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* [PATCH tip/core/rcu 0/17] v2 Fixups for 3.6
@ 2012-06-22 15:35 Paul E. McKenney
  2012-06-22 15:34 ` [PATCH tip/core/rcu 01/17] rcu: Fix detection of abruptly-ending stall Paul E. McKenney
  0 siblings, 1 reply; 24+ messages in thread
From: Paul E. McKenney @ 2012-06-22 15:35 UTC (permalink / raw)
  To: linux-kernel
  Cc: mingo, laijs, dipankar, akpm, mathieu.desnoyers, josh, niv, tglx,
	peterz, rostedt, Valdis.Kletnieks, dhowells, eric.dumazet, darren,
	fweisbec, sbw, patches

Hello!

This patch series has general fixups and improvements.  This is version 2,
the prior version may be found at: https://lkml.org/lkml/2012/6/15/388.
The individual patches are as follows:

1.	Get rid of the false positives from the code that recognizes
	a CPU stall that ends just as it is detected.
2.	Consolidate open-coded initializations of RCU callback lists.
3.	Protect unsynchronized accesses to ->qlen with ACCESS_ONCE()
	to document the unsynchronized access and to prevent compiler
	mischief.
4.	Add RCU_POINTER_INITIALIZER() for static initialization to allow
	do-while formulation of the existing RCU_INIT_POINTER().
5.	Convert clever use of RCU_INIT_POINTER() for gcc-style
	initialization to RCU_POINTER_INITIALIZER().
6.	Wrap RCU_INIT_POINTER() macro in obligatory do-while.
7.	Remove extraneous parentheses from rcu_assign_keypointer()
	to allow rcu_assign_pointer() to be wrapped in do-while.
8.	Wrap rcu_assign_pointer() macro in obligatory do-while.
9.	Consolidate the identical CONFIG_TREE_PREEMPT_RCU and
	CONFIG_TINY_PREEMPT_RCU versions of __rcu_read_lock() and
	__rcu_read_unlock().
10.	Remove the old inline-function version of __kfree_rcu() and
	__is_kfree_rcu_offset().
11.	Make __call_rcu() correctly handle calls from the idle loop.
12.	Make __call_rcu() correctly handle calls from a CPU that is
	in the process of going offline.
13.	Split __call_rcu() into the part that actually deals with
	enqueueing the callback and the part that kicks RCU's
	grace-period machinery.
14.	Make RCU_TINY's rcu_is_cpu_idle() function safe for "make
	randconfig".
15.	Properly initialize the preemptible-RCU string in kernels built
	without CONFIG_RCU_FAST_NO_HZ (courtesy of Carsten Emde).
16.	Disable preemption in rcu_blocking_is_gp() to allow future
	optimization of preemptible-RCU synchronize_rcu() for single-CPU
	systems.
17.	Add a warning for CPUs going offline with RCU callbacks queued.

Changes since version 1:

o	Applied Josh Triplett review comments.
o	Added patches 15-17.

							Thanx, Paul

 b/include/linux/init_task.h |    4 -
 b/include/linux/key.h       |    2 
 b/include/linux/rcupdate.h  |    8 ++
 b/kernel/rcupdate.c         |   44 +++++++++++
 b/kernel/rcutiny.c          |    4 -
 b/kernel/rcutiny_plugin.h   |   47 ------------
 b/kernel/rcutree.c          |    4 -
 b/kernel/rcutree_plugin.h   |   47 ------------
 include/linux/rcupdate.h    |   42 ++---------
 kernel/rcutree.c            |  164 ++++++++++++++++++++++----------------------
 kernel/rcutree_plugin.h     |    1 
 11 files changed, 157 insertions(+), 210 deletions(-)


^ permalink raw reply	[flat|nested] 24+ messages in thread
end of thread, other threads:[~2012-06-25  4:03 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz follow: Atom feed
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2012-06-22 15:35 [PATCH tip/core/rcu 0/17] v2 Fixups for 3.6 Paul E. McKenney
2012-06-22 15:34 ` [PATCH tip/core/rcu 01/17] rcu: Fix detection of abruptly-ending stall Paul E. McKenney
2012-06-22 15:34   ` [PATCH tip/core/rcu 02/17] rcu: Consolidate duplicate callback-list initialization Paul E. McKenney
2012-06-22 15:34   ` [PATCH tip/core/rcu 03/17] rcu: Add ACCESS_ONCE() to ->qlen accesses Paul E. McKenney
2012-06-22 15:34   ` [PATCH tip/core/rcu 04/17] rcu: Add a gcc-style structure initializer for RCU pointers Paul E. McKenney
2012-06-22 16:02     ` David Howells
2012-06-22 15:35   ` [PATCH tip/core/rcu 05/17] rcu: Use new RCU_POINTER_INITIALIZER for gcc-style initializations Paul E. McKenney
2012-06-22 16:02     ` David Howells
2012-06-22 15:35   ` [PATCH tip/core/rcu 06/17] rcu: Remove return value from RCU_INIT_POINTER() Paul E. McKenney
2012-06-22 16:06     ` David Howells
2012-06-22 15:35   ` [PATCH tip/core/rcu 07/17] key: Remove extraneous parentheses from rcu_assign_keypointer() Paul E. McKenney
2012-06-22 16:04     ` David Howells
2012-06-23  5:59       ` Paul E. McKenney
2012-06-25  4:02         ` Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 08/17] rcu: Remove return value from rcu_assign_pointer() Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 09/17] rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 10/17] rcu: Remove function versions of __kfree_rcu and __is_kfree_rcu_offset Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 11/17] rcu: Make __call_rcu() handle invocation from idle Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 12/17] rcu: Prevent __call_rcu() from invoking RCU core on offline CPUs Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 13/17] rcu: Split RCU core processing out of __call_rcu() Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 14/17] rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 15/17] Prevent uninitialized string in RCU stall info Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 16/17] rcu: Disable preemption in rcu_blocking_is_gp() Paul E. McKenney
2012-06-22 15:35   ` [PATCH tip/core/rcu 17/17] rcu: Add check for CPUs going offline with callbacks queued Paul E. McKenney

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