sched: Split DEQUEUE_SLEEP from deactivate_task()

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As a preparation for dequeue_task() failing, and a second code-path
needing to take care of the 'success' path, split out the DEQEUE_SLEEP
path from deactivate_task().

Much thanks to Libo for spotting and fixing a TASK_ON_RQ_MIGRATING
ordering fail.

Fixed-by: Libo Chen <libo.chen@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Tested-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lkml.kernel.org/r/20240727105029.086192709@infradead.org

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This commit is contained in:

Peter Zijlstra 2024-05-23 10:48:09 +02:00

parent fab4a808ba

commit e8901061ca

2 changed files with 27 additions and 10 deletions

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23

kernel/sched/core.c

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14

kernel/sched/sched.h

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