mirrors
/
anolis-cloud-kernel
mirror of https://gitee.com/anolis/cloud-kernel.git
8
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cgroup/cpuset: Make cpuset_attach_task() skip subpartitions CPUs for top_cpuset 

ANBZ: #13018

commit 7e27cb6ad4 upstream

It is found that attaching a task to the top_cpuset does not currently
ignore CPUs allocated to subpartitions in cpuset_attach_task(). So the
code is changed to fix that.

Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
[accommodate the 5.10 codebase]
Signed-off-by: Yi Tao <escape@linux.alibaba.com>
Reviewed-by: Tianchen Ding <dtcccc@linux.alibaba.com>
Link: https://gitee.com/anolis/cloud-kernel/pulls/4343
This commit is contained in:
Yi Tao 2024-12-23 11:52:04 +08:00 committed by 小龙
parent 2b6fa0b3ca
commit 63c90de544
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
kernel/cgroup/cpuset.c
View File

@ -2307,7 +2307,8 @@ static void cpuset_attach(struct cgroup_taskset *tset)
/* prepare for attach */
if (cs == &top_cpuset) {
cpumask_copy(cpus_attach, cpu_possible_mask);
cpumask_andnot(cpus_attach, cpu_possible_mask,
cs->subparts_cpus);
wilds_cpus_allowed(cpus_attach);
} else
guarantee_online_cpus(cs, cpus_attach);