linux-kernel - Re: [PATCH v9 05/19] qspinlock: Optimize for smaller NR

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Message-ID: <53519BBF.7060506@hp.com>
Date:	Fri, 18 Apr 2014 17:40:15 -0400
From:	Waiman Long <waiman.long@...com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-arch@...r.kernel.org,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	xen-devel@...ts.xenproject.org, kvm@...r.kernel.org,
	Paolo Bonzini <paolo.bonzini@...il.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Rik van Riel <riel@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	Scott J Norton <scott.norton@...com>,
	Chegu Vinod <chegu_vinod@...com>
Subject: Re: [PATCH v9 05/19] qspinlock: Optimize for smaller NR_CPUS

On 04/18/2014 03:05 PM, Peter Zijlstra wrote:
> On Fri, Apr 18, 2014 at 01:52:50PM -0400, Waiman Long wrote:
>> I am confused by your notation.
> Nah, I think I was confused :-) Make the 1 _Q_LOCKED_VAL though, as
> that's the proper constant to use.

Everyone gets confused once in a while:-) I have plenty of that myself.

I will change 1 to _Q_LOCKED_VAL as suggested.

-Longman
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