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rcu: avoid hammering sched with yet another bound RT kthread

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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>
This commit is contained in:
Paul E. McKenney 2011-04-17 23:45:23 -07:00 committed by Paul E. McKenney
parent e3995a25fa
commit 3acf4a9a3d
1 changed files with 3 additions and 3 deletions
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6
kernel/rcutorture.c
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@ -163,11 +163,11 @@ static int stutter_pause_test;
#endif #endif
int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT; int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT;
#ifdef CONFIG_RCU_BOOST #if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU)
#define rcu_can_boost() 1 #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 #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. */ static unsigned long boost_starttime; /* jiffies of next boost test start. */
DEFINE_MUTEX(boost_mutex); /* protect setting boost_starttime */ DEFINE_MUTEX(boost_mutex); /* protect setting boost_starttime */