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 0/2] Callback tagging for 3.9
Date: Sat, 26 Jan 2013 16:18:04 -0800 [thread overview]
Message-ID: <20130127001804.GA4122@linux.vnet.ibm.com> (raw)
Hello!
This series contains callback-tagging patches. These were sent earlier
in the idle/no-CBs series, but have been isolated as the more trustworthy
part of that series.
1. Tag callback lists with the grace-period number that they are
waiting for. This change enables a number of optimizations
for RCU_FAST_NO_HZ, and though it add a bit of code, it greatly
simplifies RCU's callback handling.
2. Trace callback acceleration (which is when RCU notices that a
group of callbacks doesn't actually need to wait as long as it
previously thought).
Thanx, Paul
b/include/trace/events/rcu.h | 6 -
b/kernel/rcutree.c | 201 +++++++++++++++++++++++++++++++++++++------
b/kernel/rcutree.h | 2
3 files changed, 179 insertions(+), 30 deletions(-)
next reply other threads:[~2013-01-27 0:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-27 0:18 Paul E. McKenney [this message]
2013-01-27 0:18 ` [PATCH tip/core/rcu 1/2] rcu: Tag callback lists with corresponding grace-period number Paul E. McKenney
2013-01-27 0:18 ` [PATCH tip/core/rcu 2/2] rcu: Trace callback acceleration Paul E. McKenney
2013-01-27 10:51 ` Josh Triplett
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