On 2022-11-02 09:20:48 [-0400], Waiman Long wrote: Hi, > Yes, that is a known issue which is especially problematic when cgroup v2 is > used. That is why I have recently posted a set of patches to enable > persistent user requested affinity and they have been merged into tip: > > 851a723e45d1 sched: Always clear user_cpus_ptr in do_set_cpus_allowed() > da019032819a sched: Enforce user requested affinity > 8f9ea86fdf99 sched: Always preserve the user requested cpumask > 713a2e21a513 sched: Introduce affinity_context > 5584e8ac2c68 sched: Add __releases annotations to affine_move_task() > They should be able to address the problem that you list here. Please let me > know if there are still problem remaining. Thank you. This solves the most pressing issue. The CPU-mask is still reset upon activation of the cpuset controller. This is due to the set_cpus_allowed_ptr() in cpuset_attach(). Is is possible to push these patches stable? > Thanks, > Longman Sebastian
