Messages in this thread Patch in this message | | | Date | Wed, 04 Oct 2023 09:42:03 -0000 | From | "tip-bot2 for Ingo Molnar" <> | Subject | [tip: sched/core] sched/core: Update stale comment in try_to_wake_up() |
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The following commit has been merged into the sched/core branch of tip:
Commit-ID: bdf85bec2b1ea852daf415cf6f1c9ef7d584c8c5 Gitweb: https://git.kernel.org/tip/bdf85bec2b1ea852daf415cf6f1c9ef7d584c8c5 Author: Ingo Molnar <mingo@kernel.org> AuthorDate: Wed, 04 Oct 2023 11:33:36 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Wed, 04 Oct 2023 11:34:34 +02:00
sched/core: Update stale comment in try_to_wake_up()
The following commit:
9b3c4ab3045e ("sched,rcu: Rework try_invoke_on_locked_down_task()")
... renamed try_invoke_on_locked_down_task() to task_call_func(), but forgot to update the comment in try_to_wake_up().
But it turns out that the smp_rmb() doesn't live in task_call_func() either, it was moved to __task_needs_rq_lock() in:
91dabf33ae5d ("sched: Fix race in task_call_func()")
Fix that now.
Also fix the s/smb/smp typo while at it.
Reported-by: Zhang Qiao <zhangqiao22@huawei.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20230731085759.11443-1-zhangqiao22@huawei.com --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 65e10ac..f5783cb 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4237,7 +4237,7 @@ int try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) * Pairs with the LOCK+smp_mb__after_spinlock() on rq->lock in * __schedule(). See the comment for smp_mb__after_spinlock(). * - * A similar smb_rmb() lives in try_invoke_on_locked_down_task(). + * A similar smp_rmb() lives in __task_needs_rq_lock(). */ smp_rmb(); if (READ_ONCE(p->on_rq) && ttwu_runnable(p, wake_flags))
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