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authorjeff <jeff@FreeBSD.org>2008-04-25 05:18:50 +0000
committerjeff <jeff@FreeBSD.org>2008-04-25 05:18:50 +0000
commit14b586bf964970197e12228d127a713b7db7abcb (patch)
treeae275695b8c2f48f9a96c11fe4405ef85fe1bc79 /sys/kern/sched_4bsd.c
parent3cd35a205135ce8a15349a035286650c3452cafd (diff)
downloadFreeBSD-src-14b586bf964970197e12228d127a713b7db7abcb.zip
FreeBSD-src-14b586bf964970197e12228d127a713b7db7abcb.tar.gz
- Add an integer argument to idle to indicate how likely we are to wake
from idle over the next tick. - Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are suspended in cpu specific states. This function can fail and cause the scheduler to fall back to another mechanism (ipi). - Implement support for mwait in cpu_idle() on i386/amd64 machines that support it. mwait is a higher performance way to synchronize cpus as compared to hlt & ipis. - Allow selecting the idle routine by name via sysctl machdep.idle. This replaces machdep.cpu_idle_hlt. Only idle routines supported by the current machine are permitted. Sponsored by: Nokia
Diffstat (limited to 'sys/kern/sched_4bsd.c')
-rw-r--r--sys/kern/sched_4bsd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/sched_4bsd.c b/sys/kern/sched_4bsd.c
index ed5cf62..cefe4ac 100644
--- a/sys/kern/sched_4bsd.c
+++ b/sys/kern/sched_4bsd.c
@@ -1443,7 +1443,7 @@ sched_idletd(void *dummy)
mtx_assert(&Giant, MA_NOTOWNED);
while (sched_runnable() == 0)
- cpu_idle();
+ cpu_idle(0);
mtx_lock_spin(&sched_lock);
mi_switch(SW_VOL | SWT_IDLE, NULL);
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