workqueue: Use cond_resched_rcu_qs macro

Tidy up and use cond_resched_rcu_qs when calling cond_resched and
reporting potential quiescent state to RCU.  Splitting this change in
this way allows easy backporting to -stable for kernel versions not
having cond_resched_rcu_qs().

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 345bec9..09b685d 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2046,8 +2046,7 @@ __acquires(&pool->lock)
         * stop_machine. At the same time, report a quiescent RCU state so
         * the same condition doesn't freeze RCU.
         */
-       rcu_note_voluntary_context_switch(current);
-       cond_resched();
+       cond_resched_rcu_qs();
 
        spin_lock_irq(&pool->lock);