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Date: Tue, 6 Oct 2015 09:45:25 -0700 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: linux-kernel@...r.kernel.org Cc: mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com, josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Subject: [PATCH tip/core/rcu 04/13] torture: Consolidate cond_resched_rcu_qs() into stutter_wait() This commit moves cond_resched_rcu_qs() into stutter_wait(), saving a line and also avoiding RCU CPU stall warnings from all torture loops containing a stutter_wait(). Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com> --- kernel/rcu/rcutorture.c | 2 -- kernel/torture.c | 1 + 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 77192953dee5..8a65b7d471a0 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -768,7 +768,6 @@ static int rcu_torture_boost(void *arg) } call_rcu_time = jiffies; } - cond_resched_rcu_qs(); stutter_wait("rcu_torture_boost"); if (torture_must_stop()) goto checkwait; @@ -1208,7 +1207,6 @@ rcu_torture_reader(void *arg) __this_cpu_inc(rcu_torture_batch[completed]); preempt_enable(); cur_ops->readunlock(idx); - cond_resched_rcu_qs(); stutter_wait("rcu_torture_reader"); } while (!torture_must_stop()); if (irqreader && cur_ops->irq_capable) { diff --git a/kernel/torture.c b/kernel/torture.c index 3e4840633d3e..44aa462d033f 100644 --- a/kernel/torture.c +++ b/kernel/torture.c @@ -523,6 +523,7 @@ static int stutter; */ void stutter_wait(const char *title) { + cond_resched_rcu_qs(); while (READ_ONCE(stutter_pause_test) || (torture_runnable && !READ_ONCE(*torture_runnable))) { if (stutter_pause_test) -- 2.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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