cpuset: introduce cpus_excl_conflict and mems_excl_conflict helpers

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This patch adds cpus_excl_conflict() and mems_excl_conflict() helper
functions to improve code readability and maintainability. The exclusive
conflict checking follows these rules:

1. If either cpuset has the 'exclusive' flag set, their user_xcpus must
   not have any overlap.
2. If neither cpuset has the 'exclusive' flag set, their
   'cpuset.cpus.exclusive' (only for v2) values must not intersect.
3. The 'cpuset.cpus' of one cpuset must not form a subset of another
   cpuset's 'cpuset.cpus.exclusive'.

Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Chen Ridong 2025-09-17 06:04:49 +00:00 • committed by Tejun Heo

parent c5866c9a00

commit 8daab66eb3

1 changed files with 44 additions and 30 deletions

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kernel/cgroup/cpuset.c

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