sched_ext: Use READ_ONCE/WRITE_ONCE in cmask word ops and drop _RACY variants

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The cmask ops can operate on BPF-arena cmasks which BPF programs may read
and write concurrently. The _RACY op variants existed to make such lockless
reads explicit but this turned out to be too restrictive. Mark the word
accesses in all the two-cmask ops with READ_ONCE/WRITE_ONCE instead and drop
the _RACY variants.

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

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Tejun Heo 2026-07-09 12:06:10 -10:00

parent ad45691d8c

commit 05e72aeaaa

2 changed files with 10 additions and 47 deletions

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55

kernel/sched/ext/cid.c

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2

kernel/sched/ext/cid.h

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