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From: Arnd Bergmann <arnd@arndb.de>
To: Christoph Hellwig <hch@lst.de>
Cc: cbe-oss-dev@ozlabs.org, Jeremy Kerr <jk@ozlabs.org>,
	linux-kernel@vger.kernel.org, mingo@elte.hu,
	Michael Kerrisk <mtk.manpages@googlemail.com>
Subject: SCHED_IDLE documentation
Date: Mon, 3 Mar 2008 07:21:52 +0100	[thread overview]
Message-ID: <200803030721.52869.arnd@arndb.de> (raw)
In-Reply-To: <20080303051719.GA26102@lst.de>

On Monday 03 March 2008, Christoph Hellwig wrote:
> On Mon, Mar 03, 2008 at 06:12:27AM +0100, Arnd Bergmann wrote:
> > > I'm okay with the algorithm, but please don't use policy == SCHED_IDLE
> > > as the flag for it. ?SCHED_IDLE is a user-visible and user-settable
> > > scheduler class and we shouldn't overload this. 
> > 
> > Ah, didn't know that. Is that a fairly recent interface in Linux? I can't
> > find any reference to it in the sched_setscheduler man page, though the
> > mail archives have numerous discussions about the semantics throughout
> > the last 10 years.
> 
> It went in with the CFS scheduler and is indeed as far as I can tell
> totally undocumented (sigh..)

So was there no documentation written for it, or does the new man page
just need to make it into distro releases?

If we don't have any man page, what is the actual definition of SCHED_IDLE
anyway?

	Arnd <><

       reply	other threads:[~2008-03-03  6:22 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1203376368.275756.252634247263.1.gpush@pokey>
     [not found] ` <200803030612.28039.arnd@arndb.de>
     [not found]   ` <20080303051719.GA26102@lst.de>
2008-03-03  6:21     ` Arnd Bergmann [this message]
2008-03-03  7:33       ` Ingo Molnar
2008-03-03  8:40         ` Michael Kerrisk
2008-03-03  9:24           ` Ingo Molnar
2008-03-03  9:31             ` Arnd Bergmann
2008-03-03 10:03               ` Michael Kerrisk
2008-03-03 10:04               ` Ingo Molnar
2008-03-03 10:12                 ` Michael Kerrisk
2008-03-03 10:07             ` Michael Kerrisk
2008-03-03 10:17               ` Ingo Molnar
2008-03-03 10:20                 ` Michael Kerrisk
2008-03-03 12:31             ` Michael Kerrisk
2008-03-03 12:52               ` Ingo Molnar
2008-03-03 14:06                 ` Michael Kerrisk
2008-03-04 11:11                   ` Peter Zijlstra
2008-03-05 15:19                     ` Michael Kerrisk
2008-03-03 14:42                 ` Michael Kerrisk
2008-03-05 15:02                   ` Michael Kerrisk

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