From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Fri, 10 Dec 2010 23:02:47 +0000 (-0800)
Subject: rcu: fine-tune grace-period begin/end checks
X-Git-Tag: v2.6.38-rc1~492^2^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=121dfc4b3eba9e2f3c42d35205a3510cc65b9931;p=pandora-kernel.git

rcu: fine-tune grace-period begin/end checks

Use the CPU's bit in rnp->qsmask to determine whether or not the CPU
should try to report a quiescent state.  Handle overflow in the check
for rdp->gpnum having fallen behind.

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