linux-kernel - Re: [PATCH] x86: Export tsc related information in sysfs

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Message-ID: <4BF2E0A2.6030209@zytor.com>
Date:	Tue, 18 May 2010 11:46:58 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Dan Magenheimer <dan.magenheimer@...cle.com>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Venkatesh Pallipadi <venki@...gle.com>,
	Ingo Molnar <mingo@...e.hu>, chris.mason@...cle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Export tsc related information in sysfs

On 05/18/2010 10:49 AM, Dan Magenheimer wrote:
> 
> (Though I expect tglx/arjan/andi/mingo to disagree with this proposal
> for similar reasons as the original one that started this thread...)
> 

I'll add another reason to disagree: exporting these as sysfs variables
is non-atomic, but these are really only useful when atomically read as
a unit.

	-hpa
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