linux-kernel - [PATCH tip/core/rcu 0/13] v2 TINY

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Message-ID: <20130520145751.GA32218@linux.vnet.ibm.com>
Date:	Mon, 20 May 2013 07:57:51 -0700
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@...icios.com,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, edumazet@...gle.com, darren@...art.com,
	fweisbec@...il.com, sbw@....edu
Subject: [PATCH tip/core/rcu 0/13] v2 TINY_RCU changes for 3.11

Hello!

This series removes TINY_PREEMPT_RCU, as promised/threatened at
http://lwn.net/Articles/541037/ and https://lkml.org/lkml/2012/11/12/545.

1.	Remove TINY_PREEMPT_RCU.  This is a straight syntactic removal,
	with no attempt at cleanup.  The remaining patches do the cleanup.

2.	Inline the now-empty show_tiny_preempt_stats() function.

3.	Inline the now-empty rcu_preempt_check_callbacks() function.

4.	Inline the now-empty rcu_preempt_remove_callbacks() function.

5.	Inline the now-empty rcu_preempt_process_callbacks() function.

6.	Because TINY_RCU no longer has kthreads, remove the code that
	used to abstract away kthread vs. softirq invocation.

7.	Inline the now-empty check_cpu_stall_preempt() function.

8.	Remove CONFIG_TINY_RCU ifdefs from include/linux/rcutiny.h

9.	Inline the now-empty rcu_preempt_note_context_switch() function.

10.	Move code to allow consolidating ifdefs in kernel/rcutiny_plugin.h.

11.	Remove TINY_PREEMPT_RCU's tracing formats from documentation.

12.	Shrink TINY_RCU a bit by moving exit_rcu() to TREE_RCU, leaving
	TINY_RCU with a static inline empty function.

13.	Shrink TINY_RCU a bit more by making reset_cpu_stall_ticks() and
	check_cpu_stalls() inlineable.

Changes from v1: Add Reviewed-bys and add the 13th patch.

							Thanx, Paul

 b/Documentation/RCU/trace.txt |  100 ----
 b/include/linux/hardirq.h     |    2 
 b/include/linux/rcupdate.h    |    5 
 b/include/linux/rcutiny.h     |   45 -
 b/include/linux/rcutree.h     |    3 
 b/init/Kconfig                |   10 
 b/kernel/rcupdate.c           |   26 -
 b/kernel/rcutiny.c            |   21 
 b/kernel/rcutiny_plugin.h     | 1023 +-----------------------------------------
 b/kernel/rcutree_plugin.h     |   26 +
 10 files changed, 96 insertions(+), 1165 deletions(-)

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