UFS/LFS dirhash:
- Enable UFS_DIRHASH if the architecture or kernel model specific config
file can use 128MB of RAM or more.
- Remove experimental tag from UFS_DIRHASH; it's been with RUMP kernel
and by a number of NetBSD developers for years.
- Add LFS_DIRHASH if LFS was enabled.
- Be somewhat consistent with FS options order.

PMAP_DEBUG has been deleted on arm

branches: 1.60.4; 1.60.14;
clean up COMPAT_* options for native netbsd code:
- new series of files that are useful for saying "i want everything
since netbsd 1.4", etc.
- use the fact COMPAT_* options have future dependancies to remove
many redundant options.

removes about 3000 lines total across kernel configuration files.
tested about 30 random kernels in the changed list.

Remove TCP_COMPAT_42 from the config files. Pass 2.

PR kern/51208
Add DISKLABEL_EI option (and also FFS_EI if missing), commented out except for
ALL on amd64 and i386.

branches: 1.57.2; 1.57.4;
Remove the KMEMSTATS option. It no longer exists.

branches: 1.56.2;
Systematize (and in many cases, fix) the comments on options COMPAT_NN.

There are quite a few configs that are missing some COMPAT_NN options
in ways that don't make sense; this should probably get cleaned up
too, but for the time being I've not added or removed anything.

Reorganize symbol table embedding. The existing option SYMTAB_SPACE is
replaced by the make option COPY_SYMTAB set to any value. The copy of
the symbol table is no longer put into a buffer in kern_ksyms.o, but a
small helper object. This object is build first with a dummy size, then
the kernel is linked to compute the real dimension of the symbol table
buffer. After that, the helper object is rebuild and the kernel linked
again.

Add "options COMPAT_70" to all kernel configuration files that
already had "options COMPAT_60".

Add COMPAT_NETBSD32 to more kernels (we have too many)

"internally consistency checks" -> "internal consistency checks"

branches: 1.51.4;
G/C PFIL_HOOKS from the kernel configs.

branches: 1.50.2;
remove obsolete networking options

Under FAST_IPSEC, IPSEC_ESP is mandatory; GC it.

Retire OSI network stack. OK core@

Add "options COMPAT_60" to all kernel configuration files
that already had "options COMPAT_50".

branches: 1.46.2;
Add PUFFS, putter and fss.

Bump up SYMTAB_SPACE

Remove obsolete SysV semaphores limit options (SEMMNI, SEMMNS, and SEMUME).

WABPL is no longer considered experimental (has not been for some time)
so update its comment in config files.

branches: 1.42.2;

The rnd pseudo-device is not really optional, because it is in the same
source file as the entropy-pool code itself. Move it to std. This
will be cleaned up more when I split the sources up as they should be.

This fixes build breaks on several ports. Thanks to Havard Eidnes for
pointing them out.

branches: 1.41.2;
dependant -> dependent

merge the bouyer-quota2 branch. This adds a new on-disk format
to store disk quota usage and limits, integrated with ffs
metadata. Usage is checked by fsck_ffs (no more quotacheck)
and is covered by the WAPBL journal. Enabled with kernel
option QUOTA2 (added where QUOTA was enabled in kernel config files),
turned on with tunefs(8) on a per-filesystem
basis. mount_mfs(8) can also turn quotas on.

See http://mail-index.netbsd.org/tech-kern/2011/02/19/msg010025.html
for details.

Bump SYMTAB_SPACE for the many other evbarm kernels that also need it increased.

Remove trailing spaces.

branches: 1.37.2; 1.37.4;
Bump SYMTAB_SPACE.

Remove unused count from pseudo-device md.

branches: 1.35.4;
Remove the portalfs kernel file system driver. Replace mount_portal(8)
with a version based on puffs. User functionality remains the same.

add options COMPAT_50 to all evbarm boards.

Increase SYMTABLE_SIZE so it'll compile again.

Remove SHMMAXPGS from all kernel configs. Dynamically compute the
initial limit as 1/4 of the physical memory. Ensure the limit is at
least 1024 pages, the old default on most platforms.

branches: 1.31.4;
Remove softdep, pass 1. We are focused on improving journalling.

Proposed on tech-kern@.

Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

branches: 1.29.2;
Add "options WAPBL" to standard GENERIC/INSTALL type configs.

branches: 1.28.4;
Add options COMPAT_40 to files which have options COMPAT_30.

branches: 1.27.6; 1.27.8; 1.27.10; 1.27.12;
Remove arm support for IPKDB.

It hasn't worked since arm was broken out from arm32 in Jan 2001, and
no-one has noticed or cared to fix it.

More kernels SYMTAB_SPACE increased.

branches: 1.25.28; 1.25.32; 1.25.38; 1.25.46;
PR/34283: Gene ENonymous: Add IPFILTER_LOOKUP to the default kernel options
Also remove CCITT,NS,NIP

branches: 1.24.2;
Remove 'count' argument for pseudo-devices that ignore it
(vnd, bpfilter, ppp, gif, gre, tun, sl, strip, faith, stf).

bpfilter doesn't accept count anymore.

branches: 1.22.2; 1.22.4; 1.22.6;
Adjust comments for options FFS_NO_SNAPSHOT.

XXX: This option should be mentioned in options(4).

Enable ptyfs by default on the non-install and non small/tiny/ramdisk kernels

64 bit inode changes.

revert "defflag VMSWAP" changes for now.
there seems to be far more people who don't want to edit
their kernel config files than i thought.

add "options VMSWAP" to non INSTALL kernels.

Add (commented out) IPSEC_NAT_T option.

branches: 1.16.2; 1.16.4;
Add COMPAT_20 (and COMPAT_16 in some cases) to kernel config files
that didn't have those options but had other earlier compat options.

Invert FFS_SNAPSHOT to FFS_NO_SNAPSHOT

Add 'option FFS_SNAPSHOT' to most of the config files.
Commented out for kernels that appear to hace space constraints.

branches: 1.13.4; 1.13.6;
Add COMPAT_BSDPTY to the rest of the config files.

IPv4 PIM support, based on a submission from Pavlin Radoslavov posted on
tech-net@

Set CPUFLAGS not COPTS

Add "options SYSCTL_INCLUDE_DESCR" to a lot of configs, but commented
out in most of them.

branches: 1.9.2;
Uppercase CPU, plural is CPUs.

Add COMPAT_16 to most arm based kernels. Mainly in preperation for doing
SA_SIGINFO work.

Default all builds to not have debug information. Significantly
reduces disk space needed for a make release, especially if using
dwarf2 debug.

branches: 1.6.2;
Add ksyms.

correct physical/virtual address handling

- to identify device instance, using hardware address.
- when console accesses device, using statically mapped address.
- when tty accesses device, using handler given by bus_space_map().

delete unneed pmap for LED and Clock

add NAPPI_MD config file

enable USERCONF by default; it's small and extremely useful to have available.

branches: 1.1.2; 1.1.4; 1.1.6;
add configuration file
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