Re: [PATCH v6 4/8] cgroup/cpuset: Set isolated_cpus_updating only if isolated_cpus is changed

From: Frederic Weisbecker

Date: Thu Feb 26 2026 - 10:28:50 EST


Le Sat, Feb 21, 2026 at 01:54:14PM -0500, Waiman Long a écrit :
> As cpuset is updating HK_TYPE_DOMAIN housekeeping mask when there is
> a change in the set of isolated CPUs, making this change is now more
> costly than before. Right now, the isolated_cpus_updating flag can be
> set even if there is no real change in isolated_cpus. Put in additional
> checks to make sure that isolated_cpus_updating is set only if there
> is a real change in isolated_cpus.
>
> Reviewed-by: Chen Ridong <chenridong@xxxxxxxxxxxxxxx>
> Signed-off-by: Waiman Long <longman@xxxxxxxxxx>

Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx>

--
Frederic Weisbecker
SUSE Labs