From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, 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, dhowells@redhat.com,
edumazet@google.com, darren@dvhart.com, fweisbec@gmail.com,
oleg@redhat.com, sbw@mit.edu
Subject: [PATCH tip/core/rcu 0/3] Response-time changes for 3.15
Date: Mon, 17 Feb 2014 13:40:07 -0800 [thread overview]
Message-ID: <20140217214007.GA6609@linux.vnet.ibm.com> (raw)
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(-)
next reply other threads:[~2014-02-17 21:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-17 21:40 Paul E. McKenney [this message]
2014-02-17 21:40 ` [PATCH tip/core/rcu 1/3] rcu: Optimize rcu_is_nocb_cpu() for RCU_NOCB_CPU_ALL Paul E. McKenney
2014-02-17 21:40 ` [PATCH tip/core/rcu 2/3] rcu: Optimize rcu_needs_cpu() " Paul E. McKenney
2014-02-17 21:53 ` Josh Triplett
2014-02-17 21:40 ` [PATCH tip/core/rcu 3/3] rcu: Optimize RCU_FAST_NO_HZ " Paul E. McKenney
2014-02-17 21:54 ` Josh Triplett
2014-02-17 21:50 ` [PATCH tip/core/rcu 1/3] rcu: Optimize rcu_is_nocb_cpu() " Josh Triplett
2014-02-17 23:33 ` Paul E. McKenney
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