From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>
Cc: "Michael Kerrisk (man-pages)"
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"Serge E. Hallyn" <serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>,
linux-man <linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
lkml <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"open list:CONTROL GROUP (CGROUP)"
<cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: cgroups(7): documenting /sys/kernel/cgroup files
Date: Wed, 10 Jan 2018 06:02:39 -0800 [thread overview]
Message-ID: <20180110140239.GX3668920@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20180110124407.GA26913-B3w7+ongkCiLfgCeKHXN1g2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
Hello,
On Wed, Jan 10, 2018 at 04:44:14AM -0800, Roman Gushchin wrote:
> cgroup.threads is not listed because it's not delegatable (doesn't have
> CFTYPE_NS_DELEGATABLE flag set). I don't know if it was intended or just
> an accident (I believe the latter).
So, thread mode isn't delegatble. Marking a cgroup as threaded turns
that subtree threaded and join the parent's domain, so we can't allow
delegation roots to be turned threaded - just like we can't mark the
root cgroup threaded, and I'm not really not sure what it means to
delegate a portion of threaded subtree.
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Roman Gushchin <guro@fb.com>
Cc: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
"Serge E. Hallyn" <serge@hallyn.com>,
linux-man <linux-man@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
"open list:CONTROL GROUP (CGROUP)" <cgroups@vger.kernel.org>
Subject: Re: cgroups(7): documenting /sys/kernel/cgroup files
Date: Wed, 10 Jan 2018 06:02:39 -0800 [thread overview]
Message-ID: <20180110140239.GX3668920@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20180110124407.GA26913@castle.DHCP.thefacebook.com>
Hello,
On Wed, Jan 10, 2018 at 04:44:14AM -0800, Roman Gushchin wrote:
> cgroup.threads is not listed because it's not delegatable (doesn't have
> CFTYPE_NS_DELEGATABLE flag set). I don't know if it was intended or just
> an accident (I believe the latter).
So, thread mode isn't delegatble. Marking a cgroup as threaded turns
that subtree threaded and join the parent's domain, so we can't allow
delegation roots to be turned threaded - just like we can't mark the
root cgroup threaded, and I'm not really not sure what it means to
delegate a portion of threaded subtree.
Thanks.
--
tejun
next prev parent reply other threads:[~2018-01-10 14:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-08 21:11 cgroups(7): documenting /sys/kernel/cgroup files Michael Kerrisk (man-pages)
2018-01-08 21:11 ` Michael Kerrisk (man-pages)
2018-01-09 11:28 ` Roman Gushchin
2018-01-09 11:28 ` Roman Gushchin
[not found] ` <20180109112811.GA31373-B3w7+ongkCiLfgCeKHXN1g2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-09 18:52 ` Michael Kerrisk (man-pages)
2018-01-09 18:52 ` Michael Kerrisk (man-pages)
[not found] ` <ff431fd8-f1c1-ed8d-2d69-64ea83a8a505-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-10 4:23 ` Michael Kerrisk (man-pages)
2018-01-10 4:23 ` Michael Kerrisk (man-pages)
2018-01-10 12:44 ` Roman Gushchin
2018-01-10 12:44 ` Roman Gushchin
[not found] ` <20180110124407.GA26913-B3w7+ongkCiLfgCeKHXN1g2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-10 14:02 ` Tejun Heo [this message]
2018-01-10 14:02 ` Tejun Heo
2018-01-10 14:32 ` Roman Gushchin
2018-01-10 17:31 ` Michael Kerrisk (man-pages)
[not found] ` <CAKgNAkhDY09gauX-1Ut4SoL9DEoxj9wJ8SjS6h-Ntc90xeWi1A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-01-10 17:33 ` Tejun Heo
2018-01-10 17:33 ` Tejun Heo
[not found] ` <20180110173340.GG3668920-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-10 17:39 ` Tejun Heo
2018-01-10 17:39 ` Tejun Heo
[not found] ` <20180110140239.GX3668920-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-10 17:44 ` Tejun Heo
2018-01-10 17:44 ` Tejun Heo
[not found] ` <20180110174457.GI3668920-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-10 19:14 ` Michael Kerrisk (man-pages)
2018-01-10 19:14 ` Michael Kerrisk (man-pages)
2018-01-10 17:45 ` Tejun Heo
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