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Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

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Pull workqueue fix from Tejun Heo:
 "The optimization for setting unbound worker affinity masks collided
  with recent scheduler changes triggering warning messages.

  This late pull request fixes the bug by removing the optimization"

* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Fix setting affinity of unbound worker threads
This commit is contained in:
Linus Torvalds 2016-07-16 06:36:55 +09:00
commit 8dcf5a80dd
1 changed files with 1 additions and 5 deletions
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6
kernel/workqueue.c
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@ -4600,15 +4600,11 @@ static void restore_unbound_workers_cpumask(struct worker_pool *pool, int cpu)
if (!cpumask_test_cpu(cpu, pool->attrs->cpumask))
return;
/* is @cpu the only online CPU? */
cpumask_and(&cpumask, pool->attrs->cpumask, cpu_online_mask);
if (cpumask_weight(&cpumask) != 1)
return;
/* as we're called from CPU_ONLINE, the following shouldn't fail */
for_each_pool_worker(worker, pool)
WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task,
pool->attrs->cpumask) < 0);
WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, &cpumask) < 0);
}
/*