| commit | e9c8431185d6c406887190519f6dbdd112641686 | |
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | |
| Tue, 15 Sep 2009 12:43:03 +0000 (15 14:43 +0200) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Tue, 15 Sep 2009 14:01:05 +0000 (15 16:01 +0200) | ||
| tree | 3c502201451df7bbfcd653fee940fcb40bdaaeb6 | treesnapshot (tar.gz zip) |
| parent | 5f3edc1b1ead6d9bd45a85c551f44eff8fe76b9f | commitdiff |
sched: Add TASK_WAKING
We're going to want to drop rq->lock in try_to_wake_up() for a
longer period of time, however we also want to deal with concurrent
waking of the same task, which is currently handled by holding
rq->lock.
So introduce a new TASK state, namely TASK_WAKING, which indicates
someone is already waking the task (other wakers will fail p->state
& state).
We also keep preemption disabled over the whole ttwu().
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
We're going to want to drop rq->lock in try_to_wake_up() for a
longer period of time, however we also want to deal with concurrent
waking of the same task, which is currently handled by holding
rq->lock.
So introduce a new TASK state, namely TASK_WAKING, which indicates
someone is already waking the task (other wakers will fail p->state
& state).
We also keep preemption disabled over the whole ttwu().
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| include/linux/sched.h | diffblobblamehistory | |
| kernel/sched.c | diffblobblamehistory |