linux-kernel - Re: [PATCH v4 0/3] qrwlock: Introducing a queue read/write lock implementation

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Message-ID: <20131002151937.GU3081@twins.programming.kicks-ass.net>
Date:	Wed, 2 Oct 2013 17:19:37 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Waiman Long <Waiman.Long@...com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Arnd Bergmann <arnd@...db.de>,
	linux-arch@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michel Lespinasse <walken@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Rik van Riel <riel@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	George Spelvin <linux@...izon.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	"Chandramouleeswaran, Aswin" <aswin@...com>,
	"Norton, Scott J" <scott.norton@...com>
Subject: Re: [PATCH v4 0/3] qrwlock: Introducing a queue read/write lock
 implementation

On Wed, Oct 02, 2013 at 10:09:03AM -0400, Waiman Long wrote:
> v3->v4:
>  - Optimize the fast path with better cold cache behavior and
>    performance.
>  - Removing some testing code.
>  - Make x86 use queue rwlock with no user configuration.

>  arch/x86/Kconfig                      |    1 +
>  arch/x86/include/asm/spinlock.h       |    2 +
>  arch/x86/include/asm/spinlock_types.h |    4 +
>  include/asm-generic/qrwlock.h         |  256 +++++++++++++++++++++++++++++++++
>  include/linux/rwlock.h                |   15 ++
>  include/linux/rwlock_types.h          |   13 ++
>  kernel/Kconfig.locks                  |    7 +
>  lib/Makefile                          |    1 +
>  lib/qrwlock.c                         |  247 +++++++++++++++++++++++++++++++
>  lib/spinlock_debug.c                  |   19 +++
>  10 files changed, 565 insertions(+), 0 deletions(-)
>  create mode 100644 include/asm-generic/qrwlock.h
>  create mode 100644 lib/qrwlock.c


Where's the ---- for removing the old rwlock from x86?
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