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
..
9p.h	net/9p: Convert net/9p protocol dumps to tracepoints	2011-10-24 11:13:12 -05:00
asoc.h	ASoC: Add another DAPM stat for neighbour checks	2011-09-22 17:24:40 +01:00
block.h	blktrace: add FLUSH/FUA support	2011-08-11 10:36:05 +02:00
btrfs.h	Btrfs: space leak tracepoints	2012-01-16 15:29:43 -05:00
compaction.h
ext3.h	ext3: Add fixed tracepoints	2011-06-25 17:29:51 +02:00
ext4.h	ext4: do not reference pa_inode from group_pa	2011-12-18 15:49:54 -05:00
gfpflags.h	mm: tracing: add missing GFP flags to tracing	2011-05-11 18:50:45 -07:00
gpio.h	gpio: add trace events for setting direction and value	2011-05-20 00:40:19 -06:00
irq.h	rcu: Use softirq to address performance regression	2011-06-14 15:25:39 -07:00
jbd.h	jbd: Add fixed tracepoints	2011-06-25 17:29:51 +02:00
jbd2.h	jbd2: remove jbd2_dev_to_name() from jbd2 tracepoints	2011-07-10 22:05:08 -04:00
kmem.h	mm-tracepoint: rename page-free events	2012-01-10 16:30:41 -08:00
kvm.h
lock.h
mce.h
module.h	include: replace linux/module.h with "struct module" wherever possible	2011-10-31 19:32:32 -04:00
napi.h
net.h	net: tracepoint of net_dev_xmit sees freed skb and causes panic	2011-06-02 14:06:31 -07:00
oom.h	tracepoint: add tracepoints for debugging oom_score_adj	2012-01-10 16:30:44 -08:00
power.h
rcu.h	rcu: Avoid waking up CPUs having only kfree_rcu() callbacks	2012-02-21 09:03:25 -08:00
regmap.h	regmap: Add trace event for successful cache reads	2011-11-30 20:51:09 +00:00
regulator.h
rpm.h	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
sched.h	sched/tracing: Add a new tracepoint for sleeptime	2011-12-23 17:56:17 +01:00
scsi.h
signal.h
skb.h
sock.h	core: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
syscalls.h
task.h	tracepoint: add tracepoints for debugging oom_score_adj	2012-01-10 16:30:44 -08:00
timer.h
udp.h	udp: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
vmscan.h	vmscan/trace: Add 'file' info to trace_mm_vmscan_lru_isolate()	2012-01-12 20:13:08 -08:00
workqueue.h
writeback.h	writeback: fix dereferencing NULL bdi->dev on trace_writeback_queue	2012-02-06 11:17:25 +08:00
xen.h	xen/tracing: fix compile errors when tracing is disabled.	2011-07-25 15:51:02 -07:00