rcu, rcutorture: make quiescent rcutorture less power-hungry

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: josh@freedesktop.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: dino@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: torvalds@linux-foundation.org
Cc: vegard.nossum@gmail.com
Cc: adobriyan@gmail.com
Cc: oleg@tv-sign.ru
Cc: bunk@kernel.org
Cc: rjw@sisk.pl
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 27003e2..0c40c13 100644 (file)
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -196,7 +196,10 @@ static void
 rcu_stutter_wait(void)
 {
        while (stutter_pause_test || !rcutorture_runnable)
-               schedule_timeout_interruptible(1);
+               if (rcutorture_runnable)
+                       schedule_timeout_interruptible(1);
+               else
+                       schedule_timeout_interruptible(HZ);
 }
 
 /*