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From: Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>
To: "Michael Kerrisk (man-pages)"
	<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Peter Zijlstra
	<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
	Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	linux-man <linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	lkml <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [patch] sched/autogroup: Fix 64bit kernel nice adjustment
Date: Wed, 23 Nov 2016 15:12:21 +0100	[thread overview]
Message-ID: <1479910341.4306.46.camel@gmx.de> (raw)
In-Reply-To: <d21cf0b2-5c62-5a49-8758-58793c454cc2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

On Wed, 2016-11-23 at 14:47 +0100, Michael Kerrisk (man-pages) wrote:
> Hello Mike,
> 
> On 11/23/2016 11:33 AM, Mike Galbraith wrote:
> > On Tue, 2016-11-22 at 16:59 +0100, Michael Kerrisk (man-pages)
> > wrote:
> > 
> > >        ┌─────────────────────────────────────────────────────┐
> > >        │FIXME                                                │
> > >        ├─────────────────────────────────────────────────────┤
> > >        │Regarding the previous paragraph...  My tests  indi‐ │
> > >        │cate  that writing *any* value to the autogroup file │
> > >        │causes the task group to get a lower priority.  This │
> > 
> > Because autogroup didn't call the then meaningless scale_load()...
> 
> So, does that mean that this buglet kicked in starting (only) in 
> Linux 4.7 with commit 2159197d66770ec01f75c93fb11dc66df81fd45b?

Yeah, that gave it teeth.

	-Mike
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WARNING: multiple messages have this Message-ID (diff)
From: Mike Galbraith <efault@gmx.de>
To: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@kernel.org>,
	linux-man <linux-man@vger.kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [patch] sched/autogroup: Fix 64bit kernel nice adjustment
Date: Wed, 23 Nov 2016 15:12:21 +0100	[thread overview]
Message-ID: <1479910341.4306.46.camel@gmx.de> (raw)
In-Reply-To: <d21cf0b2-5c62-5a49-8758-58793c454cc2@gmail.com>

On Wed, 2016-11-23 at 14:47 +0100, Michael Kerrisk (man-pages) wrote:
> Hello Mike,
> 
> On 11/23/2016 11:33 AM, Mike Galbraith wrote:
> > On Tue, 2016-11-22 at 16:59 +0100, Michael Kerrisk (man-pages)
> > wrote:
> > 
> > >        ┌─────────────────────────────────────────────────────┐
> > >        │FIXME                                                │
> > >        ├─────────────────────────────────────────────────────┤
> > >        │Regarding the previous paragraph...  My tests  indi‐ │
> > >        │cate  that writing *any* value to the autogroup file │
> > >        │causes the task group to get a lower priority.  This │
> > 
> > Because autogroup didn't call the then meaningless scale_load()...
> 
> So, does that mean that this buglet kicked in starting (only) in 
> Linux 4.7 with commit 2159197d66770ec01f75c93fb11dc66df81fd45b?

Yeah, that gave it teeth.

	-Mike

  parent reply	other threads:[~2016-11-23 14:12 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-22 15:59 RFC: documentation of the autogroup feature Michael Kerrisk (man-pages)
2016-11-23 10:33 ` [patch] sched/autogroup: Fix 64bit kernel nice adjustment Mike Galbraith
     [not found]   ` <1479897217.4306.6.camel-Mmb7MZpHnFY@public.gmane.org>
2016-11-23 13:47     ` Michael Kerrisk (man-pages)
2016-11-23 13:47       ` Michael Kerrisk (man-pages)
     [not found]       ` <d21cf0b2-5c62-5a49-8758-58793c454cc2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-23 14:12         ` Mike Galbraith [this message]
2016-11-23 14:12           ` Mike Galbraith
2016-11-23 14:20           ` Michael Kerrisk (man-pages)
     [not found]             ` <34cea28b-c8c7-31e3-e920-90f113d22abe-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-23 15:55               ` Mike Galbraith
2016-11-23 15:55                 ` Mike Galbraith
2016-11-24  6:24     ` [tip:sched/urgent] sched/autogroup: Fix 64-bit kernel nice level adjustment tip-bot for Mike Galbraith
2016-11-24  6:24       ` tip-bot for Mike Galbraith
2016-11-23 11:39 ` RFC: documentation of the autogroup feature Mike Galbraith
     [not found]   ` <1479901185.4306.38.camel-Mmb7MZpHnFY@public.gmane.org>
2016-11-23 13:54     ` Michael Kerrisk (man-pages)
2016-11-23 13:54       ` Michael Kerrisk (man-pages)
     [not found]       ` <327586fa-4672-d070-0ded-850654586273-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-23 15:33         ` Mike Galbraith
2016-11-23 15:33           ` Mike Galbraith
     [not found]           ` <1479915229.4306.106.camel-Mmb7MZpHnFY@public.gmane.org>
2016-11-23 16:04             ` Michael Kerrisk (man-pages)
2016-11-23 16:04               ` Michael Kerrisk (man-pages)
2016-11-23 17:11               ` Mike Galbraith
2016-11-24 21:41                 ` RFC: documentation of the autogroup feature [v2] Michael Kerrisk (man-pages)
2016-11-25 12:52                   ` Afzal Mohammed
2016-11-25 13:04                     ` Michael Kerrisk (man-pages)
2016-11-25 13:04                       ` Michael Kerrisk (man-pages)
     [not found]                   ` <c5a9acd3-6b60-192c-312e-2777f2d537c2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 13:02                     ` Mike Galbraith
2016-11-25 13:02                       ` Mike Galbraith
2016-11-25 15:04                       ` Michael Kerrisk (man-pages)
2016-11-25 15:51                         ` Mike Galbraith
     [not found]                           ` <1480089063.4075.80.camel-Mmb7MZpHnFY@public.gmane.org>
2016-11-25 16:08                             ` Michael Kerrisk (man-pages)
2016-11-25 16:08                               ` Michael Kerrisk (man-pages)
     [not found]                               ` <d3d491d3-0770-d017-4f3c-43d88346835c-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 16:18                                 ` Peter Zijlstra
2016-11-25 16:18                                   ` Peter Zijlstra
     [not found]                                   ` <20161125161810.GR3092-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2016-11-25 16:34                                     ` Michael Kerrisk (man-pages)
2016-11-25 16:34                                       ` Michael Kerrisk (man-pages)
     [not found]                                       ` <2cc53b76-668b-edf1-6aa7-e6cb5a9801e1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 20:54                                         ` Michael Kerrisk (man-pages)
2016-11-25 20:54                                           ` Michael Kerrisk (man-pages)
     [not found]                                           ` <af075c46-152a-0392-d33f-c7956d3c8a0b-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 21:49                                             ` Peter Zijlstra
2016-11-25 21:49                                               ` Peter Zijlstra
     [not found]                                               ` <20161125214936.GB3045-IIpfhp3q70z/8w/KjCw3T+5/BudmfyzbbVWyRVo5IupeoWH0uzbU5w@public.gmane.org>
2016-11-29  7:43                                                 ` Michael Kerrisk (man-pages)
2016-11-29  7:43                                                   ` Michael Kerrisk (man-pages)
     [not found]                                                   ` <755aba1b-9bf4-0277-0628-b27e725ee2f9-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-29 11:46                                                     ` Peter Zijlstra
2016-11-29 11:46                                                       ` Peter Zijlstra
     [not found]                                                       ` <20161129114629.GG3092-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2016-11-29 13:44                                                         ` Michael Kerrisk (man-pages)
2016-11-29 13:44                                                           ` Michael Kerrisk (man-pages)
     [not found]                         ` <ca16c155-22be-df06-4f2d-4337b72381de-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 15:48                           ` Michael Kerrisk (man-pages)
2016-11-25 15:48                             ` Michael Kerrisk (man-pages)
2016-11-25 16:04                           ` Peter Zijlstra
2016-11-25 16:04                             ` Peter Zijlstra
     [not found]                             ` <20161125160456.GP3092-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2016-11-25 16:13                               ` Peter Zijlstra
2016-11-25 16:13                                 ` Peter Zijlstra
2016-11-25 16:33                               ` Michael Kerrisk (man-pages)
2016-11-25 16:33                                 ` Michael Kerrisk (man-pages)
     [not found]                                 ` <c0f61369-9601-0c90-8b85-61e75e4f4e82-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-25 22:48                                   ` Peter Zijlstra
2016-11-25 22:48                                     ` Peter Zijlstra
2016-11-23 16:05             ` RFC: documentation of the autogroup feature Michael Kerrisk (man-pages)
2016-11-23 16:05               ` Michael Kerrisk (man-pages)
     [not found]               ` <fc3ae5c6-5a50-e991-71fd-b544096bbe5c-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-23 17:19                 ` Mike Galbraith
2016-11-23 17:19                   ` Mike Galbraith
     [not found]                   ` <1479921544.4306.157.camel-Mmb7MZpHnFY@public.gmane.org>
2016-11-23 22:12                     ` Michael Kerrisk (man-pages)
2016-11-23 22:12                       ` Michael Kerrisk (man-pages)
2016-11-27 21:13             ` Michael Kerrisk (man-pages)
2016-11-27 21:13               ` Michael Kerrisk (man-pages)
     [not found]               ` <8614679c-b1d3-3b35-193d-2ab6eac45aff-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-28  1:46                 ` Mike Galbraith
2016-11-28  1:46                   ` Mike Galbraith
     [not found]                   ` <1127218a-dd9b-71a8-845d-3a83969632fc@gmail.com>
     [not found]                     ` <1127218a-dd9b-71a8-845d-3a83969632fc-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-11-29  9:10                       ` Michael Kerrisk (man-pages)
2016-11-29  9:10                         ` Michael Kerrisk (man-pages)
     [not found]                         ` <CAKgNAkiLafr7KJNAo+_kwKQB7ueO-oontNL_FQrGtqitmJpEDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-29 13:46                           ` Mike Galbraith
2016-11-29 13:46                             ` Mike Galbraith

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