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Subject: RE: [patch 1/1] cpufreq_conservative/ondemand: invert meaning of 'ignore nice'
Date: Fri, 11 Nov 2005 19:30:27 -0800
Message-ID: <88056F38E9E48644A0F562A38C64FB60064B7E0D@scsmsx403.amr.corp.intel.com>
Thread-Topic: [patch 1/1] cpufreq_conservative/ondemand: invert meaning of 'ignore nice'
Thread-Index: AcXmDczz6lDzzHljRzygbh9LA/7KuwBK1wCA
From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
To: "Alexander Clouter" <alex-kernel@digriz.org.uk>, <akpm@osdl.org>,
       <linux-kernel@vger.kernel.org>
Cc: <davej@redhat.com>, <davej@codemonkey.org.uk>, <blaisorblade@yahoo.it>
Sender: linux-kernel-owner@vger.kernel.org
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>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org 
>[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of 
>Alexander Clouter
>Sent: Thursday, November 10, 2005 7:11 AM
>To: akpm@osdl.org; linux-kernel@vger.kernel.org
>Cc: davej@redhat.com; davej@codemonkey.org.uk; blaisorblade@yahoo.it
>Subject: [patch 1/1] cpufreq_conservative/ondemand: invert 
>meaning of 'ignore nice'
>
>The use of the 'ignore_nice' sysfs file is confusing to anyone 
>using it.  
>This removes the sysfs file 'ignore_nice' and in its place creates a 
>'ignore_nice_load' entry which defaults to '1'; meaning nice'd 
>processes are 
>not counted towards the 'business' caclulation.
>
>WARNING: this obvious breaks any userland tools that expected 
>'ignore_nice' 
>to exist, to draw attention to this fact it was concluded on 
>the mailing list 
>that the entry should be removed altogether so the userland 
>app breaks and so 
>the author can build simple to detect workaround.  Having said 
>that it seems 
>currently very few tools even make use of this functionality; 
>all I could 
>find was a Gentoo Wiki entry.
>

Wondering whether a 'version' sysfs entry in cpufreq and ondemand 
directory to make sure any change in the interfaces won't break 
the user space tools in future....

Thanks,
Venki
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