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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
	josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de,
	peterz@infradead.org, rostedt@goodmis.org,
	Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
	edumazet@google.com, darren@dvhart.com, fweisbec@gmail.com,
	sbw@mit.edu
Subject: [PATCH tip/core/rcu 0/13] v2 TINY_RCU changes for 3.11
Date: Mon, 20 May 2013 07:57:51 -0700	[thread overview]
Message-ID: <20130520145751.GA32218@linux.vnet.ibm.com> (raw)

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(-)


             reply	other threads:[~2013-05-20 14:58 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-20 14:57 Paul E. McKenney [this message]
2013-05-20 14:58 ` [PATCH tip/core/rcu 01/13] rcu: Remove TINY_PREEMPT_RCU Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 02/13] rcu: Remove show_tiny_preempt_stats() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 03/13] rcu: Remove rcu_preempt_check_callbacks() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 04/13] rcu: Remove rcu_preempt_remove_callbacks() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 05/13] rcu: Remove rcu_preempt_process_callbacks() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 06/13] rcu: Simplify RCU_TINY RCU callback invocation Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 07/13] rcu: Remove check_cpu_stall_preempt() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 08/13] rcu: Remove the CONFIG_TINY_RCU ifdefs in rcutiny.h Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 09/13] rcu: Remove rcu_preempt_note_context_switch() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 10/13] rcu: Consolidate rcutiny_plugin.h ifdefs Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 11/13] rcu: Remove TINY_PREEMPT_RCU tracing documentation Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 12/13] rcu: Shrink TINY_RCU by moving exit_rcu() Paul E. McKenney
2013-05-20 14:58   ` [PATCH tip/core/rcu 13/13] rcu: Shrink TINY_RCU by reworking CPU-stall ifdefs Paul E. McKenney
2013-05-21 17:31     ` Josh Triplett
2013-05-21 21:09       ` Paul E. McKenney
2013-05-21 21:48         ` Josh Triplett

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