Messages in this thread Patch in this message | | | From | Zqiang <> | Subject | [PATCH v2] workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs | Date | Thu, 31 Mar 2022 13:57:17 +0800 |
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When CPU going offline, all workers in this CPU pool will lose affinity to this CPU, and may run to isolated CPU. like kworker in unbound pool, set CPU affinity of these kworker is wq_unbound_cpumask.
Signed-off-by: Zqiang <qiang1.zhang@intel.com> --- v1->v2: Replace housekeeping_cpumask(HK_TYPE_WQ) with wq_unbound_cpumask.
kernel/workqueue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index abcc9a2ac319..b447012df177 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5023,7 +5023,7 @@ static void unbind_workers(int cpu) for_each_pool_worker(worker, pool) { kthread_set_per_cpu(worker->task, -1); - WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, cpu_possible_mask) < 0); + WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, wq_unbound_cpumask) < 0); } mutex_unlock(&wq_pool_attach_mutex); -- 2.25.1
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