linux-kernel - Re: [RFC PATCH] RTTIME watchdog timer proc interface

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Message-Id: <1202894869.14326.1.camel@twins>
Date:	Wed, 13 Feb 2008 10:27:49 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] RTTIME watchdog timer proc interface


On Tue, 2008-02-12 at 14:21 -0800, Hiroshi Shimamoto wrote:
> Peter Zijlstra wrote:
> > On Mon, 2008-02-11 at 13:44 -0800, Hiroshi Shimamoto wrote:
> >> Hi Ingo,
> >>
> >> I think an interface to access RLIMIT_RTTIME from outside is useful.
> >> It makes administrator able to set RLIMIT_RTTIME watchdog to existing
> >> real-time applications without impact.
> >>
> >> I implemented that interface with /proc filesystem.
> > 
> > /proc/<pid>/tasks/<tid>/rttime might also make sense.
> > 
> thanks, I'll add.

I just realized that because its an rlimit, we store these values
process-wide. The per task thing was a feature request from someone, and
I just jumped on your interface without proper consideration.

I'll need to think a bit more on this

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