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>
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@ -163,11 +163,11 @@ static int stutter_pause_test;
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#endif
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int rcutorture_runnable = RCUTORTURE_RUNNABLE_INIT;
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#ifdef CONFIG_RCU_BOOST
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#if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU)
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#define rcu_can_boost() 1
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#else /* #ifdef CONFIG_RCU_BOOST */
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#else /* #if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU) */
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#define rcu_can_boost() 0
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#endif /* #else #ifdef CONFIG_RCU_BOOST */
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#endif /* #else #if defined(CONFIG_RCU_BOOST) && !defined(CONFIG_HOTPLUG_CPU) */
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static unsigned long boost_starttime; /* jiffies of next boost test start. */
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DEFINE_MUTEX(boost_mutex); /* protect setting boost_starttime */
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