Commit b5149873 authored by Tal Shorer's avatar Tal Shorer Committed by Tejun Heo
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workqueue: respect isolated cpus when queueing an unbound work

Initialize wq_unbound_cpumask to exclude cpus that were isolated by
the cmdline's isolcpus parameter.
Signed-off-by: default avatarTal Shorer <>
Signed-off-by: default avatarTejun Heo <>
parent 9c323bff
......@@ -4980,6 +4980,10 @@ int workqueue_set_unbound_cpumask(cpumask_var_t cpumask)
if (!zalloc_cpumask_var(&saved_cpumask, GFP_KERNEL))
return -ENOMEM;
* Not excluding isolated cpus on purpose.
* If the user wishes to include them, we allow that.
cpumask_and(cpumask, cpumask, cpu_possible_mask);
if (!cpumask_empty(cpumask)) {
......@@ -5579,7 +5583,7 @@ int __init workqueue_init_early(void)
WARN_ON(__alignof__(struct pool_workqueue) < __alignof__(long long));
BUG_ON(!alloc_cpumask_var(&wq_unbound_cpumask, GFP_KERNEL));
cpumask_copy(wq_unbound_cpumask, cpu_possible_mask);
cpumask_andnot(wq_unbound_cpumask, cpu_possible_mask, cpu_isolated_map);
pwq_cache = KMEM_CACHE(pool_workqueue, SLAB_PANIC);
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