linux-kernel - Re: [PATCH 2/2] i7300

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Message-ID: <48FE546B.4000003@oracle.com>
Date:	Tue, 21 Oct 2008 15:15:07 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
CC:	Randy Dunlap <randy.dunlap@...cle.com>,
	Len Brown <lenb@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Henroid, Andrew D" <andrew.d.henroid@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 2/2] i7300_idle driver v1.55

Pallipadi, Venkatesh wrote:
> Thanks for the review. Some comments below.
> 
> Thanks,
> Venki
> 
>> What is debugfs used for?  any docs for it?
> 
> It has some statistics about how many times we went
> into "memory throttling" state and how long we stayed
> there since the boot. And one tunable that tunes a
> parameter changing the policy to start throttling.
> Will document this with an update patch.

"Normal" tunables should be in sysfs, not debugfs.
Or is this just a debugging tunable?

You surely can't be certain (or require) that debugfs
be available.

~Randy
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