From: Dhaval Giani <dhaval-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Dmitry Adamushko
<dmitry.adamushko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Peter Zijlstra
<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
Srivatsa Vaddagiri
<vatsa-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>,
containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: Re: Hang with fair cgroup scheduler (reproducer is attached.)
Date: Sat, 15 Dec 2007 16:20:36 +0530 [thread overview]
Message-ID: <20071215105036.GB26325@linux.vnet.ibm.com> (raw)
In-Reply-To: <b647ffbd0712150222p30cac9f9i772c2a2c4e05a4a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Sat, Dec 15, 2007 at 11:22:08AM +0100, Dmitry Adamushko wrote:
> On 14/12/2007, Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org> wrote:
> >
> > On Fri, 14 Dec 2007, Dmitry Adamushko wrote:
> >
> > >
> > > argh... it's a consequence of the 'current is not kept within the tree" indeed.
> > >
> >
> > Thanks Dmitry for tracking this down.
>
> My analysis was flawed (hmm... me was under control of Belgium beer :-)
>
> The task in not on the runqueue (p->on_rq == 0) at the moment when
> put_prev_task_fair() and set_curr_task_fair() get its turn in
> sched_move_task()... so dequeue/enqueue_entity() are not triggered,
> that's good.
>
Again, I am probably missing something, but if on_rq == 0, then how is
set_curr_task_fair() getting called?
--
regards,
Dhaval
next prev parent reply other threads:[~2007-12-15 10:50 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 7:18 Hang with fair cgroup scheduler (reproducer is attached.) KAMEZAWA Hiroyuki
[not found] ` <20071214161834.034e6efe.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 8:17 ` KAMEZAWA Hiroyuki
[not found] ` <20071214171759.59f7ba57.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 9:49 ` Ingo Molnar
[not found] ` <20071214094909.GG11266-X9Un+BFzKDI@public.gmane.org>
2007-12-14 10:58 ` KAMEZAWA Hiroyuki
[not found] ` <20071214195837.0d3511db.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 11:48 ` Dhaval Giani
2007-12-14 12:47 ` Dmitry Adamushko
[not found] ` <20071214141528.GA6161-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 14:24 ` kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A
[not found] ` <20442799.1197642268756.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 15:36 ` Dhaval Giani
[not found] ` <20071214153607.GB23670-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 15:38 ` Dhaval Giani
[not found] ` <20071214153823.GC23670-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 16:25 ` Dmitry Adamushko
[not found] ` <b647ffbd0712140825h4f541be0xa7a7866e70b3af7a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 19:51 ` Dmitry Adamushko
[not found] ` <b647ffbd0712141151k697d9bbemda9a7e90515e4400-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 21:33 ` Steven Rostedt
[not found] ` <Pine.LNX.4.58.0712141614340.22005-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2007-12-15 10:22 ` Dmitry Adamushko
[not found] ` <b647ffbd0712150222p30cac9f9i772c2a2c4e05a4a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-15 10:50 ` Dhaval Giani [this message]
[not found] ` <20071215105036.GB26325-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-15 11:15 ` Dmitry Adamushko
2007-12-15 23:44 ` Dmitry Adamushko
[not found] ` <b647ffbd0712151544n2dfad101r2d306d393e8550ff-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-16 0:00 ` Dmitry Adamushko
[not found] ` <b647ffbd0712151600s14e3f355we5ee6348b4d484cc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-16 4:28 ` Dhaval Giani
[not found] ` <20071216042821.GA8494-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-17 1:12 ` KAMEZAWA Hiroyuki
[not found] ` <20071217101245.76562518.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-17 14:45 ` Ingo Molnar
2007-12-16 8:55 ` Ingo Molnar
[not found] ` <20071216085559.GB20790-X9Un+BFzKDI@public.gmane.org>
2007-12-16 10:06 ` Dmitry Adamushko
[not found] ` <b647ffbd0712140447kfba5945ybde40f18653dd164-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 12:50 ` kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A
2007-12-14 14:15 ` Dhaval Giani
2007-12-14 9:48 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2007-12-16 13:01 Dmitry Adamushko
2007-12-16 15:32 ` Steven Rostedt
2007-12-16 23:17 ` Steven Rostedt
[not found] ` <Pine.LNX.4.58.0712161801590.27494-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2007-12-17 10:23 ` Dmitry Adamushko
[not found] ` <b647ffbd0712170223n13509130s7850c081f3b6c1e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-17 17:58 ` Steven Rostedt
[not found] ` <Pine.LNX.4.58.0712171227230.5678-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2007-12-17 22:52 ` Dmitry Adamushko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20071215105036.GB26325@linux.vnet.ibm.com \
--to=dhaval-23vcf4htsmix0ybbhkvfkdbpr1lh4cv8@public.gmane.org \
--cc=a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org \
--cc=akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org \
--cc=containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org \
--cc=dmitry.adamushko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=mingo-X9Un+BFzKDI@public.gmane.org \
--cc=rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org \
--cc=vatsa-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox