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sched_ext: Don't kick CPUs running higher classes
authorTejun Heo <tj@kernel.org>
Wed, 22 Oct 2025 20:56:27 +0000 (10:56 -1000)
committerTejun Heo <tj@kernel.org>
Wed, 22 Oct 2025 21:42:14 +0000 (11:42 -1000)
commita9c1fbbd6dadbaa38c157a07d5d11005460b86b9
tree8118ede9bec40ca7f07799a461b0c27a90d38362tree | snapshot
parent2dbbdeda77a61b39dc4a34dfce873907cfea2c4bcommit | diff
sched_ext: Don't kick CPUs running higher classes

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>
kernel/sched/ext.c diff | blob | blame | history
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