Add rump-based test cases for threadpool(9).

branches: 1.6.2; 1.6.4;
Add simple test for workqueue(9)

branches: 1.5.38;
elementary tests for rump sigmodels

Add some tests for lock errors. Notably, some of them fare nicely
with just the pthread consistency checks (which are enabled by
default in rumpuser), but others require real LOCKDEBUG.

add a vm allocator test which tests that:
* RUMP_MEMLIMIT works
* allocating memory with PR_NOWAIT will fail immediately if no memory
is available and PR_WAITOK will wait for memory to be available

need bsd.own.mk to avoid the "NETBSDSRCDIR is nothing" syndrome

Add some kernel namespace (i.e. _KERNEL) helpers for regression tests.

add a vm allocator test which tests that:
* RUMP_MEMLIMIT works
* allocating memory with PR_NOWAIT will fail immediately if no memory
is available and PR_WAITOK will wait for memory to be available

Tweak the March 14th change to make page waits interlocked by pg->interlock.
Remove unneeded changes and only deal with the PQ_WANTED flag, to exclude
possible bugs.

Catch up with reality.

UVM locking changes, proposed on tech-kern:

- Change the lock on uvm_object, vm_amap and vm_anon to be a RW lock.
- Break v_interlock and vmobjlock apart. v_interlock remains a mutex.
- Do partial PV list locking in the x86 pmap. Others to follow later.

branches: 1.5.42;
Rename slightly misleading KTHREAD_JOINABLE to KTHREAD_MUSTJOIN.

vmobjlock is now a pointer to kmutex_t. use it as one.

branches: 1.3.4;
hold object lock across page unbusy

vm object must be locked during page allocation.

Add some kernel namespace (i.e. _KERNEL) helpers for regression tests.

workqueue(9) tests: Add test for PR kern/57574.

XXX pullup-10
XXX pullup-9
XXX pullup-8

branches: 1.8.2; 1.8.10;
Add a test case that exercises repeated sceduling and cancelling of a job,
with periodic dropping of the interlock.

Add rump-based test cases for threadpool(9).

branches: 1.6.2; 1.6.4;
Add a test case for workqueue_wait

Add declaration. build fix

sorry, I forgot to commit this file.

branches: 1.4.38;
elementary tests for rump sigmodels

Add some tests for lock errors. Notably, some of them fare nicely
with just the pthread consistency checks (which are enabled by
default in rumpuser), but others require real LOCKDEBUG.

add a vm allocator test which tests that:
* RUMP_MEMLIMIT works
* allocating memory with PR_NOWAIT will fail immediately if no memory
is available and PR_WAITOK will wait for memory to be available

Add some kernel namespace (i.e. _KERNEL) helpers for regression tests.

Add some tests for lock errors. Notably, some of them fare nicely
with just the pthread consistency checks (which are enabled by
default in rumpuser), but others require real LOCKDEBUG.

Move proc_lock into the data segment. It was dynamically allocated because
at the time we had mutex_obj_alloc() but not __cacheline_aligned.

elementary tests for rump sigmodels

Rename slightly misleading KTHREAD_JOINABLE to KTHREAD_MUSTJOIN.

Add some kernel namespace (i.e. _KERNEL) helpers for regression tests.

s/shold/should/

branches: 1.5.2;
Fix a silly bug the "cancel thrash" test: the exit condition for the
job was never set, and so if the job actually got started before the
cancellation request came in, it would never finish and the cancellation
request would just hang forever.

Should address a spurious automated test failure reported by kre@.

Add a test case that exercises repeated sceduling and cancelling of a job,
with periodic dropping of the interlock.

- De-opaque'ify struct threadpool_job.
- De-_t'ify all of the structure types.

No functional chage, no ABI change (verified with old rump unit test
before and after new librump.so).

Per Taylor's request.

branches: 1.2.2;
Include some non-critical-but-still-for-correctness lines of code
in the cancellation unit test. (I could have sworn I actually typed
these lines, no really...)

Add rump-based test cases for threadpool(9).

remove sys/simplelock.h (straggler)

branches: 1.3.6;
tsleep(9) no more.

branches: 1.2.2;
Rename slightly misleading KTHREAD_JOINABLE to KTHREAD_MUSTJOIN.

Add some kernel namespace (i.e. _KERNEL) helpers for regression tests.

workqueue(9) tests: Fix mistake in rev. 1.9.

Somehow, despite manually verifying a build/install/test of every
revision in my patch series, I managed to commit the wrong version of
the file for what became rev. 1.9, so the test was just broken when
it went in and remained broken in the commit where I fixed the real
bug and removed the xfail marker on the test.

PR kern/5757

XXX pullup-10
XXX pullup-9
XXX pullup-8

workqueue(9) tests: Add test for PR kern/57574.

XXX pullup-10
XXX pullup-9
XXX pullup-8

workqueue(9) tests: Destroy struct work immediately on entry.

workqueue(9) tests: Nix trailing whitespace.

branches: 1.6.2; 1.6.8; 1.6.16;
Fix build

Add a test case for workqueue_wait

Functionalize some routines to add new tests easily (NFC)

Fix a race condition on taking the mutex

The workqueue worker can take the mutex before the tester tries to take it after
calling workqueue_enqueue. If it happens, the worker calls cv_broadcast before
the tester calls cv_timedwait and the tester will wait until the cv timed out

Take the mutex before calling workqueue_enqueue so that the tester surely calls
cv_timedwait before the worker calls cv_broadcast.

The fix stabilizes the test, t_workqueue/workqueue1.

Tweak use of cv_timedwait

- Handle its return value
- Specify more appropriate time-out periods (2 ticks is too short)

Add simple test for workqueue(9)