cgroup/cpuset: Eliminate unncessary sched domains rebuilds in hotplug

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It was found that some hotplug operations may cause multiple
rebuild_sched_domains_locked() calls. Some of those intermediate calls
may use cpuset states not in the final correct form leading to incorrect
sched domain setting.

Fix this problem by using the existing force_rebuild flag to inhibit
immediate rebuild_sched_domains_locked() calls if set and only doing
one final call at the end. Also renaming the force_rebuild flag to
force_sd_rebuild to make its meaning for clear.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Waiman Long 2024-08-04 21:30:17 -04:00 • committed by Tejun Heo

parent 311a1bdc44

commit ff0ce721ec

1 changed files with 17 additions and 16 deletions

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kernel/cgroup/cpuset.c

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