sched: Remove pointless preemption disable in sched_submit_work()

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Neither wq_worker_sleeping() nor io_wq_worker_sleeping() require to be invoked
with preemption disabled:

  - The worker flag checks operations only need to be serialized against
    the worker thread itself.

  - The accounting and worker pool operations are serialized with locks.

which means that disabling preemption has neither a reason nor a
value. Remove it and update the stale comment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Link: https://lkml.kernel.org/r/8735pnafj7.ffs@tglx

...

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Thomas Gleixner 2021-09-29 11:37:32 +02:00 • committed by Peter Zijlstra

parent 670721c7bd

commit b945efcdd0

1 changed files with 2 additions and 8 deletions

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kernel/sched/core.c

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