linux-kernel - [PATCH tip/core/rcu 0/3] rcu: resend of grace-period stall and cleanup patches

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Message-ID: <20091122165321.GA19922@linux.vnet.ibm.com>
Date:	Sun, 22 Nov 2009 08:53:21 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, dvhltc@...ibm.com, niv@...ibm.com,
	tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
	Valdis.Kletnieks@...edu, dhowells@...hat.com
Subject: [PATCH tip/core/rcu 0/3] rcu: resend of grace-period stall and
	cleanup patches

Hello!

This patch series is a resend of the three RCU patches that are candidates
for the upcoming 2.6.33 merge window, but that are not yet in -tip.
These are:

1.	A fix for a grace-period-stall bug that occurs on large
	machines.  This was partially fixed by commit 237c80c5,
	and this patch completes the fix using a much cleaner
	method.  237c80c5 would request another quiescent state
	for a CPU that just went offline and that might have already
	gone through a quiescent state for the current grace period.
	In contrast, this patch pushes the quiescent-state reporting
	up the rcu_node tree straightaway.

2.	A cleanup removing function wrapping that has been unnecessary
	since commit e74f4c45 caused CPUs going offline to give up
	their own callbacks.

3.	A cleanup that gets rid of a few annoying #ifdefs by moving
	the code from kernel/rcupdate.c and include/linux/rcupdate.h
	to include/linux/rcutiny.h, include/linux/rcutree.h, and
	kernel/rcutree.c.

							Thanx, Paul
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