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cpuset: use partition_cpus_change for setting exclusive cpus

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A previous patch has introduced a new helper function
partition_cpus_change(). Now replace the exclusive cpus setting logic
with this helper function.

Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Chen Ridong
2025-09-17 08:37:31 -10:00
committed by Tejun Heo
parent de9f15e21c
commit c49b5e89c4
1 changed files with 2 additions and 27 deletions
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kernel/cgroup/cpuset.c
+2 -27
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@@ -2561,8 +2561,6 @@ static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs,
{
int retval;
struct tmpmasks tmp;
struct cpuset *parent = parent_cs(cs);
bool invalidate = false;
bool force = false;
int old_prs = cs->partition_root_state;
@@ -2594,32 +2592,9 @@ static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs,
if (alloc_tmpmasks(&tmp))
return -ENOMEM;
if (old_prs) {
if (cpumask_empty(trialcs->effective_xcpus)) {
invalidate = true;
cs->prs_err = PERR_INVCPUS;
} else if (prstate_housekeeping_conflict(old_prs, trialcs->effective_xcpus)) {
invalidate = true;
cs->prs_err = PERR_HKEEPING;
} else if (tasks_nocpu_error(parent, cs, trialcs->effective_xcpus)) {
invalidate = true;
cs->prs_err = PERR_NOCPUS;
}
trialcs->prs_err = PERR_NONE;
partition_cpus_change(cs, trialcs, &tmp);
if (is_remote_partition(cs)) {
if (invalidate)
remote_partition_disable(cs, &tmp);
else
remote_cpus_update(cs, trialcs->exclusive_cpus,
trialcs->effective_xcpus, &tmp);
} else if (invalidate) {
update_parent_effective_cpumask(cs, partcmd_invalidate,
NULL, &tmp);
} else {
update_parent_effective_cpumask(cs, partcmd_update,
trialcs->effective_xcpus, &tmp);
}
}
spin_lock_irq(&callback_lock);
cpumask_copy(cs->exclusive_cpus, trialcs->exclusive_cpus);
cpumask_copy(cs->effective_xcpus, trialcs->effective_xcpus);