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

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Message-ID: <535047B6.6000404@hp.com>
Date:	Thu, 17 Apr 2014 17:29:26 -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 04/17/2014 11:50 AM, Peter Zijlstra wrote:
> On Thu, Apr 17, 2014 at 11:03:57AM -0400, Waiman Long wrote:
>> +#if !defined(__LITTLE_ENDIAN)&&  !defined(__BIG_ENDIAN)
>> +#error "Missing either LITTLE_ENDIAN or BIG_ENDIAN definition."
>> +#endif
> This seems entirely superfluous, I don't think a kernel build will go
> anywhere if either is missing.

Yes, I am on the conservative side when I add that. I can certainly take 
it out if you think that is not needed.

-Longman
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