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authorPaul E. McKenney <paul.mckenney@linaro.org>2011-04-17 23:45:23 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-05-05 23:16:55 -0700
commit3acf4a9a3d63f23430f940842829175b0778a1b8 (patch)
treee0bcf3bc65ac6272425a00703654a70650d8634c /kernel
parente3995a25fa361ce987a7d0ade00b17e3151519d7 (diff)
downloadlinux-3acf4a9a3d63f23430f940842829175b0778a1b8.tar.bz2
rcu: avoid hammering sched with yet another bound RT kthread
The scheduler does not appear to take kindly to having multiple real-time threads bound to a CPU that is going offline. So this commit is a temporary hack-around to avoid that happening. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcutorture.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index c224da41890c..4d256dba7d9b 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -163,11 +163,11 @@ static int stutter_pause_test;
#endif
int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT;
-#ifdef CONFIG_RCU_BOOST
+#if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU)
#define rcu_can_boost() 1
-#else /* #ifdef CONFIG_RCU_BOOST */
+#else /* #if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU) */
#define rcu_can_boost() 0
-#endif /* #else #ifdef CONFIG_RCU_BOOST */
+#endif /* #else #if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU) */
static unsigned long boost_starttime; /* jiffies of next boost test start. */
DEFINE_MUTEX(boost_mutex); /* protect setting boost_starttime */