cgroup/cpuset: Inherit parent's load balance state in v2

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[ Upstream commit c8c926200c ]

Since commit f28e22441f ("cgroup/cpuset: Add a new isolated
cpus.partition type"), the CS_SCHED_LOAD_BALANCE bit of a v2 cpuset
can be on or off. The child cpusets of a partition root must have the
same setting as its parent or it may screw up the rebuilding of sched
domains. Fix this problem by making sure the a child v2 cpuset will
follows its parent cpuset load balance state unless the child cpuset
is a new partition root itself.

Fixes: f28e22441f ("cgroup/cpuset: Add a new isolated cpus.partition type")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Waiman Long 2023-06-27 10:35:00 -04:00 • committed by Greg Kroah-Hartman

parent 590b45e5cd

commit 8199a46af2

1 changed files with 30 additions and 3 deletions

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kernel/cgroup/cpuset.c

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