From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Tue, 13 May 2014 17:14:51 +0000 (-0700)
Subject: documentation: Clarify wake-up/memory-barrier relationship
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~180^2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5726ce06ad6bcd8dd75a204d1465c99a2f897d3a;p=pandora-kernel.git

documentation: Clarify wake-up/memory-barrier relationship

This commit adds an example demonstrating that if a wake_up() doesn't
actually wake something up, no memory ordering is provided.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
---

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