From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Mon, 31 Dec 2012 10:24:21 +0000 (-0800)
Subject: rcu: Make rcu_accelerate_cbs() note need for future grace periods
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~120^2^2^3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=910ee45db2f4837c8440e770474758493ab94bf7;p=pandora-kernel.git

rcu: Make rcu_accelerate_cbs() note need for future grace periods

Now that rcu_start_future_gp() has been abstracted from
rcu_nocb_wait_gp(), rcu_accelerate_cbs() can invoke rcu_start_future_gp()
so as to register the need for any future grace periods needed by a
CPU about to enter dyntick-idle mode.  This commit makes this change.
Note that some refactoring of rcu_start_gp() is carried out to avoid
recursion and subsequent self-deadlocks.

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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