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Message-Id: <1432056298-18738-1-git-send-email-dave@stgolabs.net>
Date: Tue, 19 May 2015 10:24:54 -0700
From: Davidlohr Bueso <dave@...olabs.net>
To: Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>
Cc: Steven Rostedt <rostedt@...dmis.org>,
Mike Galbraith <umgwanakikbuti@...il.com>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Davidlohr Bueso <dave@...olabs.net>,
linux-kernel@...r.kernel.org
Subject: [PATCH -tip 0/4] rtmutex: Spin on owner
Hello,
First three patches are straightforward and found while
going through the code. Patch 4 is the actual meat of the
set, but similar to what we have already in regular mutexes.
While having optimistic spinning in rtmutexes is a desired
feature, I've marked it RFC as I could very well have missed
something inherint in the rt flavor.
Details in the individual patches. Passes pi tests from
Darren's futextest suite as well as all weekend running
pi_stress from rt-tests on a 60 core box.
Thanks!
Davidlohr Bueso (4):
locking/rtmutex: Implement lockless top-waiter wakeup
locking/rtmutex: Use cmp-cmpxchg
locking/rtmutex: Update stale plist comments
locking/rtmutex: Support spin on owner (osq)
include/linux/rtmutex.h | 4 ++
kernel/Kconfig.locks | 4 ++
kernel/locking/rtmutex.c | 175 +++++++++++++++++++++++++++++++++++++++++------
3 files changed, 162 insertions(+), 21 deletions(-)
--
2.1.4
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