struct sysmon_envsys::sme_events_timeout - struct sysmon_envsys::sme_events_list - struct sysmon_envsys::sme_callout_state - struct envsys_data::flags => yes, this is a little silly -- used for ENVSYS_FNEED_REFRESH => should maybe separate the static driver-defined features from the state flags needed by sysmon_envsys but not important now Sleeping under sme_work_mtx (except on other adaptive locks at IPL_SOFTCLOCK) is forbidden. Calling out to the driver under sme_work_mtx is forbidden. This should properly fix: https://mail-index.netbsd.org/tech-kern/2015/10/14/msg019511.html PR kern/56592
1.149	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.148	07-Sep-2021	andvar	s/aquire/acquire/ in comments, also one typo fix acqure->acquire.
1.147	11-Jun-2020	thorpej	Update for proplib(3) API changes.
1.146	08-Jun-2020	thorpej	Update for proplib(3) API changes.
1.145	01-Jun-2020	riastradh	Don't queue sysmon refresh until the rndsource is attached. Using the rndsource, as refreshing the sensors will do, is not allowed until _after_ rnd_source_attach. XXX pullup-7 XXX pullup-8 XXX pullup-9
1.144	26-Mar-2019	bad	branches: 1.144.4; in sysmon_envsys_unregister(): loop over sme_sensors_list with TAILQ_FIRST instead of TAILQ_FOREACH. sysmon_envsys_sensor_detach() removes the sensor from sme_sensors_list. Hence using TAILQ_FOREACH is not safe. Suggested by thorpej and jmcneill. Thanks!
1.143	26-May-2018	thorpej	branches: 1.143.2; Avoid dereferencing NULL if we attempt to look up an known unit type.
1.142	05-May-2018	pgoyette	Defend against some table-lookup-not-found errors.
1.141	11-Sep-2017	pgoyette	branches: 1.141.2; Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533 XXX Pullup-8 along with the previous fixes from msaitoh@ XXX http://mail-index.netbsd.org/source-changes/2017/09/06/msg088028.html ~ ~
1.140	06-Sep-2017	msaitoh	Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d". Don't call rnd_detach_source() in sme_remove_event() which is called from sme_event_unregister_all(). Instead, call rnd_detach_source() in sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach() before sme_event_unregister_sensor(). Each sensor(envsys_data) has each rnd_src, but some sme_events point to the same rnd_src in a sensor. Calling rnd_detach_souce() twice with the same rnd_src brokes a reference count in rnd_src. OK'd by pgoyette@.
1.139	14-Dec-2015	pgoyette	branches: 1.139.10; sysmon's components need to be MODULE_CLASS_DRIVER so they will get initialized before we configure/initialize any devices that interact with them. Thanks, marty!
1.138	13-Dec-2015	jdc	Note the sensor number in the error output. Useful for drivers adding multiple sensors.
1.137	25-Apr-2015	pgoyette	Handle early initialization requirements - thanks martin@ and others
1.136	25-Apr-2015	christos	make things boot again, from martin.
1.135	25-Apr-2015	pgoyette	Use tabs for indentation.
1.134	25-Apr-2015	pgoyette	Release the mutex in the error path.
1.133	24-Apr-2015	pgoyette	The sysmon_envsys module also depends on sysmon_power (for delivery of sensor events to userland).
1.132	24-Apr-2015	pgoyette	Remove a left-over debugging printf()
1.131	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.130	13-Apr-2015	riastradh	Convert sys/dev to use <sys/rndsource.h>.
1.129	14-Mar-2015	hannken	Add a counter of busy events and stop enqueueing more work if a device is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.128	23-Nov-2014	ozaki-r	branches: 1.128.2; Pull workqueue_destroy out of sme->sme_mtx workqueue_destroy may sleep so we shouldn't run it with holding a mutex. Requested by riastradh@.
1.127	10-Aug-2014	tls	branches: 1.127.2; Merge tls-earlyentropy branch into HEAD.
1.126	29-Nov-2012	msaitoh	branches: 1.126.10; Remove trailing white space(s) from name of random source. And also, changind space(s) in the middle with '-'. PR#47232.
1.125	06-Sep-2012	pgoyette	branches: 1.125.2; Remove (commented-out) definitions for debugging - thanks to macallan@ for defflagging these.
1.124	27-Aug-2012	pgoyette	Fix indentation. No code change.
1.123	27-Aug-2012	pgoyette	Simplify some logic - no functional change intended. While here, clean up a couple of comments.
1.122	19-Jul-2012	pgoyette	Make sure to re-add the sensor as an entropy source after user request to reset (via envstat -S)
1.121	16-Jul-2012	pgoyette	Extend previous changes so that even sensors which don't use a refresh() callback to update the value can be polled to provide rnd(4) entropy.
1.120	15-Jul-2012	pgoyette	If a sensor is flagged as capable of providing rnd(4) with entropy, hook the sensor into rnd subsystem, and make sure we periodically refresh the sensor whether or not it is being actively monitored.
1.119	15-Jul-2012	pgoyette	When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.118	18-Feb-2012	matt	Don't export sysmon_envsys_list as a common.
1.117	01-Aug-2011	mbalmer	branches: 1.117.2; 1.117.6; 1.117.8; According to the Oxford Dictionary of Etymology, a wether is a male sheep or ram.
1.116	19-Jun-2011	martin	Instead of crashing, print a usable error message when a driver eroneously does not properly initialize sensor state.
1.115	15-Jun-2011	pgoyette	Previous fix broke the setting of current value for Indicator and Battery-Charge sensors. Fix this.
1.114	08-Jun-2011	pgoyette	Factor out some duplicated code to simplify maintenance. Reduces the source file by ~100 lines, and amd64 object file shrinks by ~650 bytes. No functional change intended.
1.113	04-Jun-2011	pgoyette	Since nothing actually records or maintains an average sensor value, remove value_avg from the prop_dict. We can't completely remove it because there's one driver that uses this field for its own private purposes, so for now we just rename the member.
1.112	30-Dec-2010	pgoyette	branches: 1.112.2; 1.112.6; When the user updates the sensor device's refresh timer, reset the callout immediately rather than waiting for the previous timer to expire.
1.111	16-Dec-2010	njoly	Be sure to always initialize props variable to a sensible value. Fix a problem with envstat -S call which was installing bogus/random limits. ok pgoyette.
1.110	15-Dec-2010	pgoyette	Extract searching of description tables into a single function, rather than duplicating the code every time. Minor reduction in code size (about 1200 bytes on amd64), no change in functionality.
1.109	11-Dec-2010	pgoyette	Handle removal of limit properties correctly, even for sensors that provide their own internal limit(s).
1.108	08-Dec-2010	pgoyette	When removing properties (as in envstat -S), clear the flags that track whether the properties actually exist. When setting new limit values, don't complain/ignore about duplicate values if the associated flag bits (indicating that the limit is valid) are not set. These two fixes together should fix a problem reported in private Email by njoly@ a couple months ago. Issue replicated and solution tested using my recent swsensor pseudo-device running inside qemu world!
1.107	11-Apr-2010	pgoyette	Use a typedef to define the prototype of the per-sensor callback. Update manpage for the prototype, and fix a fubar'd Cross-reference.
1.106	10-Apr-2010	pgoyette	When removing sensor properties with envstat -S, ensure that drivers which could have modified hardware state are informed so that original state can be restored. Welcome to 5.99.27
1.105	03-Apr-2010	pgoyette	When unregistering a device, in addition to reducing the global count of sensors, we need to adjust the sme_fsensor values for some devices. Failure to do this leaves a sparesly-populated number-space and can subsequently result in overlapping sensors number assignments. (This only affects the compatability-mode API, but still needs to be fixed.)
1.104	01-Apr-2010	pgoyette	Permit creation of an event-monitor for alarm limits even if the limits are not currently set (and, in case of battery capacity sensors, if there is no value_max). Ensure that such an event-monitor does not trigger the delivery of any actual events. Provide a mechanism for sensors to set their limits at time other than system startup (for example, when a battery is inserted). This allows us to boot a system with a battery missing, install the battery some time later, and automatically monitor it without requiring any user intervention to create the event-monitor. (The actual changes for battery sensors to use this new capability will come later.)
1.103	27-Mar-2010	pgoyette	Constify the args to sysmon_envsys_foreach_sensor()'s callback function.
1.102	27-Mar-2010	pgoyette	Fix the locking protocol in sysmon_envsys_foreach_sensor(), and add an additional argument to control whether or not the sensors are refreshed before invoking the callback routine.
1.101	26-Mar-2010	pgoyette	Make this work the way the preceeding comment blocks says it works, and break out of the while{ } when the callback returns false, not when it returns true!
1.100	26-Mar-2010	pgoyette	Add a routine to iterate over all the sensors on the system. This will be needed to update acpiapm_get_powstat() which is currently slightly broken due to recent rearrangement of acpi_bat(4)'s sensors. (This approach is in lieu of exporting proplists between kernel entities, and avoids exposing some internal sysmon_envsys details.)
1.99	26-Mar-2010	pgoyette	Export the sensor device's class.
1.98	24-Mar-2010	pgoyette	Do the initial refresh before creating the event monitors, in case the event monitors require some of the data loaded by the refresh. For example, the initial refresh might load sensor limits and max_value in addition to the cur_value.
1.97	14-Mar-2010	pgoyette	branches: 1.97.2; Retire the 'monitor' member of the envsys_data_t. It was only used in one place, and functioned as a logical OR of the ENVSYS_FMON* flag bits.
1.96	15-Feb-2010	pgoyette	For symmetry, allow warning and critical upper-limits for capacity sensors.
1.95	14-Feb-2010	pgoyette	Remove the flags member of the limits structure. Its value was only meaningful for a few limited function calls; all persitent storage of limit-present flags is maintained in the edata->upropset member.
1.94	05-Feb-2010	pgoyette	branches: 1.94.2; One more callback of sme_refresh() routine needs to check first that there is a routine to be called!
1.93	31-Jan-2010	martin	Fix an outdated comment, noticed by Paul Goyette.
1.92	31-Jan-2010	martin	Add a convenience function to find the maximum value currently reported by a set (selected via a passed callback predicate) of sensors. This provides an easy way to query the current temperature of a thermal zone, for example, from within the kernel - assuming the caller knows the topology.
1.91	30-Jan-2010	pgoyette	Validate limit-based monitoring in one place, so we can apply the constraints to both driver-requested and user-requested monitoring. While here, clean up some of the debugging DPRINTFs.
1.90	10-Jul-2009	pgoyette	Remove some code (bracketed by #ifdef NOTYET / #endif) that should not have been committed in the first place.
1.89	08-Jul-2009	pgoyette	Remove driver name from debug message. Not all drivers have set this early enough, and we can easily figure out the driver name from some subsequent debug messages.
1.88	13-Jun-2009	pgoyette	Add capability to send sensor limit values to the driver so they can be programmed into device registers. This way we can let the hardware help us out instead of having to always compare the value against each limit. (Driver updates for some sensors to take advantage of this capability will be forthcoming.)
1.87	08-Jun-2009	pgoyette	General clean-up and some restructuring of event handling. This is a precursor to letting sensor drivers actually exchange limits/thresholds with user-land.
1.86	03-Jun-2009	pgoyette	Don't allocate the private list-threading structure unless we're going to use it. Otherwise we end up leaking little bits of memory for each sensor that is not monitored at time of initial registration.
1.85	22-Aug-2008	pgoyette	branches: 1.85.8; 1. provide for warning-min and warning-max alarm levels in addition to critical-min and critical-max; also, a battery warning-capacity is added in addition to a critical-capacity. 2. usr.sbin/envstat is modified to introduce a -W command line switch to display the warning-* values instead of the critical-* values, and envstat(8) and envsys.conf(5) man pages are updated appropriately. 3. Treat user-defined limits as a single continuum and generate a single event regardless of how many boundaries a change in sensor value crosses; ditto for driver-defined limits. Fixes my PR/39021 Fixes my PR/39022 OK'd by christos@ bouyer@ cube@
1.84	03-Jun-2008	jmcneill	branches: 1.84.4; Add SME_POLL_ONLY flag, which informs sme to only refresh the sensor when it is polled (and not from GTREDATA).
1.83	02-Apr-2008	xtraeme	branches: 1.83.2; 1.83.4; 1.83.6; Initialize and destroy the callout in sme_events_init() and sme_events_destroy() respectively. And don't stop twice the callout when calling sysmon_envsys_unregister().
1.82	01-Apr-2008	xtraeme	Introduce per-device locking/synchronization and maintain only a global mutex for the linked list of devices and the global proplib dictionary. This has improved locking contention a lot when multiple devices with multiple monitoring events are running: New: 0.30 35 0.33 sme_global_mtx sysmonioctl_envsys+28b 0.10 10 0.11 00000000cd97feac sysmon_envsys_acquire+4c 0.08 6 0.09 00000000cd97feac sme_update_dictionary+24f 0.01 4 0.01 00000000cd97feac sme_events_worker+2f 0.01 10 0.01 00000000cd97fe2c sysmon_envsys_acquire+4c 0.00 1 0.00 00000000cd97fe2c sysmon_envsys_release+3b 28.38 94 9.16 sme_global_mtx sysmonioctl_envsys+28b 4.54 74 1.47 00000000cd97fe2c sysmon_envsys_acquire+4c 0.06 3 0.02 00000000cd97fe2c sysmon_envsys_release+3b 0.03 1 0.01 00000000cd97fe2c sme_events_worker+2f 1.40 19 0.45 00000000cd97bee4 sysmon_envsys_acquire+4c Old: 4.25 313 4.74 sme_mtx <all> 3.12 185 3.49 sme_mtx sme_events_worker+21 1.12 128 1.25 sme_mtx sysmonioctl_envsys+29b 34.75 1423 59.52 sme_mtx <all> 22.08 477 37.82 sme_mtx sysmonioctl_envsys+29b 12.67 946 21.70 sme_mtx sme_events_worker+21
1.81	23-Mar-2008	xtraeme	Fix some problems reported by <drochner> a while ago on tech-kern: sme_events_worker: skip sensors with invalid state. sme_acadapter_check: * use a boolean to check if an SME_CLASS_ACADAPTER was found. * Always refresh sensor data before checking value_cur. Introduce the SME_INIT_REFRESH flag. If a device sets this it will mean that after interrupts are enabled in the autoconf(9) process, sensor data will be refreshed once.
1.80	02-Feb-2008	xtraeme	branches: 1.80.6; Destroy the callout via sysmon_envsys_destroy() now that it's initialized in sysmon_envsys_create().
1.79	02-Jan-2008	xtraeme	- Initialize the callout with CALLOUT_MPSAFE, like it was done before in sysmon_envsys_events.c. - Separate sme_event_check_low_power() into sme_battery_check(), sme_acadapter_check() and sme_battery_critical() (no functional changes).
1.78	02-Jan-2008	dyoung	In sysmon_envsys_create(), initialize the callout structure. Stops panics with a DIAGNOSTIC kernel. In sysmon_envsys_find_40(), wait until an envsys is not busy before settings its busy flag, in the pattern of sysmon_envsys_find().
1.77	02-Jan-2008	dyoung	Use LIST_FOREACH().
1.76	02-Jan-2008	dyoung	Use TAILQ_FOREACH().
1.75	05-Dec-2007	ad	branches: 1.75.4; MUTEX_SPIN -> MUTEX_DEFAULT.
1.74	20-Nov-2007	xtraeme	branches: 1.74.2; Update a comment.
1.73	20-Nov-2007	xtraeme	After comments from Andrew Doran: - The mutex for the callout handler must run at IPL_SOFTCLOCK. - Just stop the callout in sysmon_envsys_unregister() and don't wait for the callout to finish.
1.72	16-Nov-2007	xtraeme	Extend the envsys2 API (one more time, sorry) as defined in: http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html sysmon_envsys_create() and sysmon_envsys_destroy() were added to create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events). sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were added to attach/detach sensors to a specified sysmon_envsys device. The events framework is now per device and configurable via the ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8). Update all users and documentation to reflect these changes.
1.71	03-Nov-2007	xtraeme	branches: 1.71.2; - Rename ENVSYS_BATTERY_STATE units to ENVSYS_BATTERY_CAPACITY and introduce ENVSYS_BATTERY_CHARGE, which is the same than an Indicator and it's used to know if the battery is currently charging or discharging. - Require two sensors at least for SME_CLASS_BATTERY to make the low-power condition work: a ENVSYS_BATTERY_CAPACITY plus ENVSYS_BATTERY_CHARGE. - Simplify sme_event_check_lowpower() and make it check the required sensors in the SME_CLASS_ACADAPTER and SME_CLASS_BATTERY classes. If the acadapter is not ready, trust the state returned by the battery device. Based on suggestion from joerg@.
1.70	02-Nov-2007	plunky	do not embed acpi device names in the sensor names fake it in the compat code for the old envsys API
1.69	07-Oct-2007	xtraeme	branches: 1.69.2; New changes to support the new configuration file format for envstat(8) and the envsys framework: - Modify the ENVSYS_SETDICTIONARY ioctl to support the following plist structure: <dict> <key>foo0</key> <array> <dict> <key>index</key> <string>sensor0</string> <key>description</key> <string>cpu temp</string> ... Another property for this sensor ... </dict> ... Another dictionary for other sensor ... </array> ... Another device as above ... </dict> Multiple devices with multiple sensors can now be specified, that means that to set the properties only one copyin(9) is needed now. - Added the ENVSYS_REMOVEPROPS ioctl, that accepts a boolean object "envsys-remove-props" and when set to true, all properties that were set previously by ENVSYS_SETDICTIONARY will be removed. That means that you can now set multiple critical limits, descriptions and all they will be removed or changed to its default value (for rfact and description objects). - Added the 'index' and 'allow-rfact' objects into the sensor dictionaries, for better interactivity with userland. To know the position of the sensor and to know if sensor allows to change the rfact. - Misc cosmetic changes for consistency. - Use a two clause license for all my code.
1.68	24-Sep-2007	xtraeme	sme_add_sensor_dictionary: don't forget to release the dictionary when an error ocurrs. This is the last memleak in the code, let me know if you find more and I'll pay you a beer.
1.67	09-Sep-2007	xtraeme	branches: 1.67.2; Change the DPRINTFs in sysmon_envsys_destroy_plist() to DPRINTFOBJs (second level of verbosity).
1.66	08-Sep-2007	xtraeme	sysmon_envsys_register: don't forget to clear SME_FLAG_BUSY when registration succeeds.
1.65	08-Sep-2007	xtraeme	Use DPRINTF for a debugging printf.
1.64	08-Sep-2007	xtraeme	Remove an unused variable.
1.63	08-Sep-2007	xtraeme	Fix another memleak that only happened when using sysmon_envsys_unregister(): in sysmon_envsys_destroy_plist() I wasn't removing the _objects_ from the dictionary, instead I was calling prop_object_release() with the keysym returned by prop_object_iterator_next()... obviously this wasn't correct.
1.62	08-Sep-2007	xtraeme	Don't forget to free sme_evdrv in non error case too. Noticed and reviewed by rmind.
1.61	08-Sep-2007	xtraeme	Use only one single condvar(9) for devices and events, they are protected by the same mutex (sme_mtx) and there's no point in using two of them. Also add a comment mentioning some locking notes. Reviewed and ok by rmind.
1.60	08-Sep-2007	xtraeme	Disable debug, committed accidentally in previous.
1.59	08-Sep-2007	xtraeme	sysmon_envsys_register: only call sme_event_unregister_all when any other error than EEXIST is returned.
1.58	08-Sep-2007	xtraeme	- Use only one global mutex for all tasks with devices & events. - sysmon_envsys_register: use a SLIST to maintain allocated sme_event_drv_t structs for later use in sysmon_task_queue_sched(). This avoids a locking error acquiring/dropping the mutex multiple times. Suggested by rmind.
1.57	08-Sep-2007	xtraeme	Remove another COMPAT_40 block, found by rmind@.
1.56	08-Sep-2007	xtraeme	- Build unconditionally compatibility code, there's no point to have it disabled, because some drivers depend in the old code yet. - Use a new mutex for sysmon_envsys_next_sensor_index (used in compatibility code), otherwise bad things happen with LKMs. Thanks to this, the hack for LKMs has been removed. - Check in advance if the driver doesn't exist already on the list before adding the sensors in the dictionary. - Don't forget to call sme_event_unregister_all() if sysmon_envsys_unregister() fails after adding the array into the global dictionary or when creating sensors. - Modify and add some DPRINTFs. The lm(4) lkm works without known problems registering and unregistering it multiple times.
1.55	04-Sep-2007	xtraeme	- Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.54	02-Sep-2007	xtraeme	Add a new sensor type to sysmon_envsys(9): ENVSYS_GSTRING. ENVSYS_GSTRING (aka Generic String) uses the genstr member in the envsys_data_t struct to add a generic string that envstat(8) will show as value or state. It's like the ENVSYS_DRIVER, but doesn't use value_cur. Below is the dictionary created on these sensors: <dict> <key>description</key> <string>acpibat0 charge state</string> <key>generic-state-string</key> <string>NORMAL</string> <key>monitoring-supported</key> <false/> <key>state</key> <string>valid</string> <key>type</key> <string>Generic string</string> </dict> Note that it's limited to 32 chars, but we can grow it if needed. envstat(8) will print ENVSYS_GSTRING sensors as: $ envstat -dacpibat0 -s"acpibat0 charge state" acpibat0 charge state: NORMAL $
1.53	01-Sep-2007	xtraeme	- Fix a memleak in ENVSYS_SETDICTIONARY if there wasn't any error (thanks god for KMEMSTATS). - sysmon_envsys_register: add all objects in the dictionary without any lock, at this point the sme device hasn't been added into the list and it's safe. - Add sysmon_envsys_destroy_plist(prop_array_t) that destroys all objects associated with a device and use it on sysmon_envsys_unregister() and sysmon_envsys_register() if there's any error. Thanks to Mindaugas Rasiukevicius (rmind@) for the great comments/ideas.
1.52	31-Aug-2007	xtraeme	- sme_unregister_all: there's no need to use a struct sysmon_envsys as argument, just pass sme->sme_name to it. - sysmon_envsys_register: drop the array in all cases, not just when there's an error. The reference is stored in the dictionary anyway... - Update some comments.
1.51	31-Aug-2007	xtraeme	Merge sme_event_add() into sme_event_register()... there's no need to have two different functions for this.
1.50	31-Aug-2007	xtraeme	Add a few KASSERT(mutex_owned(&foo_lock)) as suggested by Andrew Doran.
1.49	30-Aug-2007	xtraeme	More misc changes for sysmon_envsys(9): - Add the SLIST for sensor descriptions and sme_uniqsensors into the struct sysmon_envsys (it's per device now). - Use only one common struct with three members for the static tables (there's no need to have different structs just for them). - While initializing/destroying the events framework, use the strategy specified by Andrew Doran in: http://mail-index.netbsd.org/tech-kern/2007/06/21/0025.html).
1.48	30-Aug-2007	xtraeme	Simplify sysmon_envsys_register() and fix an obvious error in previous.
1.47	30-Aug-2007	xtraeme	Some changes to improve locking on sysmon_envsys(9): - Remove sme_mtx, a global lock (sme_list_mtx) is used to access to the sysmon envsys device. - Allocate memory with KM_NOSLEEP rather than KM_SLEEP if there's a mutex held, to avoid sleeping. - Remove sysmon_envsys_createplist() and add the logic into sysmon_envsys_register(). - sysmon_envsys_register: allocate the array and dictionaries required in advance for a device before the locking and adding the objects into the array happens. - Rename sme_make_dictionary() to sme_add_sensor_dictionary() and pass to it the dictionary on which the objects will be stored for a sensor. - Improve locking here and there. Thanks to Mindaugas Rasiukevicius and Andrew Doran for comments.
1.46	05-Aug-2007	xtraeme	branches: 1.46.2; 1.46.4; In ENVSYS_SETDICTIONARY if sysmon_envsys_find() returns NULL, do not call sysmon_envsys_release with a NULL argument.
1.45	29-Jul-2007	xtraeme	branches: 1.45.4; - Do not call sme_gtredata in sysmon_envsys_createplist, as in some systems the interrupts are not configured and causes unexpected behaviour in acpi_bat and other drivers, reported by cube@. - Update the 'type' object in sme_update_dictionary(), so that it can report the correct units type in acpibat(4).
1.44	27-Jul-2007	xtraeme	Change locking stuff in sysmon_envsys_register() and sysmon_envsys_createplist().
1.43	23-Jul-2007	xtraeme	- ENVSYS_SETDICTIONARY: use sysmon_envsys_release() if there's an error. - sme_events_worker: use sme_list_mtx when accessing to the sysmon_envsys linked list. - Improve the comments in sysmon_envsysvar.h about the mutexes and condvar.
1.42	23-Jul-2007	xtraeme	- sysmon_envsys_createplist: do not return the error of sme->sme_gtredata in all cases to the caller, just continue and show a debug printf if it fails, because it's not a critical error. - Improve some debugging printfs. Fixes another part of yamt@'s PR kern/36673, that I forgot to commit yesterday.
1.41	22-Jul-2007	xtraeme	Fix the last point reported by yamt in PR kern/36673: - There must be three mandatory objects in a sensor to be valid and be enabled on its dictionary: units, state and desc. If any of these objects fails for some reason, its dictionary won't created in the array and sensor will be marked with ENVSYS_FNOTVALID in edata->flags. That means there won't never be a partial dictionary. - Mark all invalid sensors and sensors with duplicate description with ENVSYS_FNOTVALID and remove ENVSYS_FDUPDESC. The former is the generic way to say that a sensor does not obey the rules and must be not created. - sysmon_envsys_createplist: if the array does not contain any object, release the array and return the error. And with all that stuff I can go to holidays and be happy.
1.40	21-Jul-2007	xtraeme	- Do not touch sme_nsensors when sensors with duplicate description are found, rather maintain a global counter for all sensors that are unique, and use this global to get the correct index in the array. - Use prop_array_set() rather than prop_array_add() for adding dictionaries into our global array. Thanks to yamt@. - Overwrite the sensor index in the first sensor of a device, to avoid a problem with LKMs where the first sensor gets the index of all edata structures allocated in kernel. - Add missing proto for sme_register_sensorname(). All them fix another part of yamt@'s PR.
1.39	21-Jul-2007	xtraeme	Use the mutex that belongs to the specific task and do not mix them blindly. - sme_list_mtx to access to the linked lists sme_list/sme_names_list. - sme_mtx to access to the data in the sysmon envsys device.
1.38	21-Jul-2007	xtraeme	sme_update_dictionary: if there's a sensor with duplicate description, there's no need to decrease 'i' again, just sme->sme_nsensors is enough. Reported by yamt@.
1.37	21-Jul-2007	xtraeme	Simplify previous.
1.36	21-Jul-2007	xtraeme	Skip sensor with duplicate descriptions in the COMPAT_40 case, verified with envstat(8) from netbsd-4 and sys/lkm/misc/envsys2. Fixes another part of kern/36673 by yamt@.
1.35	21-Jul-2007	xtraeme	- Add sme_events_destroy() to stop/destroy the callout and workqueue if there are no more events. - Add sme_event_unregister_all() to remove all events associated with a device and use it in sysmon_envsys_unregister() to fix a "use-after-free". - Check return error of sme_sensor_upfoo() in sme_make_dictionary() and return it rather than 0 all the time. - Add more KASSERTS.
1.34	21-Jul-2007	xtraeme	Some fixes for kern/36673 by yamt@: - sme_register_sensorname: there's no need to handle empty list case. - 'obj' argument in sme_sensor_upstring and similar functions is useless: removed the obj argument from the functions, it's handled in the function itself now. - check for more errors in sme_make_dictionary() and sysmon_envsys_createplist().
1.33	21-Jul-2007	xtraeme	Re-add a strlcpy() to copy the new description in edata->desc, if the object in dictionary was updated succesfully.
1.32	20-Jul-2007	xtraeme	Add another missing break if updating the drive-state object fails.
1.31	20-Jul-2007	xtraeme	Add a missing break if error when setting a new description.
1.30	20-Jul-2007	xtraeme	Replace the macros to create/update objects in dictionary with three inline functions, suggested by yamt@. This also gets rid of a few gotos.
1.29	19-Jul-2007	xtraeme	sysmon_envsys_unregister: do not kmem_free(9) with the mutex held.
1.28	19-Jul-2007	xtraeme	sme_register_sensorname: don't forget to kmem_free(9) before returning EEXIST.
1.27	19-Jul-2007	xtraeme	Maintain a SLIST per device to check for unique descriptions and do not create any dictionary if it's duplicated. Only the first sensor that has a unique description will be added. Remove all elements from the list at sysmon_envsys_unregister() time and free resources associated with it.
1.26	18-Jul-2007	xtraeme	- More changes related to locking. - Add a condvar(9) to protect deletions on the list if there's an event in the worker thread.
1.25	18-Jul-2007	xtraeme	sme_make_dictionary: if prop_array_add() fails, don't forget to release the dictionary. Pointed out by yamt@.
1.24	17-Jul-2007	xtraeme	branches: 1.24.2; Add more debugging printfs to catch sensors with duplicate description, and some cosmetic ones.
1.23	17-Jul-2007	xtraeme	Skip sensors with the same description on the same device at attach time, if the description of it is not unique, mark the sensor with ENVSYS_FDUPDESC, return EEXIST and continue. Also, when changing a description, check that the new description is not assigned by any other sensor, otherwise return EEXIST. Note that these restrictions are only per device. Fixes PR kern/36660.
1.22	17-Jul-2007	xtraeme	Only allow to use ENVSYS_SETDICTIONARY if the user has write permission in the /dev/sysmon device. Use O_RDONLY for ENVSYS_GETDICTIONARY and O_RDWR for ENVSYS_SETDICTIONARY in envstat(8). Fixes PR kern/36661 by YAMAMOTO Takashi.
1.21	16-Jul-2007	xtraeme	There's no reason why integer sensors were disabled for monitoring, so enable it. This will allow to set a min/max limit for the macppc/battery.c driver, which uses an integer sensor to report the battery capacity. Indicator/Integer sensors will share the /etc/power/scripts/sensor_indicator script to report the events.
1.20	04-Jul-2007	xtraeme	Fix the old ENVSYS_GTREDATA ioctl if there are sensors with invalid state. Enable all sensors by default as valid and current valid data and if there is one that is in invalid state, mark current data as not valid. This matches the behaviour with the old API. Also, this fixes the problem with ipmi(4) reporting bogus values with sensors in invalid state using the old envstat(8). Note that this only happened when using the old envstat(8).
1.19	02-Jul-2007	xtraeme	Add PENVSYS_TYPE_INDICATOR to handle events on Indicator sensors. ipmi(4) uses this for the Intrussion and Power Supply sensors.
1.18	01-Jul-2007	xtraeme	Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.17	04-Mar-2007	christos	branches: 1.17.2; 1.17.4; Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
1.16	19-Feb-2007	ad	Back out previous for now. There isn't currently an easy way to set up shared state before these get attached or used. From xtraeme@.
1.15	19-Feb-2007	xtraeme	Replace SYSMON_ENVSYS_{LOCK,UNLOCK} with mutex_{enter,exit}.
1.14	18-Feb-2007	xtraeme	* Replace simple_locks and exclusive locks with adaptive mutexes. * Replace ltsleep/wakeup pairs with condition variables (cv_init/cv_wait/cv_broadcast). Reviewed by ad@.
1.13	16-Nov-2006	christos	branches: 1.13.4; __unused removal on arguments; approved by core.
1.12	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.11	08-Jul-2006	christos	branches: 1.11.4; 1.11.6; expose the ioctl internal function now used by the acpi_apm code.
1.10	20-Mar-2006	lukem	branches: 1.10.4; Don't attempt to call (sme->sme_gtredata)() or (sme->sme_streinfo)() if those members are NULL. As discussed on tech-kern in October/November 2005.
1.9	11-Dec-2005	christos	branches: 1.9.4; 1.9.6; 1.9.8; 1.9.10; 1.9.12; merge ktrace-lwp.
1.8	11-Aug-2003	yamt	branches: 1.8.16; do wakeup() only when someone is waiting for us.
1.7	11-Aug-2003	yamt	introduce SME_FLAG_BUSY and set it during operations instead of keeping sysmon_envsys_list_slock spinlock held because some drivers might sleep in sysmon_envsys ops, XXX sysmon_envsys_lock is now redundant
1.6	29-Jun-2003	fvdl	branches: 1.6.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.5	28-Jun-2003	darrenr	Pass lwp pointers throughtout the kernel, as required, so that the lwpid can be inserted into ktrace records. The general change has been to replace "struct proc " with "struct lwp " in various function prototypes, pass the lwp through and use l_proc to get the process pointer when needed. Bump the kernel rev up to 1.6V
1.4	31-Dec-2002	explorer	add envsys support to acpi A/C adapter and batteries. This is still a work in progress, much like the rest of ACPI.
1.3	03-Jan-2002	jdolecek	The device close routine is called when _last_ descriptor to the device file is closed, rather on every descriptor close. Instead of getting the exclusive lock on open and releasing on close, get the lock only when needed in sysmonioctl_envsys(). Fixes kern/14368 by Anthony Mallet. Okayed by Jason Thorpe. While here, also inline sysmon_envsys_init() to sysmonopen_envsys(), and g/c sysmonioctl_wdog() prototype.
1.2	13-Nov-2001	lukem	add RCSIDs
1.1	05-Nov-2000	thorpej	branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; Split the envsys and watchdog parts of sysmon into their own files.
1.1.8.1	18-Sep-2001	fvdl	Various changes to make cloning devices possible: * Add an extra argument (struct vnode *) to VOP_OPEN. If it is not NULL, specfs will create a cloned (aliased) vnode during the call, and return it there. The caller should release and unlock the original vnode if a new vnode was returned. The new vnode is returned locked. Add a flag field to the cdevsw and bdevsw structures. DF_CLONING indicates that it wants a new vnode for each open (XXX is there a better way? devprop?) * If a device is cloning, always call the close entry point for a VOP_CLOSE. Also, rewrite cons.c to do the right thing with vnodes. Use VOPs rather then direct device entry calls. Suggested by mycroft@ Light to moderate testing done an i386 system (arch doesn't matter though, these are MI changes).
1.1.6.1	10-Jan-2002	thorpej	Sync kqueue branch with -current.
1.1.4.4	03-Jan-2003	thorpej	Sync with HEAD.
1.1.4.3	28-Feb-2002	nathanw	Catch up to -current.
1.1.4.2	11-Jan-2002	nathanw	More catchup.
1.1.4.1	14-Nov-2001	nathanw	Catch up to -current.
1.1.2.2	22-Nov-2000	bouyer	Sync with HEAD.
1.1.2.1	05-Nov-2000	bouyer	file sysmon_envsys.c was added on branch thorpej_scsipi on 2000-11-22 16:04:54 +0000
1.6.2.4	21-Sep-2004	skrll	Fix the sync with head I botched.
1.6.2.3	18-Sep-2004	skrll	Sync with HEAD.
1.6.2.2	03-Aug-2004	skrll	Sync with HEAD
1.6.2.1	02-Jul-2003	darrenr	Apply the aborted ktrace-lwp changes to a specific branch. This is just for others to review, I'm concerned that patch fuziness may have resulted in some errant code being generated but I'll look at that later by comparing the diff from the base to the branch with the file I attempt to apply to it. This will, at the very least, put the changes in a better context for others to review them and attempt to tinker with removing passing of 'struct lwp' through the kernel.
1.8.16.9	24-Mar-2008	yamt	sync with head.
1.8.16.8	04-Feb-2008	yamt	sync with head.
1.8.16.7	21-Jan-2008	yamt	sync with head
1.8.16.6	07-Dec-2007	yamt	sync with head
1.8.16.5	15-Nov-2007	yamt	sync with head.
1.8.16.4	27-Oct-2007	yamt	sync with head.
1.8.16.3	03-Sep-2007	yamt	sync with head.
1.8.16.2	30-Dec-2006	yamt	sync with head.
1.8.16.1	21-Jun-2006	yamt	sync with head.
1.9.12.1	28-Mar-2006	tron	Merge 2006-03-28 NetBSD-current into the "peter-altq" branch.
1.9.10.1	19-Apr-2006	elad	sync with head.
1.9.8.2	11-Aug-2006	yamt	sync with head
1.9.8.1	01-Apr-2006	yamt	sync with head.
1.9.6.1	22-Apr-2006	simonb	Sync with head.
1.9.4.1	09-Sep-2006	rpaulo	sync with head
1.10.4.1	13-Jul-2006	gdamore	Merge from HEAD.
1.11.6.2	10-Dec-2006	yamt	sync with head.
1.11.6.1	22-Oct-2006	yamt	sync with head
1.11.4.1	18-Nov-2006	ad	Sync with head.
1.13.4.1	12-Mar-2007	rmind	Sync with HEAD.
1.17.4.1	11-Jul-2007	mjf	Sync with head.
1.17.2.4	09-Oct-2007	ad	Sync with head.
1.17.2.3	20-Aug-2007	ad	Sync with HEAD.
1.17.2.2	15-Jul-2007	ad	Sync with head.
1.17.2.1	15-Jul-2007	ad	Sync with head.
1.24.2.3	10-Sep-2007	skrll	Sync with HEAD.
1.24.2.2	03-Sep-2007	skrll	Sync with HEAD.
1.24.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.45.4.7	09-Dec-2007	jmcneill	Sync with HEAD.
1.45.4.6	21-Nov-2007	joerg	Sync with HEAD.
1.45.4.5	04-Nov-2007	jmcneill	Sync with HEAD.
1.45.4.4	07-Oct-2007	joerg	Sync with HEAD.
1.45.4.3	02-Oct-2007	joerg	Sync with HEAD.
1.45.4.2	03-Sep-2007	jmcneill	Sync with HEAD.
1.45.4.1	09-Aug-2007	jmcneill	Sync with HEAD.
1.46.4.2	05-Aug-2007	xtraeme	In ENVSYS_SETDICTIONARY if sysmon_envsys_find() returns NULL, do not call sysmon_envsys_release with a NULL argument.
1.46.4.1	05-Aug-2007	xtraeme	file sysmon_envsys.c was added on branch matt-mips64 on 2007-08-05 23:16:26 +0000
1.46.2.3	23-Mar-2008	matt	sync with HEAD
1.46.2.2	09-Jan-2008	matt	sync with HEAD
1.46.2.1	06-Nov-2007	matt	sync with HEAD
1.67.2.2	14-Oct-2007	yamt	sync with head.
1.67.2.1	06-Oct-2007	yamt	sync with head.
1.69.2.3	21-Nov-2007	bouyer	Sync with HEAD
1.69.2.2	18-Nov-2007	bouyer	Sync with HEAD
1.69.2.1	13-Nov-2007	bouyer	Sync with HEAD
1.71.2.3	18-Feb-2008	mjf	Sync with HEAD.
1.71.2.2	08-Dec-2007	mjf	Sync with HEAD.
1.71.2.1	19-Nov-2007	mjf	Sync with HEAD.
1.74.2.1	08-Dec-2007	ad	Sync with head.
1.75.4.1	02-Jan-2008	bouyer	Sync with HEAD
1.80.6.3	28-Sep-2008	mjf	Sync with HEAD.
1.80.6.2	05-Jun-2008	mjf	Sync with HEAD. Also fix build.
1.80.6.1	03-Apr-2008	mjf	Sync with HEAD.
1.83.6.2	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.83.6.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.83.4.5	11-Aug-2010	yamt	sync with head.
1.83.4.4	11-Mar-2010	yamt	sync with head
1.83.4.3	18-Jul-2009	yamt	sync with head.
1.83.4.2	20-Jun-2009	yamt	sync with head
1.83.4.1	04-May-2009	yamt	sync with head.
1.83.2.1	04-Jun-2008	yamt	sync with head
1.84.4.1	19-Oct-2008	haad	Sync with HEAD.
1.85.8.1	23-Jul-2009	jym	Sync with HEAD.
1.94.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.97.2.3	12-Jun-2011	rmind	sync with head
1.97.2.2	05-Mar-2011	rmind	sync with head
1.97.2.1	30-May-2010	rmind	sync with head
1.112.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.112.2.1	06-Jun-2011	jruoho	Sync with HEAD.
1.117.8.2	19-Oct-2012	riz	Remove stray CR characters introduced in ticket #544. From pgoyette.
1.117.8.1	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #544): sys/dev/sysmon/sysmon_envsysvar.h: revision 1.42 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.99 sys/dev/sysmon/sysmon_envsys.c: revision 1.119 When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.117.6.1	18-Feb-2012	mrg	merge to -current.
1.117.2.3	16-Jan-2013	yamt	sync with (a bit old) head
1.117.2.2	30-Oct-2012	yamt	sync with head
1.117.2.1	17-Apr-2012	yamt	sync with head
1.125.2.3	03-Dec-2017	jdolecek	update from HEAD
1.125.2.2	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.125.2.1	25-Feb-2013	tls	resync with head
1.126.10.1	07-Apr-2014	tls	Be a little more clear and consistent about harvesting entropy from devices: 1) deprecate RND_FLAG_NO_ESTIMATE 2) define RND_FLAG_COLLECT_TIME, RND_FLAG_COLLECT_VALUE 3) define RND_FLAG_ESTIMATE_TIME, RND_FLAG_ESTIMATE_VALUE 4) define RND_FLAG_DEFAULT: RND_FLAG_COLLECT_TIME\| RND_FLAG_COLLECT_VALUE\|RND_FLAG_ESTIMATE_TIME 5) Make entropy harvesting from environmental sensors a little more generic and remove it from individual sensor drivers. 6) Remove individual open-coded delta-estimators for values from a few places in the tree (uvm, environmental drivers). 7) 0 -> RND_FLAG_DEFAULT, actually gather entropy from various drivers that had stubbed out code, other minor cleanups.
1.127.2.4	07-Jun-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #1733): sys/dev/sysmon/sysmon_envsys.c: revision 1.145 Don't queue sysmon refresh until the rndsource is attached. Using the rndsource, as refreshing the sensors will do, is not allowed until _after_ rnd_source_attach. XXX pullup-7 XXX pullup-8 XXX pullup-9
1.127.2.3	24-Oct-2017	snj	Fix fallout from ticket #1511: It's rnd_detach_source, not rnd_detach_sources.
1.127.2.2	23-Oct-2017	snj	Apply patch (requested by pgoyette in ticket #1511): Detach the rndsrc before re-attaching it.
1.127.2.1	06-Apr-2015	snj	branches: 1.127.2.1.2; 1.127.2.1.6; Pull up following revision(s) (requested by hannken in ticket #666): sys/dev/sysmon/sysmon_envsys.c: revision 1.129 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.114 sys/dev/sysmon/sysmonvar.h: revision 1.46 Add a counter of busy events and stop enqueueing more work if a device = is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.127.2.1.6.2	24-Oct-2017	snj	Fix fallout from ticket #1511: It's rnd_detach_source, not rnd_detach_sources.
1.127.2.1.6.1	23-Oct-2017	snj	Apply patch (requested by pgoyette in ticket #1511): Detach the rndsrc before re-attaching it.
1.127.2.1.2.2	24-Oct-2017	snj	Fix fallout from ticket #1511: It's rnd_detach_source, not rnd_detach_sources.
1.127.2.1.2.1	23-Oct-2017	snj	Apply patch (requested by pgoyette in ticket #1511): Detach the rndsrc before re-attaching it.
1.128.2.3	27-Dec-2015	skrll	Sync with HEAD (as of 26th Dec)
1.128.2.2	06-Jun-2015	skrll	Sync with HEAD
1.128.2.1	06-Apr-2015	skrll	Sync with HEAD
1.139.10.2	07-Jun-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #1555): sys/dev/sysmon/sysmon_envsys.c: revision 1.145 Don't queue sysmon refresh until the rndsource is attached. Using the rndsource, as refreshing the sensors will do, is not allowed until _after_ rnd_source_attach. XXX pullup-7 XXX pullup-8 XXX pullup-9
1.139.10.1	23-Sep-2017	snj	Pull up following revision(s) (requested by pgoyette in ticket #281): sys/dev/sysmon/sysmon_envsys.c: 1.140-1.141 sys/dev/sysmon/sysmon_envsys_events.c: 1.120-1.121 sys/dev/sysmon/sysmonvar.h: 1.50 Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d". Don't call rnd_detach_source() in sme_remove_event() which is called from sme_event_unregister_all(). Instead, call rnd_detach_source() in sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach() before sme_event_unregister_sensor(). Each sensor(envsys_data) has each rnd_src, but some sme_events point to the same rnd_src in a sensor. Calling rnd_detach_souce() twice with the same rnd_src brokes a reference count in rnd_src. OK'd by pgoyette@. -- Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533
1.141.2.2	25-Jun-2018	pgoyette	Sync with HEAD
1.141.2.1	21-May-2018	pgoyette	Sync with HEAD
1.143.2.1	10-Jun-2019	christos	Sync with HEAD
1.144.4.1	07-Jun-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #946): sys/dev/sysmon/sysmon_envsys.c: revision 1.145 Don't queue sysmon refresh until the rndsource is attached. Using the rndsource, as refreshing the sensors will do, is not allowed until _after_ rnd_source_attach. XXX pullup-7 XXX pullup-8 XXX pullup-9
1.123	31-Dec-2021	riastradh	sysmon(9): Fix callout/thread synchronization. Callout may ONLY take sme_work_mtx, at IPL_SOFTCLOCK; MUST NOT touch sme_mtx at IPL_NONE. All state the callout needs is serialized by sme_work_mtx now: - calls to sme_schedule_callout - calls to sme_schedule_halt - struct sysmon_envsys::sme_events_timeout - struct sysmon_envsys::sme_events_list - struct sysmon_envsys::sme_callout_state - struct envsys_data::flags => yes, this is a little silly -- used for ENVSYS_FNEED_REFRESH => should maybe separate the static driver-defined features from the state flags needed by sysmon_envsys but not important now Sleeping under sme_work_mtx (except on other adaptive locks at IPL_SOFTCLOCK) is forbidden. Calling out to the driver under sme_work_mtx is forbidden. This should properly fix: https://mail-index.netbsd.org/tech-kern/2015/10/14/msg019511.html PR kern/56592
1.122	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.121	11-Sep-2017	pgoyette	Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533 XXX Pullup-8 along with the previous fixes from msaitoh@ XXX http://mail-index.netbsd.org/source-changes/2017/09/06/msg088028.html ~ ~
1.120	06-Sep-2017	msaitoh	Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d". Don't call rnd_detach_source() in sme_remove_event() which is called from sme_event_unregister_all(). Instead, call rnd_detach_source() in sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach() before sme_event_unregister_sensor(). Each sensor(envsys_data) has each rnd_src, but some sme_events point to the same rnd_src in a sensor. Calling rnd_detach_souce() twice with the same rnd_src brokes a reference count in rnd_src. OK'd by pgoyette@.
1.119	01-Jun-2017	chs	branches: 1.119.2; remove checks for failure after memory allocation calls that cannot fail: kmem_alloc() with KM_SLEEP kmem_zalloc() with KM_SLEEP percpu_alloc() pserialize_create() psref_class_create() all of these paths include an assertion that the allocation has not failed, so callers should not assert that again.
1.118	15-Oct-2015	bouyer	As proposed in https://mail-index.netbsd.org/tech-kern/2015/10/14/msg019511.html don't sleep on sme->sme_mtx in the callout but use mutex_tryenter() and just reschedule the callout if we can't get the mutex now. This fixes a deadlock which can happen if the backed wants to sleep with timeout (e.g. cv_timedwait()) as the backed is called with sme->sme_mtx held. This is a stopgap measure for netbsd-7; sysmon should be changed to not sleep (or call a backend which will sleep) with mutexes held.
1.117	23-Jun-2015	pgoyette	Separate the two conditions for the KASSERT, so we can tell which one occurred.
1.116	23-Jun-2015	pgoyette	Fix the KASSERT - we want to make sure that _both_ pointers are non-NULL, n ot just that one or the other is non-NULL!
1.115	18-Apr-2015	mlelstv	use unsigned type for flag bits.
1.114	14-Mar-2015	hannken	Add a counter of busy events and stop enqueueing more work if a device is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.113	23-Nov-2014	ozaki-r	branches: 1.113.2; Pull workqueue_destroy out of sme->sme_mtx workqueue_destroy may sleep so we shouldn't run it with holding a mutex. Requested by riastradh@.
1.112	22-Nov-2014	ozaki-r	Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. In this case, we need to pass an interlock to callout_halt to wait for the callout complete. And also we make sure that SME_CALLOUT_INITIALIZED is unset before calling callout_halt to prevent the callout from calling callout_schedule. This is the same as what we did in sys/netinet6/mld6.c@1.61. Reviewed by riastradh@.
1.111	22-Nov-2014	ozaki-r	Kill sme_callout_mtx and use sme_mtx instead We can use sme_mtx for the callout as well. Actually we should do so because sme_events_list and some other data that are touched in the callout should be protected by sme_mtx, not sme_callout_mtx. Discussed with riastradh@ in http://mail-index.netbsd.org/tech-kern/2014/11/11/msg017956.html
1.110	15-Sep-2013	martin	branches: 1.110.4; Remove unused variable
1.109	23-Jan-2013	mbalmer	branches: 1.109.2; Fix spelling, grammar, typos.
1.108	14-Dec-2012	pgoyette	Constify
1.107	11-Dec-2012	pgoyette	Replace a couple of many-line #define with equivalent code loops. No functional change intended, and atf tests (using swsensor(4)) still pass 100%
1.106	31-Oct-2012	macallan	in sme_battery_check(): - don't assume that all batteries have exactly one ENVSYS_INDICATOR - check capacity and charge sensors for ENVSYS_SVALID before using them now this works on macppc
1.105	06-Sep-2012	pgoyette	branches: 1.105.2; Remove (commented-out) definitions for debugging - thanks to macallan@ for defflagging these.
1.104	27-Aug-2012	pgoyette	1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling.
1.103	19-Jul-2012	pgoyette	If previously there was only a dummy event entry (to force refresh for entropy gathering), allow it to be updated for the current request to add a real entry.
1.102	18-Jul-2012	pgoyette	Release the mutex before taking a quick exit.
1.101	16-Jul-2012	pgoyette	Extend previous changes so that even sensors which don't use a refresh() callback to update the value can be polled to provide rnd(4) entropy.
1.100	15-Jul-2012	pgoyette	If a sensor is flagged as capable of providing rnd(4) with entropy, hook the sensor into rnd subsystem, and make sure we periodically refresh the sensor whether or not it is being actively monitored.
1.99	15-Jul-2012	pgoyette	When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.98	08-Jun-2011	pgoyette	branches: 1.98.2; 1.98.8; Restrict limit monitoring for Indicator sensors as well as for Battery-charge sensors.
1.97	30-Dec-2010	pgoyette	branches: 1.97.6; When the user updates the sensor device's refresh timer, reset the callout immediately rather than waiting for the previous timer to expire.
1.96	15-Dec-2010	pgoyette	Extract searching of description tables into a single function, rather than duplicating the code every time. Minor reduction in code size (about 1200 bytes on amd64), no change in functionality.
1.95	08-Dec-2010	pgoyette	When removing properties (as in envstat -S), clear the flags that track whether the properties actually exist. When setting new limit values, don't complain/ignore about duplicate values if the associated flag bits (indicating that the limit is valid) are not set. These two fixes together should fix a problem reported in private Email by njoly@ a couple months ago. Issue replicated and solution tested using my recent swsensor pseudo-device running inside qemu world!
1.94	06-Dec-2010	pgoyette	Make this compile when "options ENVSYS_OBJECTS_DEBUG" is defined.
1.93	22-Sep-2010	pgoyette	1. Don't try to call the driver's get_limits routine if it doesn't have one. Fixes a panic reported by njoly@ in private Email 2. Acquire the device before checking whether or not the get_limits routine exists. XXX There's still a bug in here somewhere that prevents setting of XXX limit values after using 'envstat -S'
1.92	10-Apr-2010	pgoyette	When removing sensor properties with envstat -S, ensure that drivers which could have modified hardware state are informed so that original state can be restored. Welcome to 5.99.27
1.91	01-Apr-2010	pgoyette	Permit creation of an event-monitor for alarm limits even if the limits are not currently set (and, in case of battery capacity sensors, if there is no value_max). Ensure that such an event-monitor does not trigger the delivery of any actual events. Provide a mechanism for sensors to set their limits at time other than system startup (for example, when a battery is inserted). This allows us to boot a system with a battery missing, install the battery some time later, and automatically monitor it without requiring any user intervention to create the event-monitor. (The actual changes for battery sensors to use this new capability will come later.)
1.90	24-Mar-2010	njoly	Fix ENVSYS_DEBUG build.
1.89	24-Mar-2010	pgoyette	In sysmon_envsys_sensor_event(), permit delivery of all events for the sensor if no event type is specified.
1.88	23-Mar-2010	pgoyette	Additional info in DPRINTF to help debugging efforts
1.87	19-Mar-2010	pgoyette	Modify previous commit. The routine to deliver events is intended to be exported to device drivers, so rename it and move the declaration to <dev/sysmon/sysmonvar.h>
1.86	19-Mar-2010	pgoyette	Separate event delivery from polling and limit evaluation in sme_events_worker(). Provide a wrapper that can be called from sensor drivers' interrupt routines to find and deliver a specific event. XXX Actually updating sensor drivers (and their parent devices) to XXX have interrupts is a future enhancement. This is simply an XXX enabler.
1.85	18-Feb-2010	pgoyette	branches: 1.85.2; If we're going to valdate things, at least do it correctly.
1.84	15-Feb-2010	pgoyette	For symmetry, allow warning and critical upper-limits for capacity sensors.
1.83	14-Feb-2010	pgoyette	Replace large amount of replicated code with a macro to improve readability.
1.82	14-Feb-2010	pgoyette	Remove the flags member of the limits structure. Its value was only meaningful for a few limited function calls; all persitent storage of limit-present flags is maintained in the edata->upropset member.
1.81	14-Feb-2010	pgoyette	Correct one more instance of checking flags in the wrong place.
1.80	13-Feb-2010	pgoyette	When checking current sensor value vs limits, check the correct set of flags to determine which limits are present.
1.79	05-Feb-2010	jruoho	branches: 1.79.2; Fix a typo in one DPRINTF (s/edata->des/edata->desc/).
1.78	04-Feb-2010	pgoyette	If the AC adapter is flagged with SME_DISABLE_REFRESH, don't try to call its refresh() callback. Just assume that its value has been properly updated by other means.
1.77	30-Jan-2010	pgoyette	Validate limit-based monitoring in one place, so we can apply the constraints to both driver-requested and user-requested monitoring. While here, clean up some of the debugging DPRINTFs.
1.76	26-Jan-2010	pgoyette	Move the limits out of the event structure and into the main sensor. Use the limits_flags only for calls to the {get,set}_limits() callbacks and merge the results into upropset, rather than trying to maintain both values (error prone).
1.75	18-Jan-2010	pgoyette	If no limits are exceeded, make sure we set state to SVALID
1.74	02-Jan-2010	pgoyette	Flags for existence of limit values need to be propagated to the event data. Otherwise, they're not processed. XXX This needs to be rethought. While fixing it this way makes things XXX "work", we really shouldn't need to replicate these flags. The XXX limits and their flags should be kept as part of the sensor data, XXX and not part of the event-monitor data. I'll work on this in the XXX near future.
1.73	01-Jan-2010	pgoyette	Don't infer a sensor driver's ability to handle limit checking itself.
1.72	23-Dec-2009	pgoyette	Check for value exceeding crit-max limit before checking against warn-max limit. Otherwise we'll never notice if we exceed crit-max (assuming that crit-max is at least as large as warn-max).
1.71	10-Jul-2009	pgoyette	Document usage of PROP_DRIVER_LIMITS flag and set it correctly. Use flag bits to determine validity of limit values, rather than assuming that invalid/not-present values are set to zero.
1.70	08-Jul-2009	pgoyette	Initialize lims.sel_flags before using it. Prevents spurious limit events being created for devices that don't provide internal limits. Thanks to Mattias for finding this.
1.69	08-Jul-2009	pgoyette	Clean up a couple of debug statements that got missed previously.
1.68	14-Jun-2009	pgoyette	Ooops - {get,set}_limits() need to be sensor-specific. Pass an extra argument to them to identify the individual sensor being processed.
1.67	13-Jun-2009	pgoyette	Add capability to send sensor limit values to the driver so they can be programmed into device registers. This way we can let the hardware help us out instead of having to always compare the value against each limit. (Driver updates for some sensors to take advantage of this capability will be forthcoming.)
1.66	08-Jun-2009	pgoyette	Correct typo in last so we can #undef the correct macro.
1.65	08-Jun-2009	pgoyette	General clean-up and some restructuring of event handling. This is a precursor to letting sensor drivers actually exchange limits/thresholds with user-land.
1.64	01-Jun-2009	pgoyette	Since we no longer have individual events for each sensor value limit, we don't need individual flag bits. Clean up extra bit definitions. Bump kernel version - welcome to 5.99.13
1.63	07-Apr-2009	dyoung	Fix spelling: mak -> make.
1.62	11-Nov-2008	pgoyette	branches: 1.62.4; Fix typo in previous, and wrap a panic with #ifdef DIAGNOSTIC
1.61	11-Nov-2008	pgoyette	Initialize event's "previous sent state" based on the event monitor type, regardless of sensor type. Fixes spurious "device: normal state on 'sensor-name' messages (reported by ad@) which interfere with sysinst.
1.60	04-Nov-2008	pgoyette	Fix cut&paste error in prev
1.59	04-Nov-2008	pgoyette	Restore previous behavior concerning CRITICAL events. Send an event whenever state enters or exits CRITICAL, or whenever value of sensor changes while the state is CRITICAL.
1.58	07-Sep-2008	pgoyette	branches: 1.58.2; 1.58.4; Only report new sensor state values if the new value is valid for the particular event being monitored. This avoids duplicate reporting for sensors that monitor both a normal/critical state and value-within-limits state as reported by Simon Burge on current-users. While we're here, clean-up some stair-stepping if's. OK garbled@
1.57	04-Sep-2008	pgoyette	Initialize event's sent-state appropriately to avoid unnecessary start-up time messages that report a "transition" to the Normal state.
1.56	22-Aug-2008	pgoyette	1. provide for warning-min and warning-max alarm levels in addition to critical-min and critical-max; also, a battery warning-capacity is added in addition to a critical-capacity. 2. usr.sbin/envstat is modified to introduce a -W command line switch to display the warning-* values instead of the critical-* values, and envstat(8) and envsys.conf(5) man pages are updated appropriately. 3. Treat user-defined limits as a single continuum and generate a single event regardless of how many boundaries a change in sensor value crosses; ditto for driver-defined limits. Fixes my PR/39021 Fixes my PR/39022 OK'd by christos@ bouyer@ cube@
1.55	11-Jun-2008	drochner	branches: 1.55.2; in sme_battery_check(), explicitely check whether the battery is present before using the values read, and clean up the logics a bit to make it more understandable
1.54	02-Apr-2008	xtraeme	branches: 1.54.2; 1.54.4; 1.54.6; 1.54.8; Initialize and destroy the callout in sme_events_init() and sme_events_destroy() respectively. And don't stop twice the callout when calling sysmon_envsys_unregister().
1.53	01-Apr-2008	xtraeme	Also fix a memleak when the event is already in dictionary and has been updated.
1.52	01-Apr-2008	rmind	sme_event_register: fix a memory leaks in two error paths.
1.51	01-Apr-2008	xtraeme	Introduce per-device locking/synchronization and maintain only a global mutex for the linked list of devices and the global proplib dictionary. This has improved locking contention a lot when multiple devices with multiple monitoring events are running: New: 0.30 35 0.33 sme_global_mtx sysmonioctl_envsys+28b 0.10 10 0.11 00000000cd97feac sysmon_envsys_acquire+4c 0.08 6 0.09 00000000cd97feac sme_update_dictionary+24f 0.01 4 0.01 00000000cd97feac sme_events_worker+2f 0.01 10 0.01 00000000cd97fe2c sysmon_envsys_acquire+4c 0.00 1 0.00 00000000cd97fe2c sysmon_envsys_release+3b 28.38 94 9.16 sme_global_mtx sysmonioctl_envsys+28b 4.54 74 1.47 00000000cd97fe2c sysmon_envsys_acquire+4c 0.06 3 0.02 00000000cd97fe2c sysmon_envsys_release+3b 0.03 1 0.01 00000000cd97fe2c sme_events_worker+2f 1.40 19 0.45 00000000cd97bee4 sysmon_envsys_acquire+4c Old: 4.25 313 4.74 sme_mtx <all> 3.12 185 3.49 sme_mtx sme_events_worker+21 1.12 128 1.25 sme_mtx sysmonioctl_envsys+29b 34.75 1423 59.52 sme_mtx <all> 22.08 477 37.82 sme_mtx sysmonioctl_envsys+29b 12.67 946 21.70 sme_mtx sme_events_worker+21
1.50	23-Mar-2008	xtraeme	Fix some problems reported by <drochner> a while ago on tech-kern: sme_events_worker: skip sensors with invalid state. sme_acadapter_check: * use a boolean to check if an SME_CLASS_ACADAPTER was found. * Always refresh sensor data before checking value_cur. Introduce the SME_INIT_REFRESH flag. If a device sets this it will mean that after interrupts are enabled in the autoconf(9) process, sensor data will be refreshed once.
1.49	29-Feb-2008	xtraeme	Only check sysmon_low_power if the event comes from ENVSYS_BATTERY_CAPACITY sensors.
1.48	02-Feb-2008	xtraeme	branches: 1.48.2; 1.48.6; Destroy the callout via sysmon_envsys_destroy() now that it's initialized in sysmon_envsys_create().
1.47	02-Jan-2008	xtraeme	- Initialize the callout with CALLOUT_MPSAFE, like it was done before in sysmon_envsys_events.c. - Separate sme_event_check_low_power() into sme_battery_check(), sme_acadapter_check() and sme_battery_critical() (no functional changes).
1.46	20-Nov-2007	xtraeme	branches: 1.46.6; After comments from Andrew Doran: - The mutex for the callout handler must run at IPL_SOFTCLOCK. - Just stop the callout in sysmon_envsys_unregister() and don't wait for the callout to finish.
1.45	16-Nov-2007	xtraeme	Extend the envsys2 API (one more time, sorry) as defined in: http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html sysmon_envsys_create() and sysmon_envsys_destroy() were added to create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events). sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were added to attach/detach sensors to a specified sysmon_envsys device. The events framework is now per device and configurable via the ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8). Update all users and documentation to reflect these changes.
1.44	03-Nov-2007	xtraeme	branches: 1.44.2; - Rename ENVSYS_BATTERY_STATE units to ENVSYS_BATTERY_CAPACITY and introduce ENVSYS_BATTERY_CHARGE, which is the same than an Indicator and it's used to know if the battery is currently charging or discharging. - Require two sensors at least for SME_CLASS_BATTERY to make the low-power condition work: a ENVSYS_BATTERY_CAPACITY plus ENVSYS_BATTERY_CHARGE. - Simplify sme_event_check_lowpower() and make it check the required sensors in the SME_CLASS_ACADAPTER and SME_CLASS_BATTERY classes. If the acadapter is not ready, trust the state returned by the battery device. Based on suggestion from joerg@.
1.43	23-Oct-2007	xtraeme	Use a flag for see_flags to know when the sensor has been refreshed rather than using a boolean. Suggested by rmind.
1.42	20-Oct-2007	xtraeme	performance fix: in the workqueue handler only refresh the sensor once, not multiple times for the same sensor and clear its state after all events were processed.
1.41	13-Oct-2007	xtraeme	branches: 1.41.2; sme_event_drvadd: there's no need to acquire the mutex only when setting the object on its dictionary.
1.40	13-Oct-2007	xtraeme	Use PRI_NONE for the priority argument in workqueue_create(9).
1.39	11-Oct-2007	xtraeme	Check for the low power condition only when a new battery state sensor changed its state, there's no need to check this in all cases.
1.38	10-Oct-2007	xtraeme	Fix the problems described in: http://mail-index.netbsd.org/current-users/2007/07/16/0012.html - Introduce sme_class into the sysmon_envsys struct to specify a class; currently there are two classes: SME_CLASS_ACADAPTER and SME_CLASS_BATTERY. - Add a new envsys event: PENVSYS_EVENT_LOW_POWER that is reached when all SME_CLASS_BATTERY devices are in CRITICAL/LOW state and there's not any SME_CLASS_ACADAPTER connected. - Add the 'low-power' event into the sensor_battery script that will shutdown the system gracefully via 'shutdown -p'. If powerd(8) is not running, cpu_reboot(9) with RB_POWERDOWN is used. - Make acpiacad(4) a SME_CLASS_ACADAPTER device and acpibat(4) a SME_CLASS_BATTERY device. Update the documentation accordingly to these changes.
1.37	07-Oct-2007	xtraeme	sme_event_unregister: remove a goto that is not needed anymore.
1.36	07-Oct-2007	xtraeme	New changes to support the new configuration file format for envstat(8) and the envsys framework: - Modify the ENVSYS_SETDICTIONARY ioctl to support the following plist structure: <dict> <key>foo0</key> <array> <dict> <key>index</key> <string>sensor0</string> <key>description</key> <string>cpu temp</string> ... Another property for this sensor ... </dict> ... Another dictionary for other sensor ... </array> ... Another device as above ... </dict> Multiple devices with multiple sensors can now be specified, that means that to set the properties only one copyin(9) is needed now. - Added the ENVSYS_REMOVEPROPS ioctl, that accepts a boolean object "envsys-remove-props" and when set to true, all properties that were set previously by ENVSYS_SETDICTIONARY will be removed. That means that you can now set multiple critical limits, descriptions and all they will be removed or changed to its default value (for rfact and description objects). - Added the 'index' and 'allow-rfact' objects into the sensor dictionaries, for better interactivity with userland. To know the position of the sensor and to know if sensor allows to change the rfact. - Misc cosmetic changes for consistency. - Use a two clause license for all my code.
1.35	08-Sep-2007	xtraeme	branches: 1.35.2; Use panic(9) for previous. To make pooka and rmind happy.
1.34	08-Sep-2007	xtraeme	sme_event_worker: in PENVSYS_EVENT_STATE_CHANGED, only ENVSYS_DRIVE or ENVSYS_BATTERY_STATE sensors are allowed for now. Other type of sensors will be ignored. Added this to make Coverity Prevent happy.
1.33	08-Sep-2007	xtraeme	Use only one single condvar(9) for devices and events, they are protected by the same mutex (sme_mtx) and there's no point in using two of them. Also add a comment mentioning some locking notes. Reviewed and ok by rmind.
1.32	08-Sep-2007	xtraeme	Disable debug, committed accidentally in previous.
1.31	08-Sep-2007	xtraeme	- Use only one global mutex for all tasks with devices & events. - sysmon_envsys_register: use a SLIST to maintain allocated sme_event_drv_t structs for later use in sysmon_task_queue_sched(). This avoids a locking error acquiring/dropping the mutex multiple times. Suggested by rmind.
1.30	08-Sep-2007	xtraeme	Fix previous.
1.29	07-Sep-2007	xtraeme	- sme_event_unregister_all: check if sme_events_initialized is set before calling sme_events_destroy(). - sme_event_worker: remove a KASSERT and always check if returned sme is NULL and do not continue the task.
1.28	04-Sep-2007	xtraeme	- Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.27	01-Sep-2007	xtraeme	branches: 1.27.2; sme_event_register: don't forget to add the object in dictionary when a critical value is added via ENVSYS_SETDICTIONARY.
1.26	01-Sep-2007	xtraeme	sme_event_register: sme_sensor_upint32() was being called even when adding events via sme_event_drvadd(), fix it.
1.25	31-Aug-2007	xtraeme	- sme_unregister_all: there's no need to use a struct sysmon_envsys as argument, just pass sme->sme_name to it. - sysmon_envsys_register: drop the array in all cases, not just when there's an error. The reference is stored in the dictionary anyway... - Update some comments.
1.24	31-Aug-2007	xtraeme	Merge sme_event_add() into sme_event_register()... there's no need to have two different functions for this.
1.23	31-Aug-2007	xtraeme	Simplify sme_event_add() and fix a problem when updating critical values.
1.22	31-Aug-2007	xtraeme	Add a few KASSERT(mutex_owned(&foo_lock)) as suggested by Andrew Doran.
1.21	30-Aug-2007	xtraeme	More misc changes for sysmon_envsys(9): - Add the SLIST for sensor descriptions and sme_uniqsensors into the struct sysmon_envsys (it's per device now). - Use only one common struct with three members for the static tables (there's no need to have different structs just for them). - While initializing/destroying the events framework, use the strategy specified by Andrew Doran in: http://mail-index.netbsd.org/tech-kern/2007/06/21/0025.html).
1.20	30-Aug-2007	xtraeme	Some changes to improve locking on sysmon_envsys(9): - Remove sme_mtx, a global lock (sme_list_mtx) is used to access to the sysmon envsys device. - Allocate memory with KM_NOSLEEP rather than KM_SLEEP if there's a mutex held, to avoid sleeping. - Remove sysmon_envsys_createplist() and add the logic into sysmon_envsys_register(). - sysmon_envsys_register: allocate the array and dictionaries required in advance for a device before the locking and adding the objects into the array happens. - Rename sme_make_dictionary() to sme_add_sensor_dictionary() and pass to it the dictionary on which the objects will be stored for a sensor. - Improve locking here and there. Thanks to Mindaugas Rasiukevicius and Andrew Doran for comments.
1.19	23-Jul-2007	xtraeme	branches: 1.19.4; 1.19.6; 1.19.8; - ENVSYS_SETDICTIONARY: use sysmon_envsys_release() if there's an error. - sme_events_worker: use sme_list_mtx when accessing to the sysmon_envsys linked list. - Improve the comments in sysmon_envsysvar.h about the mutexes and condvar.
1.18	21-Jul-2007	xtraeme	- Add sme_events_destroy() to stop/destroy the callout and workqueue if there are no more events. - Add sme_event_unregister_all() to remove all events associated with a device and use it in sysmon_envsys_unregister() to fix a "use-after-free". - Check return error of sme_sensor_upfoo() in sme_make_dictionary() and return it rather than 0 all the time. - Add more KASSERTS.
1.17	21-Jul-2007	xtraeme	Some fixes for kern/36673 by yamt@: - sme_register_sensorname: there's no need to handle empty list case. - 'obj' argument in sme_sensor_upstring and similar functions is useless: removed the obj argument from the functions, it's handled in the function itself now. - check for more errors in sme_make_dictionary() and sysmon_envsys_createplist().
1.16	20-Jul-2007	xtraeme	Replace the macros to create/update objects in dictionary with three inline functions, suggested by yamt@. This also gets rid of a few gotos.
1.15	18-Jul-2007	xtraeme	- More changes related to locking. - Add a condvar(9) to protect deletions on the list if there's an event in the worker thread.
1.14	17-Jul-2007	xtraeme	branches: 1.14.2; Add more debugging printfs to catch sensors with duplicate description, and some cosmetic ones.
1.13	14-Jul-2007	xtraeme	branches: 1.13.2; sme_events_worker: there's no need to use an extra int that gets the value of see->snum to get the index of sme_sensor_data, just use see->snum directly.
1.12	13-Jul-2007	xtraeme	sme_event_add: if the event is already on the list, update the critical value only if new value is different than the one it has. While I'm here, improve the debugging printf for this.
1.11	13-Jul-2007	xtraeme	sme_event_add: if sme_event_register() fails return the error of this function and not EINVAL.
1.10	13-Jul-2007	xtraeme	sme_events_worker: simplify the code that sends the events.
1.9	13-Jul-2007	xtraeme	sme_event_unregister: if the events list is empty, just after the callout is stopped, use callout_destroy().
1.8	12-Jul-2007	rmind	Implementation of per-CPU work-queues support for workqueue(9) interface. WQ_PERCPU flag for workqueue and additional argument for workqueue_enqueue() to assign a CPU might be used. Notes: - For now, the list is used for workqueue_queue, which is non-optimal, and will be changed with array, where index would be CPU ID. - The data structures should be changed to be cache-friendly. Reviewed by: <yamt>, <tech-kern>
1.7	10-Jul-2007	yamt	branches: 1.7.2; sme_events_init: create seewq with IPL_SOFTCLOCK as it's accessed by a callout.
1.6	09-Jul-2007	ad	Merge some of the less invasive changes from the vmlocking branch: - kthread, callout, devsw API changes - select()/poll() improvements - miscellaneous MT safety improvements
1.5	04-Jul-2007	xtraeme	Remove the max limit in the refresh value for the refresh_value sysctl, use whatever you want within the limits of an integer. Suggested by garbled@ and freza@.
1.4	03-Jul-2007	xtraeme	Erm, fix previous: 6min != 5min...
1.3	03-Jul-2007	xtraeme	Make the refresh value of the callout function (that monitors the sensors) configurable via sysctl. By default it uses 10 seconds, but it can be changed between 1 second and 5 minutes. $ sysctl -d kern.envsys kern.envsys.refresh_value: wait time in seconds to refresh sensors being monitored $
1.2	02-Jul-2007	xtraeme	sme_event_drvadd: - Check the error returned by sme_event_add() and print details if returned value is not EEXIST. - If sme_event_add() returned an error, don't add the monitoring-* object into the dictionary.
1.1	01-Jul-2007	xtraeme	Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.7.2.2	11-Jul-2007	mjf	Sync with head.
1.7.2.1	10-Jul-2007	mjf	file sysmon_envsys_events.c was added on branch mjf-ufs-trans on 2007-07-11 20:08:24 +0000
1.13.2.6	23-Oct-2007	ad	Sync with head.
1.13.2.5	12-Oct-2007	ad	Sync with head.
1.13.2.4	09-Oct-2007	ad	Sync with head.
1.13.2.3	20-Aug-2007	ad	Sync with HEAD.
1.13.2.2	15-Jul-2007	ad	Sync with head.
1.13.2.1	14-Jul-2007	ad	file sysmon_envsys_events.c was added on branch vmlocking on 2007-07-15 13:21:45 +0000
1.14.2.3	10-Sep-2007	skrll	Sync with HEAD.
1.14.2.2	03-Sep-2007	skrll	Sync with HEAD.
1.14.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.19.8.2	23-Jul-2007	xtraeme	- ENVSYS_SETDICTIONARY: use sysmon_envsys_release() if there's an error. - sme_events_worker: use sme_list_mtx when accessing to the sysmon_envsys linked list. - Improve the comments in sysmon_envsysvar.h about the mutexes and condvar.
1.19.8.1	23-Jul-2007	xtraeme	file sysmon_envsys_events.c was added on branch matt-mips64 on 2007-07-23 17:51:18 +0000
1.19.6.3	23-Mar-2008	matt	sync with HEAD
1.19.6.2	09-Jan-2008	matt	sync with HEAD
1.19.6.1	06-Nov-2007	matt	sync with HEAD
1.19.4.6	21-Nov-2007	joerg	Sync with HEAD.
1.19.4.5	04-Nov-2007	jmcneill	Sync with HEAD.
1.19.4.4	26-Oct-2007	joerg	Sync with HEAD. Follow the merge of pmap.c on i386 and amd64 and move pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup code to restore CR4 before jumping back into kernel space as the large page option might cover that.
1.19.4.3	07-Oct-2007	joerg	Sync with HEAD.
1.19.4.2	02-Oct-2007	joerg	Sync with HEAD.
1.19.4.1	03-Sep-2007	jmcneill	Sync with HEAD.
1.27.2.9	24-Mar-2008	yamt	sync with head.
1.27.2.8	17-Mar-2008	yamt	sync with head.
1.27.2.7	04-Feb-2008	yamt	sync with head.
1.27.2.6	21-Jan-2008	yamt	sync with head
1.27.2.5	07-Dec-2007	yamt	sync with head
1.27.2.4	15-Nov-2007	yamt	sync with head.
1.27.2.3	27-Oct-2007	yamt	sync with head.
1.27.2.2	03-Sep-2007	yamt	sync with head.
1.27.2.1	01-Sep-2007	yamt	file sysmon_envsys_events.c was added on branch yamt-lazymbuf on 2007-09-03 14:38:50 +0000
1.35.2.1	14-Oct-2007	yamt	sync with head.
1.41.2.4	21-Nov-2007	bouyer	Sync with HEAD
1.41.2.3	18-Nov-2007	bouyer	Sync with HEAD
1.41.2.2	13-Nov-2007	bouyer	Sync with HEAD
1.41.2.1	25-Oct-2007	bouyer	Sync with HEAD.
1.44.2.3	18-Feb-2008	mjf	Sync with HEAD.
1.44.2.2	08-Dec-2007	mjf	Sync with HEAD.
1.44.2.1	19-Nov-2007	mjf	Sync with HEAD.
1.46.6.1	02-Jan-2008	bouyer	Sync with HEAD
1.48.6.4	17-Jan-2009	mjf	Sync with HEAD.
1.48.6.3	28-Sep-2008	mjf	Sync with HEAD.
1.48.6.2	29-Jun-2008	mjf	Sync with HEAD.
1.48.6.1	03-Apr-2008	mjf	Sync with HEAD.
1.48.2.1	24-Mar-2008	keiichi	sync with head.
1.54.8.1	18-Jun-2008	simonb	Sync with head.
1.54.6.2	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.54.6.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.54.4.6	09-Oct-2010	yamt	sync with head
1.54.4.5	11-Aug-2010	yamt	sync with head.
1.54.4.4	11-Mar-2010	yamt	sync with head
1.54.4.3	18-Jul-2009	yamt	sync with head.
1.54.4.2	20-Jun-2009	yamt	sync with head
1.54.4.1	04-May-2009	yamt	sync with head.
1.54.2.1	17-Jun-2008	yamt	sync with head.
1.55.2.2	13-Dec-2008	haad	Update haad-dm branch to haad-dm-base2.
1.55.2.1	19-Oct-2008	haad	Sync with HEAD.
1.58.4.5	07-Jan-2011	riz	Pull up following revision(s) (requested by pgoyette in ticket #1505): sys/dev/sysmon/sysmon_envsys_events.c: revision 1.94 Make this compile when "options ENVSYS_OBJECTS_DEBUG" is defined.
1.58.4.4	13-Nov-2008	snj	Pull up following revision(s) (requested by tls in ticket #49): sys/dev/sysmon/sysmon_envsys_events.c: revision 1.62 Fix typo in previous, and wrap a panic with #ifdef DIAGNOSTIC
1.58.4.3	13-Nov-2008	snj	Pull up following revision(s) (requested by tls in ticket #49): sys/dev/sysmon/sysmon_envsys_events.c: revision 1.61 Initialize event's "previous sent state" based on the event monitor type, regardless of sensor type. Fixes spurious "device: normal state on 'sensor-name' messages (reported by ad@) which interfere with sysinst.
1.58.4.2	06-Nov-2008	snj	Pull up following revision(s) (requested by pgoyette in ticket #15): sys/dev/sysmon/sysmon_envsys_events.c: revision 1.60 Fix cut&paste error in prev
1.58.4.1	06-Nov-2008	snj	Pull up following revision(s) (requested by pgoyette in ticket #15): sys/dev/sysmon/sysmon_envsys_events.c: revision 1.59 Restore previous behavior concerning CRITICAL events. Send an event whenever state enters or exits CRITICAL, or whenever value of sensor changes while the state is CRITICAL.
1.58.2.2	28-Apr-2009	skrll	Sync with HEAD.
1.58.2.1	19-Jan-2009	skrll	Sync with HEAD.
1.62.4.2	23-Jul-2009	jym	Sync with HEAD.
1.62.4.1	13-May-2009	jym	Sync with HEAD. Commit is split, to avoid a "too many arguments" protocol error.
1.79.2.2	22-Oct-2010	uebayasi	Sync with HEAD (-D20101022).
1.79.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.85.2.3	12-Jun-2011	rmind	sync with head
1.85.2.2	05-Mar-2011	rmind	sync with head
1.85.2.1	30-May-2010	rmind	sync with head
1.97.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.98.8.4	07-Dec-2014	martin	Pull up following revision(s) (requested by ozaki-r in ticket #1201): sys/kern/kern_ktrace.c: revision 1.166 sys/dev/isa/aps.c: revision 1.16 sys/dev/sysmon/sysmonvar.h: revision 1.45 sys/dev/ir/irframe_tty.c: revision 1.60 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.111-1.112 (patch) sys/dev/pci/pccbb.c: revision 1.207 sys/dev/wscons/wskbd.c: revision 1.135 sys/dev/usb/ohci.c: revision 1.254 sys/net/if_ecosubr.c: revision 1.41 sys/dev/pcmcia/btbc.c: revision 1.17 sys/arch/x86/x86/via_padlock.c: revision 1.23 sys/dev/sdmmc/sdmmc.c: revision 1.23 (patch) sys/dev/bluetooth/btkbd.c: revision 1.17 sys/dev/bluetooth/bcsp.c: revision 1.25 sys/arch/x86/pci/fwhrng.c: revision 1.8 sys/dev/ic/nslm7x.c: revision 1.61 share/man/man9/callout.9: revision 1.28 (patch) Replace callout_stop with callout_halt and ensure the callout is not running before destroying it.
1.98.8.3	19-Oct-2012	riz	Remove stray CR characters introduced in ticket #544. From pgoyette.
1.98.8.2	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #545): etc/powerd/scripts/sensor_indicator: revision 1.5 sys/dev/sysmon/sysmon_envsys_tables.c: revision 1.11 sys/sys/envsys.h: revision 1.32 sys/dev/sysmon/sysmon_envsysvar.h: revision 1.43 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.104 Provide names for the values associated with INDICATOR sensors. 1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling. Handle any reports of state changes for INDICATORs
1.98.8.1	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #544): sys/dev/sysmon/sysmon_envsysvar.h: revision 1.42 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.99 sys/dev/sysmon/sysmon_envsys.c: revision 1.119 When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.98.2.4	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.98.2.3	23-Jan-2013	yamt	sync with head
1.98.2.2	16-Jan-2013	yamt	sync with (a bit old) head
1.98.2.1	30-Oct-2012	yamt	sync with head
1.105.2.4	03-Dec-2017	jdolecek	update from HEAD
1.105.2.3	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.105.2.2	25-Feb-2013	tls	resync with head
1.105.2.1	20-Nov-2012	tls	Resync to 2012-11-19 00:00:00 UTC
1.109.2.1	18-May-2014	rmind	sync with head
1.110.4.2	06-Apr-2015	snj	Pull up following revision(s) (requested by hannken in ticket #666): sys/dev/sysmon/sysmon_envsys.c: revision 1.129 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.114 sys/dev/sysmon/sysmonvar.h: revision 1.46 Add a counter of busy events and stop enqueueing more work if a device = is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.110.4.1	01-Dec-2014	martin	Pull up following revision(s) (requested by ozaki-r in ticket #279): sys/kern/kern_ktrace.c: revision 1.166 sys/dev/isa/aps.c: revision 1.16 sys/dev/sysmon/sysmonvar.h: revision 1.45 sys/dev/ir/irframe_tty.c: revision 1.60 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.111 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.112 sys/dev/pci/pccbb.c: revision 1.207 sys/dev/wscons/wskbd.c: revision 1.135 sys/dev/usb/ohci.c: revision 1.254 sys/net/if_ecosubr.c: revision 1.41 sys/dev/pcmcia/btbc.c: revision 1.17 sys/arch/x86/x86/via_padlock.c: revision 1.23 sys/dev/sdmmc/sdmmc.c: revision 1.23 sys/dev/bluetooth/btkbd.c: revision 1.17 sys/dev/bluetooth/bcsp.c: revision 1.25 sys/arch/x86/pci/fwhrng.c: revision 1.8 sys/dev/ic/nslm7x.c: revision 1.61 share/man/man9/callout.9: revision 1.28 Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. Discussed with martin@ and riastradh@. Make it clear that we should use not callout_stop but callout_halt before callout_destroy Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. In this case, we need to pass an interlock to callout_halt to wait for the callout complete. Reviewed by riastradh@. Kill sme_callout_mtx and use sme_mtx instead We can use sme_mtx for the callout as well. Actually we should do so because sme_events_list and some other data that are touched in the callout should be protected by sme_mtx, not sme_callout_mtx. Discussed with riastradh@ in http://mail-index.netbsd.org/tech-kern/2014/11/11/msg017956.html Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. In this case, we need to pass an interlock to callout_halt to wait for the callout complete. And also we make sure that SME_CALLOUT_INITIALIZED is unset before calling callout_halt to prevent the callout from calling callout_schedule. This is the same as what we did in sys/netinet6/mld6.c@1.61. Reviewed by riastradh@.
1.113.2.5	28-Aug-2017	skrll	Sync with HEAD
1.113.2.4	27-Dec-2015	skrll	Sync with HEAD (as of 26th Dec)
1.113.2.3	22-Sep-2015	skrll	Sync with HEAD
1.113.2.2	06-Jun-2015	skrll	Sync with HEAD
1.113.2.1	06-Apr-2015	skrll	Sync with HEAD
1.119.2.1	23-Sep-2017	snj	Pull up following revision(s) (requested by pgoyette in ticket #281): sys/dev/sysmon/sysmon_envsys.c: 1.140-1.141 sys/dev/sysmon/sysmon_envsys_events.c: 1.120-1.121 sys/dev/sysmon/sysmonvar.h: 1.50 Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d". Don't call rnd_detach_source() in sme_remove_event() which is called from sme_event_unregister_all(). Instead, call rnd_detach_source() in sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach() before sme_event_unregister_sensor(). Each sensor(envsys_data) has each rnd_src, but some sme_events point to the same rnd_src in a sensor. Calling rnd_detach_souce() twice with the same rnd_src brokes a reference count in rnd_src. OK'd by pgoyette@. -- Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533
1.14	21-Nov-2022	brad	A driver for the Bosch BMP280 / BME280 temperature, humidity and atmospheric pressure sensor. This is an inexpensive to moderately expensive chip available from a large number of places. The driver supports all aspects of the two chips, except for the repeating read mode which would allow for sub-second queries, such as fall detection or perhaps even as an altimeter. This driver also only supports the I2C interface and not the SPI interface. The BME280, the one with humidity, is not fully tested at this point, awaiting upon a breakout board and may not show proper humidity.
1.13	27-May-2018	thorpej	Add support for light sensors that report Illuminance in lux.
1.12	18-May-2014	kardel	branches: 1.12.26; add HYT-221/271/939 humidity/temperature I2C sensor extend envsys(4) framework by %rH (relative humidity)
1.11	27-Aug-2012	pgoyette	branches: 1.11.2; 1.11.4; 1.11.12; 1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling.
1.10	19-Jun-2011	nonaka	branches: 1.10.2; 1.10.8; Pass table_id to sme_find_table().
1.9	19-Jun-2011	nonaka	fix typo.
1.8	19-Jun-2011	christos	simplify and don't deref NULL.
1.7	19-Jun-2011	pgoyette	Add routine to lookup description tables by description instead of by type.
1.6	15-Dec-2010	pgoyette	branches: 1.6.6; Extract searching of description tables into a single function, rather than duplicating the code every time. Minor reduction in code size (about 1200 bytes on amd64), no change in functionality.
1.5	28-Feb-2008	xtraeme	branches: 1.5.26; Add three new values for ENVSYS_DRIVE units: * ENVSYS_DRIVE_OFFLINE, ENVSYS_DRIVE_CHECK and ENVSYS_DRIVE_BUILD
1.4	07-Dec-2007	xtraeme	branches: 1.4.8; 1.4.12; Add ENVSYS_DRIVE_MIGRATING for ENVSYS_DRIVE sensors, this is for RAID volumes that are migrating such as when you change the stripe size. While I'm here use the same string than we had in the old framework to report status "online" vs "drive is online", because the sensor might be a RAID volume and not just a drive.
1.3	03-Nov-2007	xtraeme	branches: 1.3.2; 1.3.4; 1.3.6; - Rename ENVSYS_BATTERY_STATE units to ENVSYS_BATTERY_CAPACITY and introduce ENVSYS_BATTERY_CHARGE, which is the same than an Indicator and it's used to know if the battery is currently charging or discharging. - Require two sensors at least for SME_CLASS_BATTERY to make the low-power condition work: a ENVSYS_BATTERY_CAPACITY plus ENVSYS_BATTERY_CHARGE. - Simplify sme_event_check_lowpower() and make it check the required sensors in the SME_CLASS_ACADAPTER and SME_CLASS_BATTERY classes. If the acadapter is not ready, trust the state returned by the battery device. Based on suggestion from joerg@.
1.2	07-Oct-2007	xtraeme	branches: 1.2.2; 1.2.4; 1.2.6; New changes to support the new configuration file format for envstat(8) and the envsys framework: - Modify the ENVSYS_SETDICTIONARY ioctl to support the following plist structure: <dict> <key>foo0</key> <array> <dict> <key>index</key> <string>sensor0</string> <key>description</key> <string>cpu temp</string> ... Another property for this sensor ... </dict> ... Another dictionary for other sensor ... </array> ... Another device as above ... </dict> Multiple devices with multiple sensors can now be specified, that means that to set the properties only one copyin(9) is needed now. - Added the ENVSYS_REMOVEPROPS ioctl, that accepts a boolean object "envsys-remove-props" and when set to true, all properties that were set previously by ENVSYS_SETDICTIONARY will be removed. That means that you can now set multiple critical limits, descriptions and all they will be removed or changed to its default value (for rfact and description objects). - Added the 'index' and 'allow-rfact' objects into the sensor dictionaries, for better interactivity with userland. To know the position of the sensor and to know if sensor allows to change the rfact. - Misc cosmetic changes for consistency. - Use a two clause license for all my code.
1.1	04-Sep-2007	xtraeme	branches: 1.1.2; 1.1.4; 1.1.6; - Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.1.6.5	09-Dec-2007	jmcneill	Sync with HEAD.
1.1.6.4	04-Nov-2007	jmcneill	Sync with HEAD.
1.1.6.3	07-Oct-2007	joerg	Sync with HEAD.
1.1.6.2	02-Oct-2007	joerg	Sync with HEAD.
1.1.6.1	04-Sep-2007	joerg	file sysmon_envsys_tables.c was added on branch jmcneill-pm on 2007-10-02 18:28:41 +0000
1.1.4.1	14-Oct-2007	yamt	sync with head.
1.1.2.2	10-Sep-2007	skrll	Sync with HEAD.
1.1.2.1	04-Sep-2007	skrll	file sysmon_envsys_tables.c was added on branch nick-csl-alignment on 2007-09-10 10:55:23 +0000
1.2.6.5	17-Mar-2008	yamt	sync with head.
1.2.6.4	07-Dec-2007	yamt	sync with head
1.2.6.3	15-Nov-2007	yamt	sync with head.
1.2.6.2	27-Oct-2007	yamt	sync with head.
1.2.6.1	07-Oct-2007	yamt	file sysmon_envsys_tables.c was added on branch yamt-lazymbuf on 2007-10-27 11:34:21 +0000
1.2.4.1	13-Nov-2007	bouyer	Sync with HEAD
1.2.2.2	09-Oct-2007	ad	Sync with head.
1.2.2.1	07-Oct-2007	ad	file sysmon_envsys_tables.c was added on branch vmlocking on 2007-10-09 13:42:06 +0000
1.3.6.1	08-Dec-2007	ad	Sync with head.
1.3.4.4	23-Mar-2008	matt	sync with HEAD
1.3.4.3	09-Jan-2008	matt	sync with HEAD
1.3.4.2	06-Nov-2007	matt	sync with HEAD
1.3.4.1	03-Nov-2007	matt	file sysmon_envsys_tables.c was added on branch matt-armv6 on 2007-11-06 23:30:20 +0000
1.3.2.1	08-Dec-2007	mjf	Sync with HEAD.
1.4.12.1	03-Apr-2008	mjf	Sync with HEAD.
1.4.8.1	24-Mar-2008	keiichi	sync with head.
1.5.26.1	05-Mar-2011	rmind	sync with head
1.6.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.10.8.1	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #545): etc/powerd/scripts/sensor_indicator: revision 1.5 sys/dev/sysmon/sysmon_envsys_tables.c: revision 1.11 sys/sys/envsys.h: revision 1.32 sys/dev/sysmon/sysmon_envsysvar.h: revision 1.43 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.104 Provide names for the values associated with INDICATOR sensors. 1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling. Handle any reports of state changes for INDICATORs
1.10.2.1	30-Oct-2012	yamt	sync with head
1.11.12.1	10-Aug-2014	tls	Rebase.
1.11.4.1	18-May-2014	rmind	sync with head
1.11.2.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.12.26.1	25-Jun-2018	pgoyette	Sync with HEAD
1.7	11-Jun-2020	thorpej	Update for proplib(3) API changes.
1.6	08-Jun-2020	thorpej	Update for proplib(3) API changes.
1.5	16-Nov-2007	xtraeme	Extend the envsys2 API (one more time, sorry) as defined in: http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html sysmon_envsys_create() and sysmon_envsys_destroy() were added to create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events). sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were added to attach/detach sensors to a specified sysmon_envsys device. The events framework is now per device and configurable via the ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8). Update all users and documentation to reflect these changes.
1.4	07-Oct-2007	xtraeme	branches: 1.4.2; 1.4.4; New changes to support the new configuration file format for envstat(8) and the envsys framework: - Modify the ENVSYS_SETDICTIONARY ioctl to support the following plist structure: <dict> <key>foo0</key> <array> <dict> <key>index</key> <string>sensor0</string> <key>description</key> <string>cpu temp</string> ... Another property for this sensor ... </dict> ... Another dictionary for other sensor ... </array> ... Another device as above ... </dict> Multiple devices with multiple sensors can now be specified, that means that to set the properties only one copyin(9) is needed now. - Added the ENVSYS_REMOVEPROPS ioctl, that accepts a boolean object "envsys-remove-props" and when set to true, all properties that were set previously by ENVSYS_SETDICTIONARY will be removed. That means that you can now set multiple critical limits, descriptions and all they will be removed or changed to its default value (for rfact and description objects). - Added the 'index' and 'allow-rfact' objects into the sensor dictionaries, for better interactivity with userland. To know the position of the sensor and to know if sensor allows to change the rfact. - Misc cosmetic changes for consistency. - Use a two clause license for all my code.
1.3	24-Sep-2007	plunky	do not use _nocopy, this string is part of another object that will be released shortly..
1.2	21-Jul-2007	xtraeme	branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10; 1.2.12; 1.2.14; 1.2.16; Some fixes for kern/36673 by yamt@: - sme_register_sensorname: there's no need to handle empty list case. - 'obj' argument in sme_sensor_upstring and similar functions is useless: removed the obj argument from the functions, it's handled in the function itself now. - check for more errors in sme_make_dictionary() and sysmon_envsys_createplist().
1.1	20-Jul-2007	xtraeme	Move the functions to create/update objects in a dictionary into its own file, and DO NOT MAKE THEM inline AS IT IS WRONG. Looks like I'm very stupid and I didn't know what inline meant. Thank you very much YAMAMOTO Takashi.
1.2.16.2	21-Jul-2007	xtraeme	Some fixes for kern/36673 by yamt@: - sme_register_sensorname: there's no need to handle empty list case. - 'obj' argument in sme_sensor_upstring and similar functions is useless: removed the obj argument from the functions, it's handled in the function itself now. - check for more errors in sme_make_dictionary() and sysmon_envsys_createplist().
1.2.16.1	21-Jul-2007	xtraeme	file sysmon_envsys_util.c was added on branch matt-mips64 on 2007-07-21 12:11:28 +0000
1.2.14.2	14-Oct-2007	yamt	sync with head.
1.2.14.1	06-Oct-2007	yamt	sync with head.
1.2.12.4	07-Dec-2007	yamt	sync with head
1.2.12.3	27-Oct-2007	yamt	sync with head.
1.2.12.2	03-Sep-2007	yamt	sync with head.
1.2.12.1	21-Jul-2007	yamt	file sysmon_envsys_util.c was added on branch yamt-lazymbuf on 2007-09-03 14:38:50 +0000
1.2.10.2	09-Jan-2008	matt	sync with HEAD
1.2.10.1	06-Nov-2007	matt	sync with HEAD
1.2.8.3	09-Oct-2007	ad	Sync with head.
1.2.8.2	20-Aug-2007	ad	Sync with HEAD.
1.2.8.1	21-Jul-2007	ad	file sysmon_envsys_util.c was added on branch vmlocking on 2007-08-20 22:07:05 +0000
1.2.6.2	15-Aug-2007	skrll	Sync with HEAD.
1.2.6.1	21-Jul-2007	skrll	file sysmon_envsys_util.c was added on branch nick-csl-alignment on 2007-08-15 13:48:46 +0000
1.2.4.3	21-Nov-2007	joerg	Sync with HEAD.
1.2.4.2	07-Oct-2007	joerg	Sync with HEAD.
1.2.4.1	02-Oct-2007	joerg	Sync with HEAD.
1.4.4.1	19-Nov-2007	mjf	Sync with HEAD.
1.4.2.1	18-Nov-2007	bouyer	Sync with HEAD
1.48	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.47	23-Nov-2014	ozaki-r	Pull workqueue_destroy out of sme->sme_mtx workqueue_destroy may sleep so we shouldn't run it with holding a mutex. Requested by riastradh@.
1.46	14-Dec-2012	pgoyette	The sensor limit values were moved out of the event structure and into the per-sensor structure a long time ago. Garbage collect the old structure member which is now unused.
1.45	06-Sep-2012	macallan	branches: 1.45.2; opt_envsys.h needs #ifdef _KERNEL_OPT ( thanks martin@ )
1.44	06-Sep-2012	macallan	defflag debug #defines
1.43	27-Aug-2012	pgoyette	1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling.
1.42	15-Jul-2012	pgoyette	When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.41	18-Feb-2012	matt	Don't export sysmon_envsys_list as a common.
1.40	19-Jun-2011	pgoyette	branches: 1.40.2; 1.40.6; 1.40.8; Add routine to lookup description tables by description instead of by type.
1.39	08-Jun-2011	pgoyette	Factor out some duplicated code to simplify maintenance. Reduces the source file by ~100 lines, and amd64 object file shrinks by ~650 bytes. No functional change intended.
1.38	30-Dec-2010	pgoyette	branches: 1.38.6; When the user updates the sensor device's refresh timer, reset the callout immediately rather than waiting for the previous timer to expire.
1.37	15-Dec-2010	pgoyette	Extract searching of description tables into a single function, rather than duplicating the code every time. Minor reduction in code size (about 1200 bytes on amd64), no change in functionality.
1.36	10-Apr-2010	pgoyette	When removing sensor properties with envstat -S, ensure that drivers which could have modified hardware state are informed so that original state can be restored. Welcome to 5.99.27
1.35	01-Apr-2010	pgoyette	Permit creation of an event-monitor for alarm limits even if the limits are not currently set (and, in case of battery capacity sensors, if there is no value_max). Ensure that such an event-monitor does not trigger the delivery of any actual events. Provide a mechanism for sensors to set their limits at time other than system startup (for example, when a battery is inserted). This allows us to boot a system with a battery missing, install the battery some time later, and automatically monitor it without requiring any user intervention to create the event-monitor. (The actual changes for battery sensors to use this new capability will come later.)
1.34	19-Mar-2010	pgoyette	Modify previous commit. The routine to deliver events is intended to be exported to device drivers, so rename it and move the declaration to <dev/sysmon/sysmonvar.h>
1.33	19-Mar-2010	pgoyette	Separate event delivery from polling and limit evaluation in sme_events_worker(). Provide a wrapper that can be called from sensor drivers' interrupt routines to find and deliver a specific event. XXX Actually updating sensor drivers (and their parent devices) to XXX have interrupts is a future enhancement. This is simply an XXX enabler.
1.32	14-Mar-2010	pgoyette	branches: 1.32.2; Retire the 'monitor' member of the envsys_data_t. It was only used in one place, and functioned as a logical OR of the ENVSYS_FMON* flag bits.
1.31	14-Feb-2010	pgoyette	Remove the flags member of the limits structure. Its value was only meaningful for a few limited function calls; all persitent storage of limit-present flags is maintained in the edata->upropset member.
1.30	13-Jun-2009	pgoyette	branches: 1.30.2; Add capability to send sensor limit values to the driver so they can be programmed into device registers. This way we can let the hardware help us out instead of having to always compare the value against each limit. (Driver updates for some sensors to take advantage of this capability will be forthcoming.)
1.29	08-Jun-2009	pgoyette	General clean-up and some restructuring of event handling. This is a precursor to letting sensor drivers actually exchange limits/thresholds with user-land.
1.28	22-Aug-2008	pgoyette	branches: 1.28.8; 1. provide for warning-min and warning-max alarm levels in addition to critical-min and critical-max; also, a battery warning-capacity is added in addition to a critical-capacity. 2. usr.sbin/envstat is modified to introduce a -W command line switch to display the warning-* values instead of the critical-* values, and envstat(8) and envsys.conf(5) man pages are updated appropriately. 3. Treat user-defined limits as a single continuum and generate a single event regardless of how many boundaries a change in sensor value crosses; ditto for driver-defined limits. Fixes my PR/39021 Fixes my PR/39022 OK'd by christos@ bouyer@ cube@
1.27	01-Apr-2008	xtraeme	branches: 1.27.4; 1.27.6; 1.27.10; Introduce per-device locking/synchronization and maintain only a global mutex for the linked list of devices and the global proplib dictionary. This has improved locking contention a lot when multiple devices with multiple monitoring events are running: New: 0.30 35 0.33 sme_global_mtx sysmonioctl_envsys+28b 0.10 10 0.11 00000000cd97feac sysmon_envsys_acquire+4c 0.08 6 0.09 00000000cd97feac sme_update_dictionary+24f 0.01 4 0.01 00000000cd97feac sme_events_worker+2f 0.01 10 0.01 00000000cd97fe2c sysmon_envsys_acquire+4c 0.00 1 0.00 00000000cd97fe2c sysmon_envsys_release+3b 28.38 94 9.16 sme_global_mtx sysmonioctl_envsys+28b 4.54 74 1.47 00000000cd97fe2c sysmon_envsys_acquire+4c 0.06 3 0.02 00000000cd97fe2c sysmon_envsys_release+3b 0.03 1 0.01 00000000cd97fe2c sme_events_worker+2f 1.40 19 0.45 00000000cd97bee4 sysmon_envsys_acquire+4c Old: 4.25 313 4.74 sme_mtx <all> 3.12 185 3.49 sme_mtx sme_events_worker+21 1.12 128 1.25 sme_mtx sysmonioctl_envsys+29b 34.75 1423 59.52 sme_mtx <all> 22.08 477 37.82 sme_mtx sysmonioctl_envsys+29b 12.67 946 21.70 sme_mtx sme_events_worker+21
1.26	20-Nov-2007	xtraeme	branches: 1.26.14; After comments from Andrew Doran: - The mutex for the callout handler must run at IPL_SOFTCLOCK. - Just stop the callout in sysmon_envsys_unregister() and don't wait for the callout to finish.
1.25	16-Nov-2007	xtraeme	Remove duplicate sme_events_list.
1.24	16-Nov-2007	xtraeme	Extend the envsys2 API (one more time, sorry) as defined in: http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html sysmon_envsys_create() and sysmon_envsys_destroy() were added to create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events). sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were added to attach/detach sensors to a specified sysmon_envsys device. The events framework is now per device and configurable via the ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8). Update all users and documentation to reflect these changes.
1.23	03-Nov-2007	xtraeme	branches: 1.23.2; - Rename ENVSYS_BATTERY_STATE units to ENVSYS_BATTERY_CAPACITY and introduce ENVSYS_BATTERY_CHARGE, which is the same than an Indicator and it's used to know if the battery is currently charging or discharging. - Require two sensors at least for SME_CLASS_BATTERY to make the low-power condition work: a ENVSYS_BATTERY_CAPACITY plus ENVSYS_BATTERY_CHARGE. - Simplify sme_event_check_lowpower() and make it check the required sensors in the SME_CLASS_ACADAPTER and SME_CLASS_BATTERY classes. If the acadapter is not ready, trust the state returned by the battery device. Based on suggestion from joerg@.
1.22	23-Oct-2007	xtraeme	Use a flag for see_flags to know when the sensor has been refreshed rather than using a boolean. Suggested by rmind.
1.21	20-Oct-2007	xtraeme	performance fix: in the workqueue handler only refresh the sensor once, not multiple times for the same sensor and clear its state after all events were processed.
1.20	07-Oct-2007	xtraeme	branches: 1.20.2; New changes to support the new configuration file format for envstat(8) and the envsys framework: - Modify the ENVSYS_SETDICTIONARY ioctl to support the following plist structure: <dict> <key>foo0</key> <array> <dict> <key>index</key> <string>sensor0</string> <key>description</key> <string>cpu temp</string> ... Another property for this sensor ... </dict> ... Another dictionary for other sensor ... </array> ... Another device as above ... </dict> Multiple devices with multiple sensors can now be specified, that means that to set the properties only one copyin(9) is needed now. - Added the ENVSYS_REMOVEPROPS ioctl, that accepts a boolean object "envsys-remove-props" and when set to true, all properties that were set previously by ENVSYS_SETDICTIONARY will be removed. That means that you can now set multiple critical limits, descriptions and all they will be removed or changed to its default value (for rfact and description objects). - Added the 'index' and 'allow-rfact' objects into the sensor dictionaries, for better interactivity with userland. To know the position of the sensor and to know if sensor allows to change the rfact. - Misc cosmetic changes for consistency. - Use a two clause license for all my code.
1.19	08-Sep-2007	xtraeme	branches: 1.19.2; Use only one single condvar(9) for devices and events, they are protected by the same mutex (sme_mtx) and there's no point in using two of them. Also add a comment mentioning some locking notes. Reviewed and ok by rmind.
1.18	08-Sep-2007	xtraeme	- Use only one global mutex for all tasks with devices & events. - sysmon_envsys_register: use a SLIST to maintain allocated sme_event_drv_t structs for later use in sysmon_task_queue_sched(). This avoids a locking error acquiring/dropping the mutex multiple times. Suggested by rmind.
1.17	04-Sep-2007	xtraeme	- Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.16	31-Aug-2007	xtraeme	branches: 1.16.2; - sme_unregister_all: there's no need to use a struct sysmon_envsys as argument, just pass sme->sme_name to it. - sysmon_envsys_register: drop the array in all cases, not just when there's an error. The reference is stored in the dictionary anyway... - Update some comments.
1.15	31-Aug-2007	xtraeme	Merge sme_event_add() into sme_event_register()... there's no need to have two different functions for this.
1.14	30-Aug-2007	xtraeme	More misc changes for sysmon_envsys(9): - Add the SLIST for sensor descriptions and sme_uniqsensors into the struct sysmon_envsys (it's per device now). - Use only one common struct with three members for the static tables (there's no need to have different structs just for them). - While initializing/destroying the events framework, use the strategy specified by Andrew Doran in: http://mail-index.netbsd.org/tech-kern/2007/06/21/0025.html).
1.13	30-Aug-2007	xtraeme	Some changes to improve locking on sysmon_envsys(9): - Remove sme_mtx, a global lock (sme_list_mtx) is used to access to the sysmon envsys device. - Allocate memory with KM_NOSLEEP rather than KM_SLEEP if there's a mutex held, to avoid sleeping. - Remove sysmon_envsys_createplist() and add the logic into sysmon_envsys_register(). - sysmon_envsys_register: allocate the array and dictionaries required in advance for a device before the locking and adding the objects into the array happens. - Rename sme_make_dictionary() to sme_add_sensor_dictionary() and pass to it the dictionary on which the objects will be stored for a sensor. - Improve locking here and there. Thanks to Mindaugas Rasiukevicius and Andrew Doran for comments.
1.12	23-Jul-2007	xtraeme	branches: 1.12.4; 1.12.6; 1.12.8; - ENVSYS_SETDICTIONARY: use sysmon_envsys_release() if there's an error. - sme_events_worker: use sme_list_mtx when accessing to the sysmon_envsys linked list. - Improve the comments in sysmon_envsysvar.h about the mutexes and condvar.
1.11	22-Jul-2007	xtraeme	Fix the last point reported by yamt in PR kern/36673: - There must be three mandatory objects in a sensor to be valid and be enabled on its dictionary: units, state and desc. If any of these objects fails for some reason, its dictionary won't created in the array and sensor will be marked with ENVSYS_FNOTVALID in edata->flags. That means there won't never be a partial dictionary. - Mark all invalid sensors and sensors with duplicate description with ENVSYS_FNOTVALID and remove ENVSYS_FDUPDESC. The former is the generic way to say that a sensor does not obey the rules and must be not created. - sysmon_envsys_createplist: if the array does not contain any object, release the array and return the error. And with all that stuff I can go to holidays and be happy.
1.10	21-Jul-2007	xtraeme	- Add sme_events_destroy() to stop/destroy the callout and workqueue if there are no more events. - Add sme_event_unregister_all() to remove all events associated with a device and use it in sysmon_envsys_unregister() to fix a "use-after-free". - Check return error of sme_sensor_upfoo() in sme_make_dictionary() and return it rather than 0 all the time. - Add more KASSERTS.
1.9	21-Jul-2007	xtraeme	Some fixes for kern/36673 by yamt@: - sme_register_sensorname: there's no need to handle empty list case. - 'obj' argument in sme_sensor_upstring and similar functions is useless: removed the obj argument from the functions, it's handled in the function itself now. - check for more errors in sme_make_dictionary() and sysmon_envsys_createplist().
1.8	20-Jul-2007	xtraeme	Move the functions to create/update objects in a dictionary into its own file, and DO NOT MAKE THEM inline AS IT IS WRONG. Looks like I'm very stupid and I didn't know what inline meant. Thank you very much YAMAMOTO Takashi.
1.7	20-Jul-2007	xtraeme	Replace the macros to create/update objects in dictionary with three inline functions, suggested by yamt@. This also gets rid of a few gotos.
1.6	19-Jul-2007	xtraeme	Apply some indent to recent changes.
1.5	18-Jul-2007	xtraeme	- More changes related to locking. - Add a condvar(9) to protect deletions on the list if there's an event in the worker thread.
1.4	18-Jul-2007	xtraeme	- Cleanup sme_event_t: just use the struct work without any union and remove the TAILQ. - If prop_dictionary_set_* fails, do not release the object. The function calling it will release the object. Pointed out by yamt@.
1.3	05-Jul-2007	xtraeme	branches: 1.3.2; 1.3.4; 1.3.6; SENSOR_UPTYPE: accept values of 0 for any object, so that the value is showed in its dictionary.
1.2	03-Jul-2007	xtraeme	Make the refresh value of the callout function (that monitors the sensors) configurable via sysctl. By default it uses 10 seconds, but it can be changed between 1 second and 5 minutes. $ sysctl -d kern.envsys kern.envsys.refresh_value: wait time in seconds to refresh sensors being monitored $
1.1	01-Jul-2007	xtraeme	Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.3.6.3	10-Sep-2007	skrll	Sync with HEAD.
1.3.6.2	03-Sep-2007	skrll	Sync with HEAD.
1.3.6.1	15-Aug-2007	skrll	Sync with HEAD.
1.3.4.4	09-Oct-2007	ad	Sync with head.
1.3.4.3	20-Aug-2007	ad	Sync with HEAD.
1.3.4.2	15-Jul-2007	ad	Sync with head.
1.3.4.1	05-Jul-2007	ad	file sysmon_envsysvar.h was added on branch vmlocking on 2007-07-15 13:21:45 +0000
1.3.2.2	11-Jul-2007	mjf	Sync with head.
1.3.2.1	05-Jul-2007	mjf	file sysmon_envsysvar.h was added on branch mjf-ufs-trans on 2007-07-11 20:08:25 +0000
1.12.8.2	23-Jul-2007	xtraeme	- ENVSYS_SETDICTIONARY: use sysmon_envsys_release() if there's an error. - sme_events_worker: use sme_list_mtx when accessing to the sysmon_envsys linked list. - Improve the comments in sysmon_envsysvar.h about the mutexes and condvar.
1.12.8.1	23-Jul-2007	xtraeme	file sysmon_envsysvar.h was added on branch matt-mips64 on 2007-07-23 17:51:18 +0000
1.12.6.2	09-Jan-2008	matt	sync with HEAD
1.12.6.1	06-Nov-2007	matt	sync with HEAD
1.12.4.6	21-Nov-2007	joerg	Sync with HEAD.
1.12.4.5	04-Nov-2007	jmcneill	Sync with HEAD.
1.12.4.4	26-Oct-2007	joerg	Sync with HEAD. Follow the merge of pmap.c on i386 and amd64 and move pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup code to restore CR4 before jumping back into kernel space as the large page option might cover that.
1.12.4.3	07-Oct-2007	joerg	Sync with HEAD.
1.12.4.2	02-Oct-2007	joerg	Sync with HEAD.
1.12.4.1	03-Sep-2007	jmcneill	Sync with HEAD.
1.16.2.5	07-Dec-2007	yamt	sync with head
1.16.2.4	15-Nov-2007	yamt	sync with head.
1.16.2.3	27-Oct-2007	yamt	sync with head.
1.16.2.2	03-Sep-2007	yamt	sync with head.
1.16.2.1	31-Aug-2007	yamt	file sysmon_envsysvar.h was added on branch yamt-lazymbuf on 2007-09-03 14:38:51 +0000
1.19.2.1	14-Oct-2007	yamt	sync with head.
1.20.2.4	21-Nov-2007	bouyer	Sync with HEAD
1.20.2.3	18-Nov-2007	bouyer	Sync with HEAD
1.20.2.2	13-Nov-2007	bouyer	Sync with HEAD
1.20.2.1	25-Oct-2007	bouyer	Sync with HEAD.
1.23.2.2	08-Dec-2007	mjf	Sync with HEAD.
1.23.2.1	19-Nov-2007	mjf	Sync with HEAD.
1.26.14.2	28-Sep-2008	mjf	Sync with HEAD.
1.26.14.1	03-Apr-2008	mjf	Sync with HEAD.
1.27.10.1	19-Oct-2008	haad	Sync with HEAD.
1.27.6.1	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.27.4.4	11-Aug-2010	yamt	sync with head.
1.27.4.3	11-Mar-2010	yamt	sync with head
1.27.4.2	20-Jun-2009	yamt	sync with head
1.27.4.1	04-May-2009	yamt	sync with head.
1.28.8.1	23-Jul-2009	jym	Sync with HEAD.
1.30.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.32.2.3	12-Jun-2011	rmind	sync with head
1.32.2.2	05-Mar-2011	rmind	sync with head
1.32.2.1	30-May-2010	rmind	sync with head
1.38.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.40.8.3	19-Oct-2012	riz	Remove stray CR characters introduced in ticket #544. From pgoyette.
1.40.8.2	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #545): etc/powerd/scripts/sensor_indicator: revision 1.5 sys/dev/sysmon/sysmon_envsys_tables.c: revision 1.11 sys/sys/envsys.h: revision 1.32 sys/dev/sysmon/sysmon_envsysvar.h: revision 1.43 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.104 Provide names for the values associated with INDICATOR sensors. 1. Enable use of FMONSTCHANGED events for INDICATOR sensors 2. Update handling of FMONCRITICAL event reporting. The state transition does not require a corresponding change in value. With these changes, you can now have an INDICATOR sensor that reports the presence or absence of a device, and (if the device is present) separately monitor it for proper functioning. Should address the concerns expressed recently with the commit of changes to wmi(4) BBU handling. Handle any reports of state changes for INDICATORs
1.40.8.1	17-Oct-2012	riz	Pull up following revision(s) (requested by pgoyette in ticket #544): sys/dev/sysmon/sysmon_envsysvar.h: revision 1.42 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.99 sys/dev/sysmon/sysmon_envsys.c: revision 1.119 When unregistering a sensor device, make sure we unregister and delete all the associated events.
1.40.6.1	18-Feb-2012	mrg	merge to -current.
1.40.2.3	23-Jan-2013	yamt	sync with head
1.40.2.2	30-Oct-2012	yamt	sync with head
1.40.2.1	17-Apr-2012	yamt	sync with head
1.45.2.2	03-Dec-2017	jdolecek	update from HEAD
1.45.2.1	25-Feb-2013	tls	resync with head
1.69	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.68	26-Sep-2021	thorpej	- Call selnotify() with sysmon_power_event_queue_mtx held, passing the correct hints. Adjust filt_sysmon_power_read() accordingly (assert that the mutex is held iff NOTE_SUBMIT). - Mark sysmon_power_read_filtops as MPSAFE. - Use seltrue_filtops rather than rolling our own with filt_seltrue.
1.67	26-Sep-2021	thorpej	Change the kqueue filterops::f_isfd field to filterops::f_flags, and define a flag FILTEROP_ISFD that has the meaning of the prior f_isfd. Field and flag name aligned with OpenBSD. This does not constitute a functional or ABI change, as the field location and size, and the value placed in that field, are the same as the previous code, but we're bumping __NetBSD_Version__ so 3rd-party module source code can adapt, as needed. NetBSD 9.99.89
1.66	18-Dec-2020	thorpej	Use sel{remove,record}_knote().
1.65	30-Oct-2020	christos	branches: 1.65.2; fix indentation
1.64	11-Jun-2020	thorpej	Update for proplib(3) API changes.
1.63	08-Jun-2020	thorpej	Update for proplib(3) API changes.
1.62	01-Jan-2020	thorpej	- Introduce a new global kernel variable "shutting_down" to indicate that the system is shutting down or rebooting. - Set this global in a new function called kern_reboot(), which is currently just a basic wrapper around cpu_reboot(). - Call kern_reboot() instead of cpu_reboot() almost everywhere; a few places remain where it's still called directly, but those are in early pre-main() machdep locations. Eventually, all of the various cpu_reboot() functions should be re-factored and common functionality moved to kern_reboot(), but that's for another day.
1.61	20-Aug-2019	maxv	Fix info leak, not all of 'pev' is initialized.
1.60	01-Mar-2019	pgoyette	branches: 1.60.4; Rename the MODULE__HOOK() macros to MODULE_HOOK_() as briefly discussed on irc. NFCI intended. Ride the earlier kernel bump - it;s getting crowded.
1.59	27-Jan-2019	pgoyette	Merge the [pgoyette-compat] branch
1.58	25-Oct-2017	maya	branches: 1.58.2; 1.58.4; Use C99 initializer for filterops Mostly done with spatch with touchups for indentation @@ expression a; identifier b,c,d; identifier p; @@ const struct filterops p = - { a, b, c, d + { + .f_isfd = a, + .f_attach = b, + .f_detach = c, + .f_event = d, };
1.57	14-Dec-2015	pgoyette	branches: 1.57.10; sysmon's components need to be MODULE_CLASS_DRIVER so they will get initialized before we configure/initialize any devices that interact with them. Thanks, marty!
1.56	24-Aug-2015	pooka	to garnish, dust with _KERNEL_OPT
1.55	25-Apr-2015	pgoyette	Handle early initialization requirements - thanks martin@ and others
1.54	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.53	13-Apr-2015	riastradh	Convert sys/dev to use <sys/rndsource.h>.
1.52	04-Apr-2015	christos	another missing free dict.
1.51	04-Apr-2015	christos	don't forget to free the dictionary.
1.50	04-Apr-2015	riastradh	Free ped if we can't hand it to the power daemon. Found by Brainy, reported by maxv@.
1.49	06-Jan-2015	bouyer	As proposed on tech-net@, introduce a new switch type, PSWITCH_TYPE_RADIO, to be used to report to userland hardware radio switch changes. powerd(8) will call a "radio_button" script to handle the event. This script can e.g. start or stop wpa_supplicant. Update wpi(4) to report PSWITCH_TYPE_RADIO events to sysmon.
1.48	21-Nov-2014	joerg	branches: 1.48.2; Explicitly compare to NULL to show clang that the bool conversion is intentional, even if it is always true in case of the arrays.
1.47	10-Aug-2014	tls	branches: 1.47.2; Merge tls-earlyentropy branch into HEAD.
1.46	02-Feb-2012	tls	branches: 1.46.6; 1.46.20; Entropy-pool implementation move and cleanup. 1) Move core entropy-pool code and source/sink/sample management code to sys/kern from sys/dev. 2) Remove use of NRND as test for presence of entropy-pool code throughout source tree. 3) Remove use of RND_ENABLED in device drivers as microoptimization to avoid expensive operations on disabled entropy sources; make the rnd_add calls do this directly so all callers benefit. 4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might have lead to slight entropy overestimation for some sources. 5) Add new source types for environmental sensors, power sensors, VM system events, and skew between clocks, with a sample implementation for each. ok releng to go in before the branch due to the difficulty of later pullup (widespread #ifdef removal and moved files). Tested with release builds on amd64 and evbarm and live testing on amd64.
1.45	22-Jul-2011	jakllsch	branches: 1.45.2; 1.45.6; Ensure events come off the list in the same order they went on. Hotkey press/release events now happen in the correct order.
1.44	11-Mar-2010	jruoho	Fix comment typos (mangement, managmenet).
1.43	15-Feb-2010	pgoyette	For symmetry, allow warning and critical upper-limits for capacity sensors.
1.42	06-Nov-2009	jakllsch	branches: 1.42.2; Fix POWER_IOC_GET_TYPE. The longest string in use with this seems to have been "acpi", so size_t covered that, but on 32-bit ports omited the NUL.
1.41	08-Jun-2009	pgoyette	General clean-up and some restructuring of event handling. This is a precursor to letting sensor drivers actually exchange limits/thresholds with user-land.
1.40	05-Sep-2008	gmcgarry	branches: 1.40.8; Rearrange sysmonread_power() to have a single exit point, which simplifies the locking and fixes -Wunreachable-code warning.
1.39	22-Aug-2008	pgoyette	1. provide for warning-min and warning-max alarm levels in addition to critical-min and critical-max; also, a battery warning-capacity is added in addition to a critical-capacity. 2. usr.sbin/envstat is modified to introduce a -W command line switch to display the warning-* values instead of the critical-* values, and envstat(8) and envsys.conf(5) man pages are updated appropriately. 3. Treat user-defined limits as a single continuum and generate a single event regardless of how many boundaries a change in sensor value crosses; ditto for driver-defined limits. Fixes my PR/39021 Fixes my PR/39022 OK'd by christos@ bouyer@ cube@
1.38	10-May-2008	jmcneill	branches: 1.38.4; Use aprint when reporting AC adapter status.
1.37	01-Mar-2008	rmind	branches: 1.37.2; 1.37.4; 1.37.6; Welcome to 4.99.55: - Add a lot of missing selinit() and seldestroy() calls. - Merge selwakeup() and selnotify() calls into a single selnotify(). - Add an additional 'events' argument to selnotify() call. It will indicate which event (POLL_IN, POLL_OUT, etc) happen. If unknown, zero may be used. Note: please pass appropriate value of 'events' where possible. Proposed on: <tech-kern>
1.36	29-Feb-2008	xtraeme	Added a missing break that was bothering me.
1.35	22-Dec-2007	jmcneill	branches: 1.35.2; 1.35.6; Handle hotkey events using /etc/powerd/scripts/hotkey_button, ok xtraeme
1.34	09-Dec-2007	martin	branches: 1.34.2; Add missing <sys/device.h> include.
1.33	09-Dec-2007	jmcneill	Merge jmcneill-pm branch.
1.32	05-Dec-2007	pooka	branches: 1.32.2; Do not "return 1" from kqfilter for errors. That value is passed directly to the userland caller and results in a mysterious EPERM. Instead, return EINVAL or something else sensible depending on the case.
1.31	05-Dec-2007	ad	Match the docs: MUTEX_DRIVER/SPIN are now only for porting code written for Solaris.
1.30	10-Nov-2007	xtraeme	branches: 1.30.2; Add another flag that is set only when the event was enqueued (and its dictionary created) successfully and use it in the POWER_EVENT_RECVDICT ioctl to check if the dictionary is ready before calling prop_dictionary_copyout_ioctl(). This fixes a rare condition when too many events are enqueued and there wasn't time to create the dictionary, so prop_dictionary_copyout_ioctl() fails with a NULL pointer dereference.
1.29	10-Oct-2007	xtraeme	branches: 1.29.2; 1.29.4; Fix the problems described in: http://mail-index.netbsd.org/current-users/2007/07/16/0012.html - Introduce sme_class into the sysmon_envsys struct to specify a class; currently there are two classes: SME_CLASS_ACADAPTER and SME_CLASS_BATTERY. - Add a new envsys event: PENVSYS_EVENT_LOW_POWER that is reached when all SME_CLASS_BATTERY devices are in CRITICAL/LOW state and there's not any SME_CLASS_ACADAPTER connected. - Add the 'low-power' event into the sensor_battery script that will shutdown the system gracefully via 'shutdown -p'. If powerd(8) is not running, cpu_reboot(9) with RB_POWERDOWN is used. - Make acpiacad(4) a SME_CLASS_ACADAPTER device and acpibat(4) a SME_CLASS_BATTERY device. Update the documentation accordingly to these changes.
1.28	06-Oct-2007	xtraeme	Forgot to change the kmem_zalloc(9) calls to use KM_NOSLEEP in previous, as was suggested by rmind.
1.27	06-Oct-2007	xtraeme	Fix a bug that happened when two or more events were received almost at the same time and the code accessed to an unexistent dictionary: - Rather than using a global dictionary, use a singly linked list to access to the dictionaries, one per event. - When the dictionary has been sent to userland, destroy it and remove it from the list. With that change it is possible to receive multiple events at the same time without panics; again thanks to rmind@ for comments and help with locking. Reviewed and ok by rmind.
1.26	06-Oct-2007	xtraeme	- sysmon_power_daemon_task: check if pev is valid before use. - Add two more KASSERTS in strategic places.
1.25	25-Sep-2007	xtraeme	- Don't use _nocopy in prop_dictionary_set_cstring, the string is part of another object that will be released shortly. - Fix a memleak: add sysmon_power_destroy_dictionary() and remove all objects that are currently in the dictionary and finally release the dictionary.
1.24	04-Sep-2007	xtraeme	branches: 1.24.2; - Remove ENVSYS_GSTRING and the genstr member from envsys_data_t. (at least three or four persons were against it). - Add a new sensor type: ENVSYS_BATTERY_STATE, this uses value_cur and some predefined values in a static table, like ENVSYS_DRIVE. - Move all static tables to sysmon_envsys_tables.c and use a function on it to retrieve a pointer to the struct of the specified type. - Rename the ENVSYS_FMONDRVSTCHANGED to ENVSYS_FMONSTCHANGED and make it generic for Battery state and drive sensors (this flag enables monitoring on these sensors when state has been changed). - Update sysmon_penvsys_event() to report state changes on ENVSYS_BATTERY_STATE sensors and remove other type of events, with PENVSYS_EVENT_STATE_CHANGED they are not necessary anymore.
1.23	03-Sep-2007	xtraeme	Add some KASSERT(mutex_owned(&foo_lock)).
1.22	17-Aug-2007	pavel	branches: 1.22.2; Add missing #include <prop/proplib.h>, should fix build failure reported by Juergen Hannken-Illjes. The code apparently relied on proplib.h being included indirectly through proc.h -> event.h -> ioctl.h -> dkio.h.
1.21	07-Aug-2007	xtraeme	The acpilid(4) powerd script is "lid_switch" not "lid_button"... found by jmcneill@.
1.20	15-Jul-2007	ad	branches: 1.20.2; 1.20.6; The power daemon is now an LWP.
1.19	02-Jul-2007	xtraeme	Add PENVSYS_TYPE_INDICATOR to handle events on Indicator sensors. ipmi(4) uses this for the Intrussion and Power Supply sensors.
1.18	01-Jul-2007	xtraeme	Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.17	04-Mar-2007	christos	branches: 1.17.2; 1.17.4; Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
1.16	19-Feb-2007	ad	Back out previous for now. There isn't currently an easy way to set up shared state before these get attached or used. From xtraeme@.
1.15	18-Feb-2007	xtraeme	* Replace simple_locks and exclusive locks with adaptive mutexes. * Replace ltsleep/wakeup pairs with condition variables (cv_init/cv_wait/cv_broadcast). Reviewed by ad@.
1.14	16-Nov-2006	christos	branches: 1.14.4; __unused removal on arguments; approved by core.
1.13	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.12	08-Jun-2006	freza	branches: 1.12.6; 1.12.8; Advance queue indices properly instead of silently rewriting sysmon_power_event_queue[0] all the time. OK by thorpej@
1.11	11-Dec-2005	christos	branches: 1.11.4; 1.11.8; 1.11.14; merge ktrace-lwp.
1.10	22-May-2004	cube	branches: 1.10.10; 1.10.12; According to acpi_acad.c and powerd(8), PRESSED event for AC adapter device means it gets connected. It feels odd to be told the AC adapter went offline right after plugging it in.
1.9	03-May-2004	kochi	Add AC adapter event type.
1.8	14-Jul-2003	lukem	branches: 1.8.4; add missing __KERNEL_RCSID()
1.7	29-Jun-2003	fvdl	branches: 1.7.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.6	28-Jun-2003	darrenr	Pass lwp pointers throughtout the kernel, as required, so that the lwpid can be inserted into ktrace records. The general change has been to replace "struct proc " with "struct lwp " in various function prototypes, pass the lwp through and use l_proc to get the process pointer when needed. Bump the kernel rev up to 1.6V
1.5	19-May-2003	kochi	Fix a locking problem, which closes kern/21607. ok'd by Jason Thorpe.
1.4	11-May-2003	fvdl	Fix format / number of argument mismatch for a printf.
1.3	20-Apr-2003	thorpej	Add a "reset button" type.
1.2	18-Apr-2003	thorpej	* Add a generic power management event API, defined in <sys/power.h>. Right now, only power switch state change events are supported. This is a work-in-progress. * Add support to sysmon for delivering power mangement events to userland. Add poll, kqueue, and read entry points to sysmon. * Adapt ACPI to use the new generic <sys/power.h> event types. This provides the kernel support for a forthcoming powerd(8) which can do nice things like gracefully shut the system down when an ACPI power button is pressed.
1.1	17-Apr-2003	thorpej	Start at a power management framework for sysmon. Right now we just provide some VERY basic support for power/sleep buttons and lid switches; if someone presses the power button, shut down the system semi-gracefully. Eventually, we will send events for all types of button/lid events down to a userland power management daemon, which will be able to define a separate policy for each button/switch.
1.7.2.4	21-Sep-2004	skrll	Fix the sync with head I botched.
1.7.2.3	18-Sep-2004	skrll	Sync with HEAD.
1.7.2.2	03-Aug-2004	skrll	Sync with HEAD
1.7.2.1	02-Jul-2003	darrenr	Apply the aborted ktrace-lwp changes to a specific branch. This is just for others to review, I'm concerned that patch fuziness may have resulted in some errant code being generated but I'll look at that later by comparing the diff from the base to the branch with the file I attempt to apply to it. This will, at the very least, put the changes in a better context for others to review them and attempt to tinker with removing passing of 'struct lwp' through the kernel.
1.8.4.1	03-Aug-2006	tron	Pull up following revision(s) (requested by freza in ticket #10642): sys/dev/sysmon/sysmon_power.c: revision 1.12 via patch Advance queue indices properly instead of silently rewriting sysmon_power_event_queue[0] all the time. OK by thorpej@
1.10.12.8	17-Mar-2008	yamt	sync with head.
1.10.12.7	21-Jan-2008	yamt	sync with head
1.10.12.6	07-Dec-2007	yamt	sync with head
1.10.12.5	15-Nov-2007	yamt	sync with head.
1.10.12.4	27-Oct-2007	yamt	sync with head.
1.10.12.3	03-Sep-2007	yamt	sync with head.
1.10.12.2	30-Dec-2006	yamt	sync with head.
1.10.12.1	21-Jun-2006	yamt	sync with head.
1.10.10.1	13-Jun-2006	tron	Pull up following revision(s) (requested by freza in ticket #1369): sys/dev/sysmon/sysmon_power.c: revision 1.12 Advance queue indices properly instead of silently rewriting sysmon_power_event_queue[0] all the time. OK by thorpej@
1.11.14.1	19-Jun-2006	chap	Sync with head.
1.11.8.1	26-Jun-2006	yamt	sync with head.
1.11.4.1	09-Sep-2006	rpaulo	sync with head
1.12.8.2	10-Dec-2006	yamt	sync with head.
1.12.8.1	22-Oct-2006	yamt	sync with head
1.12.6.1	18-Nov-2006	ad	Sync with head.
1.14.4.1	12-Mar-2007	rmind	Sync with HEAD.
1.17.4.1	11-Jul-2007	mjf	Sync with head.
1.17.2.9	12-Oct-2007	ad	Sync with head.
1.17.2.8	09-Oct-2007	ad	Sync with head.
1.17.2.7	09-Oct-2007	ad	Sync with head.
1.17.2.6	20-Aug-2007	ad	Sync with HEAD.
1.17.2.5	15-Jul-2007	ad	Sync with head.
1.17.2.4	15-Jul-2007	ad	Sync with head.
1.17.2.3	09-Jul-2007	ad	Make sysmon_power_daemon of type lwp_t *.
1.17.2.2	05-Apr-2007	ad	Compile fixes.
1.17.2.1	21-Mar-2007	ad	GC the simplelock/spinlock debugging stuff.
1.20.6.10	09-Dec-2007	jmcneill	Sync with HEAD.
1.20.6.9	08-Dec-2007	jmcneill	Rename pnp(9) -> pmf(9), as requested by many.
1.20.6.8	11-Nov-2007	joerg	Sync with HEAD.
1.20.6.7	06-Nov-2007	joerg	Refactor PNP API: - Make suspend/resume directly a device functionality. It consists of three layers (class logic, device logic, bus logic), all of them being optional. This replaces D0/D3 transitions. - device_is_active returns true if the device was not disabled and was not suspended (even partially), device_is_enabled returns true if the device was enabled. - Change pnp_global_transition into pnp_system_suspend and pnp_system_resume. Before running any suspend/resume handlers, check that all currently attached devices support power management and bail out otherwise. The latter is not done for the shutdown/panic case. - Make the former bus-specific generic network handlers a class handler. - Make PNP message like volume up/down/toogle PNP events. Each device can register what events they are interested in and whether the handler should be global or not. - Introduce device_active API for devices to mark themselve in use from either the system or the device. Use this to implement the idle handling for audio and input devices. This is intended to replace most ad-hoc watchdogs as well. - Fix somes situations in which audio resume would lose mixer settings. - Make USB host controllers better deal with suspend in the light of shared interrupts. - Flush filesystem cache on suspend. - Flush disk caches on suspend. Put ATA disks into standby on suspend as well. - Adopt drivers to use the new PNP API. - Fix a critical bug in the generic cardbus layer that made D0->D3 break. - Fix ral(4) to set if_stop. - Convert cbb(4) to the new PNP API. - Apply the PCI Express SCI fix on resume again.
1.20.6.6	26-Oct-2007	joerg	Sync with HEAD. Follow the merge of pmap.c on i386 and amd64 and move pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup code to restore CR4 before jumping back into kernel space as the large page option might cover that.
1.20.6.5	07-Oct-2007	joerg	Sync with HEAD.
1.20.6.4	02-Oct-2007	joerg	Sync with HEAD.
1.20.6.3	03-Sep-2007	jmcneill	Sync with HEAD.
1.20.6.2	09-Aug-2007	jmcneill	Sync with HEAD.
1.20.6.1	03-Aug-2007	jmcneill	Pull in power management changes from private branch.
1.20.2.3	10-Sep-2007	skrll	Sync with HEAD.
1.20.2.2	03-Sep-2007	skrll	Sync with HEAD.
1.20.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.22.2.3	23-Mar-2008	matt	sync with HEAD
1.22.2.2	09-Jan-2008	matt	sync with HEAD
1.22.2.1	06-Nov-2007	matt	sync with HEAD
1.24.2.2	14-Oct-2007	yamt	sync with head.
1.24.2.1	06-Oct-2007	yamt	sync with head.
1.29.4.3	27-Dec-2007	mjf	Sync with HEAD.
1.29.4.2	08-Dec-2007	mjf	Sync with HEAD.
1.29.4.1	19-Nov-2007	mjf	Sync with HEAD.
1.29.2.1	13-Nov-2007	bouyer	Sync with HEAD
1.30.2.2	26-Dec-2007	ad	Sync with head.
1.30.2.1	08-Dec-2007	ad	Sync with head.
1.32.2.1	11-Dec-2007	yamt	sync with head.
1.34.2.1	02-Jan-2008	bouyer	Sync with HEAD
1.35.6.3	28-Sep-2008	mjf	Sync with HEAD.
1.35.6.2	02-Jun-2008	mjf	Sync with HEAD.
1.35.6.1	03-Apr-2008	mjf	Sync with HEAD.
1.35.2.1	24-Mar-2008	keiichi	sync with head.
1.37.6.2	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.37.6.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.37.4.5	11-Aug-2010	yamt	sync with head.
1.37.4.4	11-Mar-2010	yamt	sync with head
1.37.4.3	20-Jun-2009	yamt	sync with head
1.37.4.2	04-May-2009	yamt	sync with head.
1.37.4.1	16-May-2008	yamt	sync with head.
1.37.2.1	18-May-2008	yamt	sync with head.
1.38.4.1	19-Oct-2008	haad	Sync with HEAD.
1.40.8.1	23-Jul-2009	jym	Sync with HEAD.
1.42.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.45.6.1	18-Feb-2012	mrg	merge to -current.
1.45.2.1	17-Apr-2012	yamt	sync with head
1.46.20.1	07-Apr-2014	tls	Be a little more clear and consistent about harvesting entropy from devices: 1) deprecate RND_FLAG_NO_ESTIMATE 2) define RND_FLAG_COLLECT_TIME, RND_FLAG_COLLECT_VALUE 3) define RND_FLAG_ESTIMATE_TIME, RND_FLAG_ESTIMATE_VALUE 4) define RND_FLAG_DEFAULT: RND_FLAG_COLLECT_TIME\| RND_FLAG_COLLECT_VALUE\|RND_FLAG_ESTIMATE_TIME 5) Make entropy harvesting from environmental sensors a little more generic and remove it from individual sensor drivers. 6) Remove individual open-coded delta-estimators for values from a few places in the tree (uvm, environmental drivers). 7) 0 -> RND_FLAG_DEFAULT, actually gather entropy from various drivers that had stubbed out code, other minor cleanups.
1.46.6.2	03-Dec-2017	jdolecek	update from HEAD
1.46.6.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.47.2.2	16-May-2015	snj	Pull up following revision(s) (requested by maxv in ticket #761): sys/arch/sgimips/dev/scn.c: revision 1.8 sys/arch/sgimips/mace/macekbc.c: revision 1.8 sys/dev/hpc/hpcfb.c: revision 1.59 sys/dev/i2c/i2c.c: revision 1.47 sys/dev/ic/mfi.c: revision 1.57 sys/dev/if_ndis/if_ndis_pci.c: revision 1.21 sys/dev/sysmon/sysmon_power.c: revisions 1.50-1.52 sys/dev/usb/umass_isdata.c: revision 1.31 fix double free, found by Brainy. -- Free cmd on error if we allocated it. Found by Brainy, reported by maxv@. -- don't leak rl (but there are other leaks), found by Brainy. -- Free ped if we can't hand it to the power daemon. Found by Brainy, reported by maxv@. -- don't forget to free the dictionary. -- another missing free dict. -- fix leak, found by Brainy. -- don't malloc a tiny, fixed size buffer to scribble into, then not use it and never free it either found by Brainy -- malloc() -> kmem_alloc() for private data, also kmem_free() them if we don't finish attaching for whatever reason found by Brainy
1.47.2.1	12-Jan-2015	snj	Pull up following revision(s) (requested by bouyer in ticket #415): share/man/man9/sysmon_pswitch.9: revision 1.6 sys/dev/pci/if_wpi.c: revision 1.70, 1.71 sys/dev/pci/if_wpivar.h: revision 1.19 sys/dev/sysmon/sysmon_power.c: revision 1.49 sys/sys/power.h: revision 1.20 As proposed on tech-net@, introduce a new switch type, PSWITCH_TYPE_RADIO, to be used to report to userland hardware radio switch changes. powerd(8) will call a "radio_button" script to handle the event. This script can e.g. start or stop wpa_supplicant. Update wpi(4) to report PSWITCH_TYPE_RADIO events to sysmon. -- Take sc_rsw_mtx before calling wpi_getrfkill() from wpi_init(), Problem reported and patch tested by chris at chriswareham.net
1.48.2.4	27-Dec-2015	skrll	Sync with HEAD (as of 26th Dec)
1.48.2.3	22-Sep-2015	skrll	Sync with HEAD
1.48.2.2	06-Jun-2015	skrll	Sync with HEAD
1.48.2.1	06-Apr-2015	skrll	Sync with HEAD
1.57.10.1	10-Sep-2019	martin	Pull up following revision(s) (requested by maxv in ticket #1371): sys/dev/sysmon/sysmon_power.c: revision 1.61 Fix info leak, not all of 'pev' is initialized.
1.58.4.3	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.58.4.2	08-Apr-2020	martin	Merge changes from current as of 20200406
1.58.4.1	10-Jun-2019	christos	Sync with HEAD
1.58.2.9	22-Jan-2019	pgoyette	Convert the MODULE_{,VOID_}HOOK_CALL macros to do everything in-line rather than defining an intermediate hook##call function. Almost all of the hooks are called only once, and although we lose the ability of doing things like if (MODULE_HOOK_CALL(...) == 0) ... we simplify things quite a bit. With this change, we no longer need to have both declaration and definition macros, and the definition no longer needs to have both prototype argument list and a "real" argument list. FWIW, the above if now needs to written as int ret; MODULE_HOOK_CALL(..., ret); if (ret == 0) ... with appropriate use of braces {}.
1.58.2.8	21-Jan-2019	pgoyette	No need to declare the hook_call() function for void hooks. So remove and simplify.
1.58.2.7	14-Jan-2019	pgoyette	Create a variant of the HOOK macros that handles hook routines of type void, and use them where appropriate.
1.58.2.6	13-Jan-2019	pgoyette	Remove the HOOK2 versions of the MODULE_HOOK macros. There were only a few uses, and using them led to some lack of clarity in the code. Instead, we now use two separate hooks, with names that make it clear(er) what we're doing. This also positions us to start unraveling some of the rtsock_50 mess, which will need (at least) five hooks.
1.58.2.5	29-Sep-2018	pgoyette	In MODULE_HOOK_CALL_DECL we don't need to provide the actual argument list for calling the hook function, nor do we need to provide the default value (for when the hook has not been set).
1.58.2.4	18-Sep-2018	pgoyette	The COMPAT_HOOK macros were renamed to MODULE_HOOK, adjust all callers
1.58.2.3	18-Sep-2018	pgoyette	Split the COMPAT_CALL_HOOK to separate the declaration from the implementation. Some hooks are called from multiple source files, and the old method resulted in duplicate implementations. Implement MP-safe hooks for the usb_subr_30 code. Pass the helper functions as arguments to the compat code so it does not have to determine if the kernel contains usb code.
1.58.2.2	17-Sep-2018	pgoyette	Adapt (most of) the indirect function pointers to the new MP-safe mechanism. Still remaining are the compat_netbsd32 stuff, and some usb subroutines.
1.58.2.1	27-Mar-2018	pgoyette	Create a compat_40 module
1.60.4.1	01-Sep-2019	martin	Pull up following revision(s) (requested by maxv in ticket #128): sys/dev/sysmon/sysmon_power.c: revision 1.61 Fix info leak, not all of 'pev' is initialized.
1.65.2.1	03-Jan-2021	thorpej	Sync w/ HEAD.
1.23	31-Dec-2021	riastradh	sysmon(9): Fix mistake in sysmon_task_queue_barrier. Need to allocate the task structure with malloc(9), not on the stack; the task thread will free it with free(9). Forgot to squash this into previous commit.
1.22	31-Dec-2021	riastradh	sysmon(9): New sysmon_task_queue_barrier(pri) function. This waits for the completion of all tasks at priority pri or lower that are currently queued at the time of the call.
1.21	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.20	08-Feb-2018	dholland	Typos.
1.19	28-Apr-2015	martin	sysmon_task_queue_sched needs to RUN_ONCE(tq_preinit) as well, it can be called from sysmon_envsys_register() early.
1.18	27-Apr-2015	pgoyette	Replace a home-grown run-once implementation with the real RUN_ONCE()
1.17	24-Apr-2015	pgoyette	This really does need to return an error code, so change the sysmon_task_queue_fini() function to have a non-void type.
1.16	24-Apr-2015	agc	It's a function returning void; don't return an error code.
1.15	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.14	05-Sep-2008	gmcgarry	branches: 1.14.38; 1.14.58; Rearrange code in the sysmon queue execution thread to simplify locking logic. Removes unreachable code warning.
1.13	06-Apr-2008	xtraeme	branches: 1.13.4; 1.13.6; 1.13.10; Pass KTHREAD_MPSAFE to kthread_create(). I've been testing this for some weeks in both UP and SMP without any issue so far.
1.12	04-Jan-2008	ad	branches: 1.12.6; Start detangling lock.h from intr.h. This is likely to cause short term breakage, but the mess of dependencies has been regularly breaking the build recently anyhow.
1.11	05-Dec-2007	ad	branches: 1.11.4; Match the docs: MUTEX_DRIVER/SPIN are now only for porting code written for Solaris.
1.10	21-Jul-2007	xtraeme	branches: 1.10.4; 1.10.6; 1.10.12; 1.10.14; 1.10.16; Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.9	09-Jul-2007	ad	branches: 1.9.2; Merge some of the less invasive changes from the vmlocking branch: - kthread, callout, devsw API changes - select()/poll() improvements - miscellaneous MT safety improvements
1.8	27-Jun-2007	xtraeme	Use aprint_debug rather than printf for the annoying message "WARNING: Callback scheduled before sysmon task queue thread present.".
1.7	16-Nov-2006	christos	branches: 1.7.8; 1.7.10; __unused removal on arguments; approved by core.
1.6	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.5	11-Dec-2005	christos	branches: 1.5.20; 1.5.22; merge ktrace-lwp.
1.4	29-May-2005	christos	branches: 1.4.2; - add const - avoid variable shadowing.
1.3	06-Sep-2003	christos	Rename the thread command name so that it fits on top's display.
1.2	14-Jul-2003	lukem	add missing __KERNEL_RCSID()
1.1	20-Apr-2003	thorpej	branches: 1.1.2; Generic "task queue" for sysmon back-ends. This provides a thread context for callbacks that require it in order to handle sysmon-related events. Adapted from the "OsdSchedule" bits of the ACPI code.
1.1.2.4	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.1.2.3	21-Sep-2004	skrll	Fix the sync with head I botched.
1.1.2.2	18-Sep-2004	skrll	Sync with HEAD.
1.1.2.1	03-Aug-2004	skrll	Sync with HEAD
1.4.2.3	21-Jan-2008	yamt	sync with head
1.4.2.2	07-Dec-2007	yamt	sync with head
1.4.2.1	03-Sep-2007	yamt	sync with head.
1.5.22.2	10-Dec-2006	yamt	sync with head.
1.5.22.1	22-Oct-2006	yamt	sync with head
1.5.20.1	18-Nov-2006	ad	Sync with head.
1.7.10.1	11-Jul-2007	mjf	Sync with head.
1.7.8.5	20-Aug-2007	ad	Sync with HEAD.
1.7.8.4	15-Jul-2007	ad	Sync with head.
1.7.8.3	13-May-2007	ad	- Pass the error number and residual count to biodone(), and let it handle setting error indicators. Prepare to eliminate B_ERROR. - Add a flag argument to brelse() to be set into the buf's flags, instead of doing it directly. Typically used to set B_INVAL. - Add a "struct cpu_info *" argument to kthread_create(), to be used to create bound threads. Change "bool mpsafe" to "int flags". - Allow exit of LWPs in the IDL state when (l != curlwp). - More locking fixes & conversion to the new API.
1.7.8.2	10-Apr-2007	ad	Nuke the deferred kthread creation stuff, as it's no longer needed. Pointed out by thorpej@.
1.7.8.1	09-Apr-2007	ad	- Add two new arguments to kthread_create1: pri_t pri, bool mpsafe. - Fork kthreads off proc0 as new LWPs, not new processes.
1.9.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.10.16.2	21-Jul-2007	xtraeme	Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.10.16.1	21-Jul-2007	xtraeme	file sysmon_taskq.c was added on branch matt-mips64 on 2007-07-21 23:15:17 +0000
1.10.14.1	08-Dec-2007	ad	Sync with head.
1.10.12.2	18-Feb-2008	mjf	Sync with HEAD.
1.10.12.1	08-Dec-2007	mjf	Sync with HEAD.
1.10.6.1	09-Jan-2008	matt	sync with HEAD
1.10.4.1	09-Dec-2007	jmcneill	Sync with HEAD.
1.11.4.1	08-Jan-2008	bouyer	Sync with HEAD
1.12.6.2	28-Sep-2008	mjf	Sync with HEAD.
1.12.6.1	02-Jun-2008	mjf	Sync with HEAD.
1.13.10.1	19-Oct-2008	haad	Sync with HEAD.
1.13.6.1	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.13.4.1	04-May-2009	yamt	sync with head.
1.14.58.1	06-Jun-2015	skrll	Sync with HEAD
1.14.38.1	03-Dec-2017	jdolecek	update from HEAD
1.5	31-Dec-2021	riastradh	sysmon(9): New sysmon_task_queue_barrier(pri) function. This waits for the completion of all tasks at priority pri or lower that are currently queued at the time of the call.
1.4	27-Apr-2015	pgoyette	Replace a home-grown run-once implementation with the real RUN_ONCE()
1.3	24-Apr-2015	pgoyette	This really does need to return an error code, so change the sysmon_task_queue_fini() function to have a non-void type.
1.2	21-Jul-2007	xtraeme	branches: 1.2.38; 1.2.76; 1.2.96; Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.1	20-Apr-2003	thorpej	branches: 1.1.18; 1.1.60; 1.1.70; Generic "task queue" for sysmon back-ends. This provides a thread context for callbacks that require it in order to handle sysmon-related events. Adapted from the "OsdSchedule" bits of the ACPI code.
1.1.70.1	15-Aug-2007	skrll	Sync with HEAD.
1.1.60.1	20-Aug-2007	ad	Sync with HEAD.
1.1.18.1	03-Sep-2007	yamt	sync with head.
1.2.96.1	06-Jun-2015	skrll	Sync with HEAD
1.2.76.1	03-Dec-2017	jdolecek	update from HEAD
1.2.38.2	21-Jul-2007	xtraeme	Convert sysmon_taskqueue to use mutex(9) and condvar(9) and initialize them in init_main.c via sysmon_task_queue_preinit(). Reviewed and ok by ad@.
1.2.38.1	21-Jul-2007	xtraeme	file sysmon_taskq.h was added on branch matt-mips64 on 2007-07-21 23:15:18 +0000
1.30	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.29	14-Dec-2015	pgoyette	sysmon's components need to be MODULE_CLASS_DRIVER so they will get initialized before we configure/initialize any devices that interact with them. Thanks, marty!
1.28	05-Jun-2015	matt	Move callout_init to wdog_preinit
1.27	25-Apr-2015	pgoyette	Handle early initialization requirements - thanks martin@ and others
1.26	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.25	04-Jan-2011	matt	branches: 1.25.18; 1.25.36; add support for autostarting watchdogs (wdog was started by firmware and can't be disabled). Add critical pool hooks for kernel tickled watchdogs.
1.24	16-Dec-2007	dyoung	branches: 1.24.28; 1.24.32; 1.24.36; In sysmon_wdog_unregister(), do not return until all of the watchdog timer's users are gone. A signal cancels the unregister: sysmon_wdog_unregister() leaves the watchdog registered. The only user of sysmon_wdog_unregister() that I can find is in elansc(4), so this looks like a safe change to make.
1.23	15-Dec-2007	dyoung	Use LIST_FOREACH().
1.22	05-Dec-2007	ad	branches: 1.22.4; MUTEX_SPIN -> MUTEX_DEFAULT.
1.21	02-Sep-2007	xtraeme	branches: 1.21.6; 1.21.8; Add <sys/mutex.h> rather than <sys/lock.h>.
1.20	02-Sep-2007	xtraeme	Convert the sysmon watchdog framework to use mutex(9) rather than simple_locks and initialize them on init_main via sysmon_wdog_init(). All the sysmon code now is cleaned up and doesn't use old style locking.
1.19	09-Jul-2007	ad	branches: 1.19.2; 1.19.6; 1.19.8; Merge some of the less invasive changes from the vmlocking branch: - kthread, callout, devsw API changes - select()/poll() improvements - miscellaneous MT safety improvements
1.18	04-Mar-2007	christos	branches: 1.18.2; 1.18.4; Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
1.17	19-Feb-2007	ad	Back out previous for now. There isn't currently an easy way to set up shared state before these get attached or used. From xtraeme@.
1.16	19-Feb-2007	xtraeme	* sysmon_wdog_mtx needs to run at IPL_SOFTCLOCK. * replace SYSMON_WDOG_{LOCK,UNLOCK} macros with mutex_{enter,exit} reminded by ad@.
1.15	18-Feb-2007	xtraeme	Replace simple_locks with mutexes, reviewed by ad@.
1.14	16-Nov-2006	christos	branches: 1.14.4; __unused removal on arguments; approved by core.
1.13	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.12	11-Dec-2005	christos	branches: 1.12.20; 1.12.22; merge ktrace-lwp.
1.11	12-Jan-2005	drochner	branches: 1.11.10; apply an "& WDOG_MODE_MASK" so that user mode watchdogs started with "-A" are terminated properly
1.10	09-Jan-2005	smb	Add a software watchdog timer facility. Because this slightly changes the "tickle" model of wdogctl(8), it was modified as well; while I was in there, I cleaned up the argument parsing. The code was reviewed by simonb@.
1.9	30-Oct-2003	simonb	Remove some assigned-to but otherwise unused variables.
1.8	29-Jun-2003	fvdl	branches: 1.8.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.7	28-Jun-2003	darrenr	Pass lwp pointers throughtout the kernel, as required, so that the lwpid can be inserted into ktrace records. The general change has been to replace "struct proc " with "struct lwp " in various function prototypes, pass the lwp through and use l_proc to get the process pointer when needed. Bump the kernel rev up to 1.6V
1.6	30-Dec-2002	explorer	remove redundant defines
1.5	06-Oct-2002	kristerw	Correct possible return of uninitialized error variable.
1.4	31-Jul-2002	simonb	Fix WDOGIOC_GTICKLER for userland ticklers.
1.3	13-Nov-2001	lukem	branches: 1.3.8; add RCSIDs
1.2	30-Jan-2001	thorpej	branches: 1.2.2; 1.2.4; 1.2.6; Make sure to clear sysmon_armed_wdog once the watchdog timer is disarmed.
1.1	05-Nov-2000	thorpej	branches: 1.1.2; Split the envsys and watchdog parts of sysmon into their own files.
1.1.2.3	11-Feb-2001	bouyer	Sync with HEAD.
1.1.2.2	22-Nov-2000	bouyer	Sync with HEAD.
1.1.2.1	05-Nov-2000	bouyer	file sysmon_wdog.c was added on branch thorpej_scsipi on 2000-11-22 16:04:54 +0000
1.2.6.1	18-Sep-2001	fvdl	Various changes to make cloning devices possible: * Add an extra argument (struct vnode *) to VOP_OPEN. If it is not NULL, specfs will create a cloned (aliased) vnode during the call, and return it there. The caller should release and unlock the original vnode if a new vnode was returned. The new vnode is returned locked. Add a flag field to the cdevsw and bdevsw structures. DF_CLONING indicates that it wants a new vnode for each open (XXX is there a better way? devprop?) * If a device is cloning, always call the close entry point for a VOP_CLOSE. Also, rewrite cons.c to do the right thing with vnodes. Use VOPs rather then direct device entry calls. Suggested by mycroft@ Light to moderate testing done an i386 system (arch doesn't matter though, these are MI changes).
1.2.4.2	06-Sep-2002	jdolecek	sync kqueue branch with HEAD
1.2.4.1	10-Jan-2002	thorpej	Sync kqueue branch with -current.
1.2.2.4	03-Jan-2003	thorpej	Sync with HEAD.
1.2.2.3	18-Oct-2002	nathanw	Catch up to -current.
1.2.2.2	01-Aug-2002	nathanw	Catch up to -current.
1.2.2.1	14-Nov-2001	nathanw	Catch up to -current.
1.3.8.1	29-Aug-2002	gehenna	catch up with -current.
1.8.2.5	17-Jan-2005	skrll	Sync with HEAD.
1.8.2.4	21-Sep-2004	skrll	Fix the sync with head I botched.
1.8.2.3	18-Sep-2004	skrll	Sync with HEAD.
1.8.2.2	03-Aug-2004	skrll	Sync with HEAD
1.8.2.1	02-Jul-2003	darrenr	Apply the aborted ktrace-lwp changes to a specific branch. This is just for others to review, I'm concerned that patch fuziness may have resulted in some errant code being generated but I'll look at that later by comparing the diff from the base to the branch with the file I attempt to apply to it. This will, at the very least, put the changes in a better context for others to review them and attempt to tinker with removing passing of 'struct lwp' through the kernel.
1.11.10.5	21-Jan-2008	yamt	sync with head
1.11.10.4	07-Dec-2007	yamt	sync with head
1.11.10.3	03-Sep-2007	yamt	sync with head.
1.11.10.2	30-Dec-2006	yamt	sync with head.
1.11.10.1	21-Jun-2006	yamt	sync with head.
1.12.22.2	10-Dec-2006	yamt	sync with head.
1.12.22.1	22-Oct-2006	yamt	sync with head
1.12.20.1	18-Nov-2006	ad	Sync with head.
1.14.4.1	12-Mar-2007	rmind	Sync with HEAD.
1.18.4.1	11-Jul-2007	mjf	Sync with head.
1.18.2.2	09-Oct-2007	ad	Sync with head.
1.18.2.1	01-Jul-2007	ad	Adapt to callout API change.
1.19.8.2	09-Jan-2008	matt	sync with HEAD
1.19.8.1	06-Nov-2007	matt	sync with HEAD
1.19.6.2	09-Dec-2007	jmcneill	Sync with HEAD.
1.19.6.1	03-Sep-2007	jmcneill	Sync with HEAD.
1.19.2.1	03-Sep-2007	skrll	Sync with HEAD.
1.21.8.2	26-Dec-2007	ad	Sync with head.
1.21.8.1	08-Dec-2007	ad	Sync with head.
1.21.6.2	27-Dec-2007	mjf	Sync with HEAD.
1.21.6.1	08-Dec-2007	mjf	Sync with HEAD.
1.22.4.1	02-Jan-2008	bouyer	Sync with HEAD
1.24.36.1	07-Jan-2011	matt	Allow kernel ticklers to turn themselves on at boot.
1.24.32.1	05-Mar-2011	rmind	sync with head
1.24.28.2	15-Feb-2014	matt	move sysmon_wdog_setmode prototype to sysmonvar.h
1.24.28.1	13-May-2010	cliff	moveed callout_init call from sysmonopen_wdog to sysmon_wdog_init
1.25.36.2	27-Dec-2015	skrll	Sync with HEAD (as of 26th Dec)
1.25.36.1	06-Jun-2015	skrll	Sync with HEAD
1.25.18.1	03-Dec-2017	jdolecek	update from HEAD
1.4	23-Apr-2015	pgoyette	Modularize sysmon and its components
1.3	18-Apr-2003	thorpej	branches: 1.3.150; 1.3.170; * Add a generic power management event API, defined in <sys/power.h>. Right now, only power switch state change events are supported. This is a work-in-progress. * Add support to sysmon for delivering power mangement events to userland. Add poll, kqueue, and read entry points to sysmon. * Adapt ACPI to use the new generic <sys/power.h> event types. This provides the kernel support for a forthcoming powerd(8) which can do nice things like gracefully shut the system down when an ACPI power button is pressed.
1.2	31-Dec-2002	thorpej	Nothing cares about NSYSMON anymore; delete it.
1.1	05-Nov-2000	thorpej	branches: 1.1.2; 1.1.4; Split the envsys and watchdog parts of sysmon into their own files.
1.1.4.1	03-Jan-2003	thorpej	Sync with HEAD.
1.1.2.2	22-Nov-2000	bouyer	Sync with HEAD.
1.1.2.1	05-Nov-2000	bouyer	file sysmonconf.h was added on branch thorpej_scsipi on 2000-11-22 16:04:55 +0000
1.3.170.1	06-Jun-2015	skrll	Sync with HEAD
1.3.150.1	03-Dec-2017	jdolecek	update from HEAD
1.53	31-Dec-2021	riastradh	sysmon(9): Document lock order.
1.52	31-Dec-2021	riastradh	sysmon(9): Fix callout/thread synchronization. Callout may ONLY take sme_work_mtx, at IPL_SOFTCLOCK; MUST NOT touch sme_mtx at IPL_NONE. All state the callout needs is serialized by sme_work_mtx now: - calls to sme_schedule_callout - calls to sme_schedule_halt - struct sysmon_envsys::sme_events_timeout - struct sysmon_envsys::sme_events_list - struct sysmon_envsys::sme_callout_state - struct envsys_data::flags => yes, this is a little silly -- used for ENVSYS_FNEED_REFRESH => should maybe separate the static driver-defined features from the state flags needed by sysmon_envsys but not important now Sleeping under sme_work_mtx (except on other adaptive locks at IPL_SOFTCLOCK) is forbidden. Calling out to the driver under sme_work_mtx is forbidden. This should properly fix: https://mail-index.netbsd.org/tech-kern/2015/10/14/msg019511.html PR kern/56592
1.51	31-Dec-2021	riastradh	sysmon: Delete trailing whitespace. No functional change intended.
1.50	11-Sep-2017	pgoyette	Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533 XXX Pullup-8 along with the previous fixes from msaitoh@ XXX http://mail-index.netbsd.org/source-changes/2017/09/06/msg088028.html ~ ~
1.49	23-Apr-2015	pgoyette	branches: 1.49.10; Modularize sysmon and its components
1.48	18-Apr-2015	mlelstv	use unsigned type for flag bits.
1.47	13-Apr-2015	riastradh	Convert sys/dev to use <sys/rndsource.h>.
1.46	14-Mar-2015	hannken	Add a counter of busy events and stop enqueueing more work if a device is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.45	22-Nov-2014	ozaki-r	branches: 1.45.2; Kill sme_callout_mtx and use sme_mtx instead We can use sme_mtx for the callout as well. Actually we should do so because sme_events_list and some other data that are touched in the callout should be protected by sme_mtx, not sme_callout_mtx. Discussed with riastradh@ in http://mail-index.netbsd.org/tech-kern/2014/11/11/msg017956.html
1.44	11-Dec-2012	pgoyette	branches: 1.44.12; Replace a couple of many-line #define with equivalent code loops. No functional change intended, and atf tests (using swsensor(4)) still pass 100%
1.43	16-Jul-2012	pgoyette	branches: 1.43.2; Extend previous changes so that even sensors which don't use a refresh() callback to update the value can be polled to provide rnd(4) entropy.
1.42	15-Jul-2012	pgoyette	If a sensor is flagged as capable of providing rnd(4) with entropy, hook the sensor into rnd subsystem, and make sure we periodically refresh the sensor whether or not it is being actively monitored.
1.41	04-Jun-2011	pgoyette	branches: 1.41.2; 1.41.8; Since nothing actually records or maintains an average sensor value, remove value_avg from the prop_dict. We can't completely remove it because there's one driver that uses this field for its own private purposes, so for now we just rename the member.
1.40	04-Jan-2011	matt	branches: 1.40.2; 1.40.6; add support for autostarting watchdogs (wdog was started by firmware and can't be disabled). Add critical pool hooks for kernel tickled watchdogs.
1.39	11-Apr-2010	pgoyette	Use a typedef to define the prototype of the per-sensor callback. Update manpage for the prototype, and fix a fubar'd Cross-reference.
1.38	01-Apr-2010	pgoyette	Permit creation of an event-monitor for alarm limits even if the limits are not currently set (and, in case of battery capacity sensors, if there is no value_max). Ensure that such an event-monitor does not trigger the delivery of any actual events. Provide a mechanism for sensors to set their limits at time other than system startup (for example, when a battery is inserted). This allows us to boot a system with a battery missing, install the battery some time later, and automatically monitor it without requiring any user intervention to create the event-monitor. (The actual changes for battery sensors to use this new capability will come later.)
1.37	27-Mar-2010	pgoyette	Constify the args to sysmon_envsys_foreach_sensor()'s callback function.
1.36	27-Mar-2010	pgoyette	Fix the locking protocol in sysmon_envsys_foreach_sensor(), and add an additional argument to control whether or not the sensors are refreshed before invoking the callback routine.
1.35	26-Mar-2010	pgoyette	Add a routine to iterate over all the sensors on the system. This will be needed to update acpiapm_get_powstat() which is currently slightly broken due to recent rearrangement of acpi_bat(4)'s sensors. (This approach is in lieu of exporting proplists between kernel entities, and avoids exposing some internal sysmon_envsys details.)
1.34	19-Mar-2010	pgoyette	Modify previous commit. The routine to deliver events is intended to be exported to device drivers, so rename it and move the declaration to <dev/sysmon/sysmonvar.h>
1.33	14-Mar-2010	pgoyette	branches: 1.33.2; Retire the 'monitor' member of the envsys_data_t. It was only used in one place, and functioned as a logical OR of the ENVSYS_FMON* flag bits.
1.32	28-Feb-2010	pgoyette	Move definitions of internal data structures and flag bits to avoid exposing them to user-land.
1.31	14-Feb-2010	pgoyette	Remove the flags member of the limits structure. Its value was only meaningful for a few limited function calls; all persitent storage of limit-present flags is maintained in the edata->upropset member.
1.30	31-Jan-2010	martin	branches: 1.30.2; Add a convenience function to find the maximum value currently reported by a set (selected via a passed callback predicate) of sensors. This provides an easy way to query the current temperature of a thermal zone, for example, from within the kernel - assuming the caller knows the topology.
1.29	14-Jun-2009	pgoyette	Ooops - {get,set}_limits() need to be sensor-specific. Pass an extra argument to them to identify the individual sensor being processed.
1.28	13-Jun-2009	pgoyette	Add capability to send sensor limit values to the driver so they can be programmed into device registers. This way we can let the hardware help us out instead of having to always compare the value against each limit. (Driver updates for some sensors to take advantage of this capability will be forthcoming.)
1.27	03-Jun-2008	jmcneill	branches: 1.27.12; 1.27.16; 1.27.20; Add SME_POLL_ONLY flag, which informs sme to only refresh the sensor when it is polled (and not from GTREDATA).
1.26	04-Apr-2008	hannken	branches: 1.26.2; 1.26.4; 1.26.6; Update includes. Builds again on sparc64. Ok: Juan Romero Pardines <xtraeme@netbsd.org>
1.25	01-Apr-2008	xtraeme	Introduce per-device locking/synchronization and maintain only a global mutex for the linked list of devices and the global proplib dictionary. This has improved locking contention a lot when multiple devices with multiple monitoring events are running: New: 0.30 35 0.33 sme_global_mtx sysmonioctl_envsys+28b 0.10 10 0.11 00000000cd97feac sysmon_envsys_acquire+4c 0.08 6 0.09 00000000cd97feac sme_update_dictionary+24f 0.01 4 0.01 00000000cd97feac sme_events_worker+2f 0.01 10 0.01 00000000cd97fe2c sysmon_envsys_acquire+4c 0.00 1 0.00 00000000cd97fe2c sysmon_envsys_release+3b 28.38 94 9.16 sme_global_mtx sysmonioctl_envsys+28b 4.54 74 1.47 00000000cd97fe2c sysmon_envsys_acquire+4c 0.06 3 0.02 00000000cd97fe2c sysmon_envsys_release+3b 0.03 1 0.01 00000000cd97fe2c sme_events_worker+2f 1.40 19 0.45 00000000cd97bee4 sysmon_envsys_acquire+4c Old: 4.25 313 4.74 sme_mtx <all> 3.12 185 3.49 sme_mtx sme_events_worker+21 1.12 128 1.25 sme_mtx sysmonioctl_envsys+29b 34.75 1423 59.52 sme_mtx <all> 22.08 477 37.82 sme_mtx sysmonioctl_envsys+29b 12.67 946 21.70 sme_mtx sme_events_worker+21
1.24	23-Mar-2008	xtraeme	Fix some problems reported by <drochner> a while ago on tech-kern: sme_events_worker: skip sensors with invalid state. sme_acadapter_check: * use a boolean to check if an SME_CLASS_ACADAPTER was found. * Always refresh sensor data before checking value_cur. Introduce the SME_INIT_REFRESH flag. If a device sets this it will mean that after interrupts are enabled in the autoconf(9) process, sensor data will be refreshed once.
1.23	16-Dec-2007	dyoung	branches: 1.23.6; In sysmon_wdog_unregister(), do not return until all of the watchdog timer's users are gone. A signal cancels the unregister: sysmon_wdog_unregister() leaves the watchdog registered. The only user of sysmon_wdog_unregister() that I can find is in elansc(4), so this looks like a safe change to make.
1.22	20-Nov-2007	xtraeme	branches: 1.22.2; 1.22.6; After comments from Andrew Doran: - The mutex for the callout handler must run at IPL_SOFTCLOCK. - Just stop the callout in sysmon_envsys_unregister() and don't wait for the callout to finish.
1.21	16-Nov-2007	xtraeme	Extend the envsys2 API (one more time, sorry) as defined in: http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html sysmon_envsys_create() and sysmon_envsys_destroy() were added to create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events). sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were added to attach/detach sensors to a specified sysmon_envsys device. The events framework is now per device and configurable via the ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8). Update all users and documentation to reflect these changes.
1.20	03-Nov-2007	xtraeme	branches: 1.20.2; Remove sysmon_envsys_find() proto, it's defined on sysmon_envsysvar.h.
1.19	10-Oct-2007	xtraeme	branches: 1.19.2; Fix the problems described in: http://mail-index.netbsd.org/current-users/2007/07/16/0012.html - Introduce sme_class into the sysmon_envsys struct to specify a class; currently there are two classes: SME_CLASS_ACADAPTER and SME_CLASS_BATTERY. - Add a new envsys event: PENVSYS_EVENT_LOW_POWER that is reached when all SME_CLASS_BATTERY devices are in CRITICAL/LOW state and there's not any SME_CLASS_ACADAPTER connected. - Add the 'low-power' event into the sensor_battery script that will shutdown the system gracefully via 'shutdown -p'. If powerd(8) is not running, cpu_reboot(9) with RB_POWERDOWN is used. - Make acpiacad(4) a SME_CLASS_ACADAPTER device and acpibat(4) a SME_CLASS_BATTERY device. Update the documentation accordingly to these changes.
1.18	08-Sep-2007	xtraeme	branches: 1.18.2; - Build unconditionally compatibility code, there's no point to have it disabled, because some drivers depend in the old code yet. - Use a new mutex for sysmon_envsys_next_sensor_index (used in compatibility code), otherwise bad things happen with LKMs. Thanks to this, the hack for LKMs has been removed. - Check in advance if the driver doesn't exist already on the list before adding the sensors in the dictionary. - Don't forget to call sme_event_unregister_all() if sysmon_envsys_unregister() fails after adding the array into the global dictionary or when creating sensors. - Modify and add some DPRINTFs. The lm(4) lkm works without known problems registering and unregistering it multiple times.
1.17	02-Sep-2007	xtraeme	Convert the sysmon watchdog framework to use mutex(9) rather than simple_locks and initialize them on init_main via sysmon_wdog_init(). All the sysmon code now is cleaned up and doesn't use old style locking.
1.16	30-Aug-2007	xtraeme	More misc changes for sysmon_envsys(9): - Add the SLIST for sensor descriptions and sme_uniqsensors into the struct sysmon_envsys (it's per device now). - Use only one common struct with three members for the static tables (there's no need to have different structs just for them). - While initializing/destroying the events framework, use the strategy specified by Andrew Doran in: http://mail-index.netbsd.org/tech-kern/2007/06/21/0025.html). (forgot in previous)
1.15	01-Jul-2007	xtraeme	branches: 1.15.2; 1.15.6; 1.15.8; Imported envsys 2, a brief description of the new features: (Part 1: API) * Support for detachable sensors. * Cleaned up the API for simplicity and efficiency. * Ability to send capacity/critical/warning events to powerd(8). * Adapted all the code to the new locking order. * Compatibility with the old envsys API: the ENVSYS_GTREINFO and ENVSYS_GTREDATA ioctl(2)s are supported. * Added support for a 'dictionary based communication channel' between sysmon_power(9) and powerd(8), that means there is no 32 bytes event size restriction anymore. * Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40. * All drivers with the n^2 gtredata bug were fixed, PR kern/36226. Tested by: blymn: smsc(4). bouyer: ipmi(4), mfi(4). kefren: ug(4). njoly: viaenv(4), adt7463.c. riz: owtemp(4). xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).
1.14	08-May-2007	xtraeme	Remove duplicate sysmonioctl_envsys() prototype.
1.13	04-Mar-2007	christos	branches: 1.13.2; 1.13.4; Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
1.12	08-Jul-2006	christos	branches: 1.12.10; expose the ioctl internal function now used by the acpi_apm code.
1.11	11-Dec-2005	christos	branches: 1.11.4; 1.11.8; 1.11.16; merge ktrace-lwp.
1.10	11-Aug-2003	yamt	branches: 1.10.16; do wakeup() only when someone is waiting for us.
1.9	11-Aug-2003	yamt	introduce SME_FLAG_BUSY and set it during operations instead of keeping sysmon_envsys_list_slock spinlock held because some drivers might sleep in sysmon_envsys ops, XXX sysmon_envsys_lock is now redundant
1.8	29-Jun-2003	fvdl	branches: 1.8.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.7	28-Jun-2003	darrenr	Pass lwp pointers throughtout the kernel, as required, so that the lwpid can be inserted into ktrace records. The general change has been to replace "struct proc " with "struct lwp " in various function prototypes, pass the lwp through and use l_proc to get the process pointer when needed. Bump the kernel rev up to 1.6V
1.6	18-Apr-2003	thorpej	* Add a generic power management event API, defined in <sys/power.h>. Right now, only power switch state change events are supported. This is a work-in-progress. * Add support to sysmon for delivering power mangement events to userland. Add poll, kqueue, and read entry points to sysmon. * Adapt ACPI to use the new generic <sys/power.h> event types. This provides the kernel support for a forthcoming powerd(8) which can do nice things like gracefully shut the system down when an ACPI power button is pressed.
1.5	17-Apr-2003	thorpej	Start at a power management framework for sysmon. Right now we just provide some VERY basic support for power/sleep buttons and lid switches; if someone presses the power button, shut down the system semi-gracefully. Eventually, we will send events for all types of button/lid events down to a userland power management daemon, which will be able to define a separate policy for each button/switch.
1.4	10-Apr-2003	thorpej	Group things in this file a bit more logically.
1.3	05-Nov-2000	thorpej	branches: 1.3.2; 1.3.8; Split the envsys and watchdog parts of sysmon into their own files.
1.2	04-Nov-2000	thorpej	Add a watchog timer framework to the system monitor.
1.1	24-Jun-2000	thorpej	branches: 1.1.2; Add a clearing-house pseudo-device for system monitoring devices such as the LM78 and VT82C686A (and eventually ACPI). Multiple sensor devices can be hooked registered with `sysmon', and eventually sysmon will also handle hardware (and software) watchdog timers. Convert the `lm' and `viaenv' drivers to the new interface.
1.1.2.2	30-Jul-2000	bouyer	Pull up (requested by thorpej): lm_pnpbios.c 1.2->1.3 files 1.374->1.375 nslm7x.c 1.3->1.4 nslm7xvar.h 1.2->1.3 lm_isa.c 1.2->1.3 files.pci 1.96->1.97 viaenv.c 1.2->1.3 sysmon.c 1.1 sysmonvar.h 1.1 Add a clearing-house pseudo-device for system monitoring devices such as the LM78 and VT82C686A (and eventually ACPI). Multiple sensor devices can be hooked registered with `sysmon', and eventually sysmon will also handle hardware (and software) watchdog timers. Convert the `lm' and `viaenv' drivers to the new interface.
1.1.2.1	24-Jun-2000	bouyer	file sysmonvar.h was added on branch netbsd-1-5 on 2000-07-30 17:54:16 +0000
1.3.8.1	18-Sep-2001	fvdl	Various changes to make cloning devices possible: * Add an extra argument (struct vnode *) to VOP_OPEN. If it is not NULL, specfs will create a cloned (aliased) vnode during the call, and return it there. The caller should release and unlock the original vnode if a new vnode was returned. The new vnode is returned locked. Add a flag field to the cdevsw and bdevsw structures. DF_CLONING indicates that it wants a new vnode for each open (XXX is there a better way? devprop?) * If a device is cloning, always call the close entry point for a VOP_CLOSE. Also, rewrite cons.c to do the right thing with vnodes. Use VOPs rather then direct device entry calls. Suggested by mycroft@ Light to moderate testing done an i386 system (arch doesn't matter though, these are MI changes).
1.3.2.3	22-Nov-2000	bouyer	Sync with HEAD.
1.3.2.2	20-Nov-2000	bouyer	Update thorpej_scsipi to -current as of a month ago A i386 GENERIC kernel compiles without the siop, ahc and bha drivers (will be updated later). i386 IDE/ATAPI and ncr work, as well as sparc/esp_sbus. alpha should work as well (untested yet). siop, ahc and bha will be updated once I've updated the branch to current -current, as well as machine-dependant code.
1.3.2.1	05-Nov-2000	bouyer	file sysmonvar.h was added on branch thorpej_scsipi on 2000-11-20 11:43:12 +0000
1.8.2.4	21-Sep-2004	skrll	Fix the sync with head I botched.
1.8.2.3	18-Sep-2004	skrll	Sync with HEAD.
1.8.2.2	03-Aug-2004	skrll	Sync with HEAD
1.8.2.1	02-Jul-2003	darrenr	Apply the aborted ktrace-lwp changes to a specific branch. This is just for others to review, I'm concerned that patch fuziness may have resulted in some errant code being generated but I'll look at that later by comparing the diff from the base to the branch with the file I attempt to apply to it. This will, at the very least, put the changes in a better context for others to review them and attempt to tinker with removing passing of 'struct lwp' through the kernel.
1.10.16.8	24-Mar-2008	yamt	sync with head.
1.10.16.7	21-Jan-2008	yamt	sync with head
1.10.16.6	07-Dec-2007	yamt	sync with head
1.10.16.5	15-Nov-2007	yamt	sync with head.
1.10.16.4	27-Oct-2007	yamt	sync with head.
1.10.16.3	03-Sep-2007	yamt	sync with head.
1.10.16.2	30-Dec-2006	yamt	sync with head.
1.10.16.1	21-Jun-2006	yamt	sync with head.
1.11.16.1	13-Jul-2006	gdamore	Merge from HEAD.
1.11.8.1	11-Aug-2006	yamt	sync with head
1.11.4.1	09-Sep-2006	rpaulo	sync with head
1.12.10.2	17-May-2007	yamt	sync with head.
1.12.10.1	12-Mar-2007	rmind	Sync with HEAD.
1.13.4.1	11-Jul-2007	mjf	Sync with head.
1.13.2.4	12-Oct-2007	ad	Sync with head.
1.13.2.3	09-Oct-2007	ad	Sync with head.
1.13.2.2	15-Jul-2007	ad	Sync with head.
1.13.2.1	27-May-2007	ad	Sync with head.
1.15.8.2	09-Jan-2008	matt	sync with HEAD
1.15.8.1	06-Nov-2007	matt	sync with HEAD
1.15.6.5	21-Nov-2007	joerg	Sync with HEAD.
1.15.6.4	04-Nov-2007	jmcneill	Sync with HEAD.
1.15.6.3	26-Oct-2007	joerg	Sync with HEAD. Follow the merge of pmap.c on i386 and amd64 and move pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup code to restore CR4 before jumping back into kernel space as the large page option might cover that.
1.15.6.2	02-Oct-2007	joerg	Sync with HEAD.
1.15.6.1	03-Sep-2007	jmcneill	Sync with HEAD.
1.15.2.2	10-Sep-2007	skrll	Sync with HEAD.
1.15.2.1	03-Sep-2007	skrll	Sync with HEAD.
1.18.2.1	14-Oct-2007	yamt	sync with head.
1.19.2.3	21-Nov-2007	bouyer	Sync with HEAD
1.19.2.2	18-Nov-2007	bouyer	Sync with HEAD
1.19.2.1	13-Nov-2007	bouyer	Sync with HEAD
1.20.2.3	27-Dec-2007	mjf	Sync with HEAD.
1.20.2.2	08-Dec-2007	mjf	Sync with HEAD.
1.20.2.1	19-Nov-2007	mjf	Sync with HEAD.
1.22.6.1	02-Jan-2008	bouyer	Sync with HEAD
1.22.2.1	26-Dec-2007	ad	Sync with head.
1.23.6.3	05-Jun-2008	mjf	Sync with HEAD. Also fix build.
1.23.6.2	02-Jun-2008	mjf	Sync with HEAD.
1.23.6.1	03-Apr-2008	mjf	Sync with HEAD.
1.26.6.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.26.4.4	11-Aug-2010	yamt	sync with head.
1.26.4.3	11-Mar-2010	yamt	sync with head
1.26.4.2	20-Jun-2009	yamt	sync with head
1.26.4.1	04-May-2009	yamt	sync with head.
1.26.2.1	04-Jun-2008	yamt	sync with head
1.27.20.1	07-Jan-2011	matt	Allow kernel ticklers to turn themselves on at boot.
1.27.16.1	15-Feb-2014	matt	move sysmon_wdog_setmode prototype to sysmonvar.h
1.27.12.1	23-Jul-2009	jym	Sync with HEAD.
1.30.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.33.2.3	12-Jun-2011	rmind	sync with head
1.33.2.2	05-Mar-2011	rmind	sync with head
1.33.2.1	30-May-2010	rmind	sync with head
1.40.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.40.2.1	06-Jun-2011	jruoho	Sync with HEAD.
1.41.8.1	07-Dec-2014	martin	Pull up following revision(s) (requested by ozaki-r in ticket #1201): sys/kern/kern_ktrace.c: revision 1.166 sys/dev/isa/aps.c: revision 1.16 sys/dev/sysmon/sysmonvar.h: revision 1.45 sys/dev/ir/irframe_tty.c: revision 1.60 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.111-1.112 (patch) sys/dev/pci/pccbb.c: revision 1.207 sys/dev/wscons/wskbd.c: revision 1.135 sys/dev/usb/ohci.c: revision 1.254 sys/net/if_ecosubr.c: revision 1.41 sys/dev/pcmcia/btbc.c: revision 1.17 sys/arch/x86/x86/via_padlock.c: revision 1.23 sys/dev/sdmmc/sdmmc.c: revision 1.23 (patch) sys/dev/bluetooth/btkbd.c: revision 1.17 sys/dev/bluetooth/bcsp.c: revision 1.25 sys/arch/x86/pci/fwhrng.c: revision 1.8 sys/dev/ic/nslm7x.c: revision 1.61 share/man/man9/callout.9: revision 1.28 (patch) Replace callout_stop with callout_halt and ensure the callout is not running before destroying it.
1.41.2.2	16-Jan-2013	yamt	sync with (a bit old) head
1.41.2.1	30-Oct-2012	yamt	sync with head
1.43.2.2	03-Dec-2017	jdolecek	update from HEAD
1.43.2.1	25-Feb-2013	tls	resync with head
1.44.12.2	06-Apr-2015	snj	Pull up following revision(s) (requested by hannken in ticket #666): sys/dev/sysmon/sysmon_envsys.c: revision 1.129 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.114 sys/dev/sysmon/sysmonvar.h: revision 1.46 Add a counter of busy events and stop enqueueing more work if a device = is busy. Protect this counter with a new short time lock "sme_work_mtx" and keep "sme_mtx" as long time lock. Removes a deadlock where an active event holds "sme_mtx", the callout "sme_events_check" blocks on "sme_mtx" and callout processing stops.
1.44.12.1	01-Dec-2014	martin	Pull up following revision(s) (requested by ozaki-r in ticket #279): sys/kern/kern_ktrace.c: revision 1.166 sys/dev/isa/aps.c: revision 1.16 sys/dev/sysmon/sysmonvar.h: revision 1.45 sys/dev/ir/irframe_tty.c: revision 1.60 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.111 sys/dev/sysmon/sysmon_envsys_events.c: revision 1.112 sys/dev/pci/pccbb.c: revision 1.207 sys/dev/wscons/wskbd.c: revision 1.135 sys/dev/usb/ohci.c: revision 1.254 sys/net/if_ecosubr.c: revision 1.41 sys/dev/pcmcia/btbc.c: revision 1.17 sys/arch/x86/x86/via_padlock.c: revision 1.23 sys/dev/sdmmc/sdmmc.c: revision 1.23 sys/dev/bluetooth/btkbd.c: revision 1.17 sys/dev/bluetooth/bcsp.c: revision 1.25 sys/arch/x86/pci/fwhrng.c: revision 1.8 sys/dev/ic/nslm7x.c: revision 1.61 share/man/man9/callout.9: revision 1.28 Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. Discussed with martin@ and riastradh@. Make it clear that we should use not callout_stop but callout_halt before callout_destroy Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. In this case, we need to pass an interlock to callout_halt to wait for the callout complete. Reviewed by riastradh@. Kill sme_callout_mtx and use sme_mtx instead We can use sme_mtx for the callout as well. Actually we should do so because sme_events_list and some other data that are touched in the callout should be protected by sme_mtx, not sme_callout_mtx. Discussed with riastradh@ in http://mail-index.netbsd.org/tech-kern/2014/11/11/msg017956.html Replace callout_stop with callout_halt In order to call callout_destroy for a callout safely, we have to ensure the function of the callout is not running and pending. To do so, we should use callout_halt, not callout_stop. In this case, we need to pass an interlock to callout_halt to wait for the callout complete. And also we make sure that SME_CALLOUT_INITIALIZED is unset before calling callout_halt to prevent the callout from calling callout_schedule. This is the same as what we did in sys/netinet6/mld6.c@1.61. Reviewed by riastradh@.
1.45.2.2	06-Jun-2015	skrll	Sync with HEAD
1.45.2.1	06-Apr-2015	skrll	Sync with HEAD
1.49.10.1	23-Sep-2017	snj	Pull up following revision(s) (requested by pgoyette in ticket #281): sys/dev/sysmon/sysmon_envsys.c: 1.140-1.141 sys/dev/sysmon/sysmon_envsys_events.c: 1.120-1.121 sys/dev/sysmon/sysmonvar.h: 1.50 Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d". Don't call rnd_detach_source() in sme_remove_event() which is called from sme_event_unregister_all(). Instead, call rnd_detach_source() in sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach() before sme_event_unregister_sensor(). Each sensor(envsys_data) has each rnd_src, but some sme_events point to the same rnd_src in a sensor. Calling rnd_detach_souce() twice with the same rnd_src brokes a reference count in rnd_src. OK'd by pgoyette@. -- Improve tracking of the state of an event's callout, and protect all queries or modifications of the state with the sme_mtx mutex. Detach the rndsrc before re-attaching it (with potentially new values). Clean up some lock-ordering issues. And a couple of KNF issues for good measure! Should address PR kern/52533

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