diff options
| author | Ingo Molnar <mingo@elte.hu> | 2005-01-07 21:49:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@evo.osdl.org> | 2005-01-07 21:49:52 -0800 |
| commit | a298f2eefe18888907e9feffb477b66843912d10 (patch) | |
| tree | 9bc83a440552e8a9c91cd1590b2db0c14355eb30 /include/linux | |
| parent | f6aaca35e0aa4c7e3de79ace85f7380f4d451648 (diff) | |
[PATCH] sched: add cond_resched_softirq()
It adds cond_resched_softirq() which can be used by _process context_
softirqs-disabled codepaths to preempt if necessary. The function will
enable softirqs before scheduling. (Later patches will use this
primitive.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index c69d26d50fb0..fa3cb372c554 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1069,9 +1069,12 @@ static inline int need_resched(void) * cond_resched() and cond_resched_lock(): latency reduction via * explicit rescheduling in places that are safe. The return * value indicates whether a reschedule was done in fact. + * cond_resched_lock() will drop the spinlock before scheduling, + * cond_resched_softirq() will enable bhs before scheduling. */ extern int cond_resched(void); extern int cond_resched_lock(spinlock_t * lock); +extern int cond_resched_softirq(void); /* * Does a critical section need to be broken due to another |