ce099b4099
Remove clause 3 and 4 from TNF licenses
2008-04-28 20:22:51 +00:00
4c7ba24481
Add MI code to support in-kernel preemption. Preemption is deferred by
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one of the following:
- Holding kernel_lock (indicating that the code is not MT safe).
- Bracketing critical sections with kpreempt_disable/kpreempt_enable.
- Holding the interrupt priority level above IPL_NONE.
Statistics on kernel preemption are reported via event counters, and
where preemption is deferred for some reason, it's also reported via
lockstat. The LWP priority at which preemption is triggered is tuneable
via sysctl.
2008-04-28 15:36:01 +00:00
0664a0459b
Start detangling lock.h from intr.h. This is likely to cause short term
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breakage, but the mess of dependencies has been regularly breaking the
build recently anyhow.
2008-01-04 21:17:40 +00:00
8134491688
Use new style memory barriers.
2007-12-20 21:09:00 +00:00
3b271ff768
Merge from vmlocking.
2007-11-06 18:02:43 +00:00
5c2240bb95
- Increase default number of trace buffers to 10000.
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- New options:
-f Trace only by calling functions.
-m Merge call sites within unique functions.
-M Merge lock addresses within unique objects.
2007-07-14 13:30:43 +00:00
029f4f9cd7
splstatclock, spllock -> splhigh
2007-06-15 20:17:07 +00:00
53524e44ef
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
2007-03-04 05:59:00 +00:00
087fdb9080
Count the number of CPUs at boot and stash in 'ncpu'. Eventually should
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have each CPU register at attach, so we can figure out the topology for
the scheduler.
2007-02-15 20:32:47 +00:00
b07ec3fc38
Merge newlock2 to head.
2007-02-09 21:55:00 +00:00
9f07c24ec6
lockstat: improve reporting slightly, and fix a bug where the command
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could spin while resorting lists.
2006-12-25 11:57:40 +00:00
168cd830d2
__unused removal on arguments; approved by core.
2006-11-16 01:32:37 +00:00
4a09170d84
Use __unused in function arguments where appropiate. (hi christos)
2006-10-12 06:56:47 +00:00
5c5838e690
- Add a couple of XXX comments.
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- lb->lb_cpu doesn't need to be filled in lockstat_event().
2006-09-07 01:03:02 +00:00
beafae096b
Add the 'lockstat' driver, which collects basic information about lock events.
2006-09-07 00:20:28 +00:00
martin