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Commit 956539b75921f561c0956c22d37320780e8b4ba1

Authored by Paul E. McKenney
Committed by Ingo Molnar
1 parent dbe01350fa
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

rcu: Enable synchronize_sched_expedited() fastpath 

This patch adds a counter increment to enable tasks to actually
take the synchronize_sched_expedited() function's fastpath.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1257889042435-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff

... ... @@ -10865,6 +10865,7 @@
10865 10865 spin_unlock_irqrestore(&rq->lock, flags);
10866 10866 }
10867 10867 rcu_expedited_state = RCU_EXPEDITED_STATE_IDLE;
  10868 + synchronize_sched_expedited_count++;
10868 10869 mutex_unlock(&rcu_sched_expedited_mutex);
10869 10870 put_online_cpus();
10870 10871 if (need_full_sync)