Re: [PATCH-next v3 0/3] cgroup/cpuset: Support multiple destination cpusets for cpuset_*attach()

[Waiman Long <longman@redhat.com>]

On 7/16/26 3:42 PM, Tejun Heo wrote:
> Hello,
>
> On Sun, Jul 12, 2026 at 07:55:07PM -0400, Waiman Long wrote:
>> Michal Koutný (1):
>>    selftests/cgroup: Add test for cpuset affinity on controller disable
>>
>> Waiman Long (2):
>>    cgroup/cpuset: Support multiple destination cpusets for
>>      cpuset_*attach()
>>    cgroup/cpuset: Handle the special case of non-moving tasks in
>>      cpuset_can_attach()
> Applied 1-3 to cgroup/for-7.3.
>
> While applying, fixed a comment typo in patch 1:
>
> -			else if (cs->dl_bw_cpu >= 0) /* && cacnel */
> +			else if (cs->dl_bw_cpu >= 0) /* && cancel */
>
> The following selftest issues remain. Let's address them with follow-up
> patches:
>
> - cpu_set_equal() iterates sizeof(mask) bytes rather than bits, so only
>    CPUs 0-7 are compared, and the assert compares a byte count against
>    CPU_SETSIZE bits so it always holds.
>
> - thread_b doesn't wait for thread_a before advancing test_phase to
>    AFFINITY_THREADS_READY, so the main thread can read affinity_a_before
>    before thread_a has written it.
>
> - On a machine which doesn't have both CPUs 0 and 1 online, the test
>    fails instead of skipping.

Will fix the selftest in a follow-up patch.

Cheers,
Longman