linux-kernel - [PATCH tip/core/rcu 0/6] Documentation changes for 3.15

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Message-ID: <20140217212625.GA4083@linux.vnet.ibm.com>
Date:	Mon, 17 Feb 2014 13:26:25 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com,
	edumazet@...gle.com, darren@...art.com, fweisbec@...il.com,
	oleg@...hat.com, sbw@....edu
Subject: [PATCH tip/core/rcu 0/6] Documentation changes for 3.15

Hello!

This series provides a variety of documentation updates:

1.	Update the documentation on actions to take to avoid frenetic
	call_rcu() invocations from exhausting memory, including a mention
	of internal-to-RCU avoidance measures.

2.	Add a note to Documentation/memory-barriers.txt stating that
	ACCESS_ONCE() provides cache coherence for accesses to any
	single given variable.

3.	Add an explicit statement that in control dependencies, the
	condition must include the load in question.

4.	Add WQ_SYSFS workqueues as a work-offloading option in
	Documentation/kernel-per-CPU-kthreads.txt.

5.	It turns out that some types of control dependencies require
	memory barriers, most notably when the exact same store is
	at the beginning of both the then-clause and the else-clause.
	Document this.

6.	Fixups to RTFP.txt

							Thanx, Paul

------------------------------------------------------------------------

 Documentation/memory-barriers.txt           |   29 +++--
 b/Documentation/RCU/RTFP.txt                |  149 +++++++++++++++++++++++-----
 b/Documentation/RCU/checklist.txt           |   19 ++-
 b/Documentation/kernel-per-CPU-kthreads.txt |   13 ++
 b/Documentation/memory-barriers.txt         |   17 +++
 5 files changed, 189 insertions(+), 38 deletions(-)

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