linux-kernel - Re: High latency on /sys/class/thermal

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Message-Id: <20090411121416.91fe3c88.akpm@linux-foundation.org>
Date:	Sat, 11 Apr 2009 12:14:16 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	=?ISO-8859-1?Q? "Tiago_Sim=F5es_Batista" ?= 
	<tiagosbatista@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: High latency on /sys/class/thermal

(cc linux-acpi)

On Sat, 11 Apr 2009 15:56:12 +0100 "Tiago Sim__es Batista" <tiagosbatista@...il.com> wrote:

> Hi all
> 
> Yesterday, I recompiled my kernel (git + tuxonice)
> v2.6.30-rc1-1002-gac91f91, there were a couple of issues, the main one
> is ilustrated bellow.
> 
> I am not familiar with the kernel code, but if you give me some
> pointers, I will be glad to investigate this further
> 
> $time cat /sys/class/thermal/thermal_zone0/temp 
> 34000
> 
> real	0m6.613s
> user	0m0.000s
> sys	0m0.001s
> 

Is this a regression?  Was 2.6.29 OK?

Thanks.
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