From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Fri, 3 Aug 2012 23:41:23 +0000 (-0700)
Subject: rcu: Document SRCU dead-CPU capabilities, emphasize read-side limits
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~101^2~1^2~2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2aef619c7524d73d18ff7b102a1706066b69141d;p=pandora-kernel.git

rcu: Document SRCU dead-CPU capabilities, emphasize read-side limits

The current documentation did not help someone grepping for SRCU to
learn that disabling preemption is not a replacement for srcu_read_lock(),
so upgrade the documentation to bring this out, not just for SRCU,
but also for RCU-bh.  Also document the fact that SRCU readers are
respected on CPUs executing in user mode, idle CPUs, and even on
offline CPUs.

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>
---

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