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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acpi
asm-generic
crypto
drm
keys
linux	rcu: Avoid waking up CPUs having only kfree_rcu() callbacks	2012-02-21 09:03:25 -08:00
math-emu
media
misc
mtd
net	netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m	2012-02-10 15:08:57 -05:00
pcmcia
rdma
rxrpc
scsi
sound
target	target: Change target_submit_cmd() to return void	2012-02-07 06:41:04 +00:00
trace	rcu: Avoid waking up CPUs having only kfree_rcu() callbacks	2012-02-21 09:03:25 -08:00
video	fbdev fixes for 3.3	2012-02-07 15:54:02 -08:00
xen
Kbuild