sched_ext: Fix rq lock state in hotplug ops

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The ops.cpu_online() and ops.cpu_offline() callbacks incorrectly assume
that the rq involved in the operation is locked, which is not the case
during hotplug, triggering the following warning:

  WARNING: CPU: 1 PID: 20 at kernel/sched/sched.h:1504 handle_hotplug+0x280/0x340

Fix by not tracking the target rq as locked in the context of
ops.cpu_online() and ops.cpu_offline().

Fixes: 18853ba782 ("sched_ext: Track currently locked rq")
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Tested-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Andrea Righi 2025-04-28 23:43:20 +02:00 • committed by Tejun Heo

parent e7dcd1304b

commit e38be1c764

1 changed files with 2 additions and 2 deletions

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kernel/sched/ext.c

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