linux-kernel - [PATCH tip/core/rcu 0/3] Response-time changes for 3.15

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Message-ID: <20140217214007.GA6609@linux.vnet.ibm.com>
Date:	Mon, 17 Feb 2014 13:40:07 -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 0/3] Response-time changes for 3.15

Hello!

This series contains minor response-time improvements.

1.	Create trivial always-true version of rcu_is_nocb_cpu() for
	CONFIG_RCU_NOCB_CPU_ALL=y kernels.

2.	Create trivial always-false version of rcu_needs_cpu() for
	CONFIG_RCU_NOCB_CPU_ALL=y kernels.

3.	Don't bother doing CONFIG_RCU_FAST_NO_HZ work at idle entry
	and exit time for CONFIG_RCU_NOCB_CPU_ALL=y kernels.

							Thanx, Paul

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

 b/include/linux/rcupdate.h |    4 ++++
 b/include/linux/rcutiny.h  |    6 ------
 b/include/linux/rcutree.h  |    2 ++
 b/kernel/rcu/tree.c        |    2 +-
 b/kernel/rcu/tree_plugin.h |    2 ++
 include/linux/rcupdate.h   |    9 +++++++++
 kernel/rcu/tree_plugin.h   |   11 +++++++++--
 7 files changed, 27 insertions(+), 9 deletions(-)

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