From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Mon, 17 Dec 2012 22:21:14 +0000 (-0800)
Subject: rcu: Accelerate RCU callbacks at grace-period end
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~120^2^2^3~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b11cc5760a9c48c870ad286e8a6d8fdb998fa58d;p=pandora-kernel.git

rcu: Accelerate RCU callbacks at grace-period end

Now that callback acceleration is idempotent, it is safe to accelerate
callbacks during grace-period cleanup on any CPUs that the kthread happens
to be running on.  This commit therefore propagates the completion
of the grace period to the per-CPU data structures, and also adds an
rcu_advance_cbs() just before the cpu_needs_another_gp() check in order
to reduce false-positive grace periods.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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