sched/ext: Implement cgroup_set_idle() callback

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Implement the missing cgroup_set_idle() callback that was marked as a
TODO. This allows BPF schedulers to be notified when a cgroup's idle
state changes, enabling them to adjust their scheduling behavior
accordingly.

The implementation follows the same pattern as other cgroup callbacks
like cgroup_set_weight() and cgroup_set_bandwidth(). It checks if the
BPF scheduler has implemented the callback and invokes it with the
appropriate parameters.

Fixes a spelling error in the cgroup_set_bandwidth() documentation.

tj: s/scx_cgroup_rwsem/scx_cgroup_ops_rwsem/ to fix build breakage.

Signed-off-by: zhidao su <soolaugust@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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This commit is contained in:

zhidao su 2025-10-11 15:16:51 +08:00 • committed by Tejun Heo

parent bd7143e74e

commit 347ed2d566

3 changed files with 28 additions and 2 deletions

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1

include/linux/sched/ext.h

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16

kernel/sched/ext.c

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13

kernel/sched/ext_internal.h

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