linux-kernel - [RFC PATCH 0/3] locking/mutex: Modifications to mutex

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Date:	Wed,  4 Jun 2014 12:08:28 -0700
From:	Jason Low <jason.low2@...com>
To:	mingo@...nel.org, peterz@...radead.org, tglx@...utronix.de,
	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
	tim.c.chen@...ux.intel.com, peter@...leysoftware.com,
	riel@...hat.com, hpa@...or.com, walken@...gle.com,
	davidlohr@...com, Waiman.Long@...com, aswin@...com,
	scott.norton@...com, chegu_vinod@...com, jason.low2@...com
Subject: [RFC PATCH 0/3] locking/mutex: Modifications to mutex

This patchset contains modifications to mutex.

Patch 1 further reduces unnecessary atomic xchg() operations upon entering
the mutex slowpath in mutex_lock().

Patch 2 corrects/updates the documentation on mutex optimistic spinning.

Patch 3 optimizes mutex trylock slowpath.

Jason Low (3):
  mutex: Try to acquire mutex only if it is unlocked
  mutex: Correct documentation on mutex optimistic spinning
  mutex: Optimize mutex trylock slowpath

 kernel/locking/mutex.c |   47 ++++++++++++++++++++++++++---------------------
 1 files changed, 26 insertions(+), 21 deletions(-)

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