sched_ext: Use SCX_TASK_READY test instead of tryget_task_struct() during class switch

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ddf7233fca ("sched/ext: Fix invalid task state transitions on class
switch") added tryget_task_struct() test during scx_enable()'s class
switching loop. The reason for the addition was to avoid enabling tasks which
skipped prep in the previous loop due to being dead.

While tryget_task_struct() does work for this purpose as tasks that fail
tryget always will fail it, it's a bit roundabout. A more direct way is
testing whether the task is in READY state. Switch to testing SCX_TASK_READY
directly.

Cc: Andrea Righi <arighi@nvidia.com>
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Tejun Heo 2025-10-28 11:38:34 -10:00

parent dcb938c453

commit b7d4b28db7

1 changed files with 1 additions and 3 deletions

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kernel/sched/ext.c

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