Commit c98a9805 authored by Tal Shorer's avatar Tal Shorer Committed by Tejun Heo
Browse files

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 <tal.shorer@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 7d229c66

kernel/workqueue.c

+6 −1
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
#include <linux/nodemask.h>

#include <linux/moduleparam.h>

#include <linux/uaccess.h>

#include <linux/sched/isolation.h>



#include "workqueue_internal.h"
@@ -4957,6 +4958,10 @@ 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)) {

		apply_wqattrs_lock();
@@ -5555,7 +5560,7 @@ 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_copy(wq_unbound_cpumask, housekeeping_cpumask(HK_FLAG_DOMAIN));



	pwq_cache = KMEM_CACHE(pool_workqueue, SLAB_PANIC);