linux-kernel - Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long

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Message-ID: <20160603184819.GE3693@twins.programming.kicks-ass.net>
Date:	Fri, 3 Jun 2016 20:48:19 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jason Low <jason.low2@....com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Terry Rudd <terry.rudd@....com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Waiman Long <Waiman.Long@....com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Jason Low <jason.low2@...com>
Subject: Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to
 atomic_long_t

On Fri, Jun 03, 2016 at 11:09:54AM -0700, Jason Low wrote:

>  arch/alpha/include/asm/rwsem.h | 26 +++++++++++++-------------
>  arch/ia64/include/asm/rwsem.h  | 20 ++++++++++----------

So I was looking at rm arch/*/include/asm/rwsem.h :-) Because at the end
of the day you're reimplementing atomic bits.