Paul E. McKenney 486e259340 rcu: Avoid waking up CPUs having only kfree_rcu() callbacks ... When CONFIG_RCU_FAST_NO_HZ is enabled, RCU will allow a given CPU to enter dyntick-idle mode even if it still has RCU callbacks queued. RCU avoids system hangs in this case by scheduling a timer for several jiffies in the future. However, if all of the callbacks on that CPU are from kfree_rcu(), there is no reason to wake the CPU up, as it is not a problem to defer freeing of memory. This commit therefore tracks the number of callbacks on a given CPU that are from kfree_rcu(), and avoids scheduling the timer if all of a given CPU's callbacks are from kfree_rcu(). Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>		2012-02-21 09:03:25 -08:00
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events	rcu: Avoid waking up CPUs having only kfree_rcu() callbacks	2012-02-21 09:03:25 -08:00
define_trace.h	Revert "tracing: Include module.h in define_trace.h"	2011-10-31 19:32:35 -04:00
ftrace.h	perf: Fix counter of ftrace events	2011-10-04 11:07:54 +02:00
syscall.h	tracing: Use a global field list for all syscall exit events	2010-06-28 17:12:44 -04:00