sched_ext: Don't kick CPUs running higher classes

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commit a9c1fbbd6d upstream.

When a sched_ext scheduler tries to kick a CPU, the CPU may be running a
higher class task. sched_ext has no control over such CPUs. A sched_ext
scheduler couldn't have expected to get access to the CPU after kicking it
anyway. Skip kicking when the target CPU is running a higher class.

Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Tejun Heo 2026-01-29 09:25:45 +00:00 • committed by Greg Kroah-Hartman

parent edb9fab1b7

commit 664e78f2d4

1 changed files with 8 additions and 3 deletions

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kernel/sched/ext.c

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