linux-kernel - Re: [tip:sched/core] sched: Add 'autogroup' scheduling feature: automated per session task groups

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Message-ID: <1292851159.5021.2.camel@laptop>
Date:	Mon, 20 Dec 2010 14:19:19 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Bharata B Rao <bharata.rao@...il.com>
Cc:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	mathieu.desnoyers@...icios.com, torvalds@...ux-foundation.org,
	efault@....de, pjt@...gle.com, markus@...ppelsdorf.de,
	tglx@...utronix.de, oleg@...hat.com, mingo@...e.hu,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:sched/core] sched: Add 'autogroup' scheduling feature:
 automated per session task groups

On Mon, 2010-12-20 at 18:38 +0530, Bharata B Rao wrote:
> The autogroup patchset removes the display of cgroup name from
> sched_debug output. 

Hrmph.. that wasn't supposed to happen, care to send a patch to fix that
up?


> Also, with tg_shares_up improvements, the leaf cfs_rqs are maintained
> on rq->leaf_cfs_rq_list only if they carry any load. But the code to
> display cfs_rq information for sched_debug isn't updated and hence
> information from a few cfs_rqs are missing from sched_debug.

Well, that's a _good_ thing, right?

I mean, if we know they're empty, and don't contribute to schedule, why
bother displaying them?
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