From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Alexander Nikiforov
<a.nikiforov-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Frederic Weisbecker
<fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
KAMEZAWA Hiroyuki
<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
Daniel Walsh <dwalsh-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"Daniel P. Berrange"
<berrange-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
Subject: Re: [RFD] Merge task counter into memcg
Date: Tue, 17 Apr 2012 08:23:50 -0700 [thread overview]
Message-ID: <20120417152350.GC32402@google.com> (raw)
In-Reply-To: <4F8D1171.1090504-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Hello,
On Tue, Apr 17, 2012 at 10:45:05AM +0400, Alexander Nikiforov wrote:
> between them. Now we have only 1 way to get notification about tasks
> file - inotify(), but this approach works only if you work from
> userspace with file (e.g. create struct file, for example with echo
> $$ /sys/abc/tasks), but when something happens from kernel side
> (do_fork()/do_exit) we cannot get any event about group of the
> process (we can scan tasks file and count number of PID, or work
> with
> waitpid(), but IMHO this is ugly solutions)
Wouldn't simply generating FS_MODIFY event on the tasks file do the
trick?
Thanks.
--
tejun
next prev parent reply other threads:[~2012-04-17 15:23 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-11 18:57 [RFD] Merge task counter into memcg Frederic Weisbecker
[not found] ` <20120411185715.GA4317-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-11 19:21 ` Glauber Costa
[not found] ` <4F85D9C6.5000202-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 11:19 ` Frederic Weisbecker
2012-04-12 0:56 ` KAMEZAWA Hiroyuki
[not found] ` <4F862851.3040208-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-12 11:32 ` Frederic Weisbecker
[not found] ` <20120412113217.GB11455-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-12 11:43 ` Glauber Costa
[not found] ` <4F86BFC6.2050400-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 12:32 ` Johannes Weiner
[not found] ` <20120412123256.GI1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 13:12 ` Glauber Costa
[not found] ` <4F86D4BD.1040305-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 15:30 ` Johannes Weiner
[not found] ` <20120412153055.GL1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 16:38 ` Tejun Heo
[not found] ` <20120412163825.GB13069-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-12 17:04 ` Cgroup in a single hierarchy (Was: Re: [RFD] Merge task counter into memcg) Glauber Costa
[not found] ` <4F870B18.5060703-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-17 15:13 ` Tejun Heo
[not found] ` <20120417151352.GA32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-17 15:27 ` Glauber Costa
2012-04-12 17:13 ` [RFD] Merge task counter into memcg Glauber Costa
2012-04-12 17:23 ` Johannes Weiner
[not found] ` <20120412172309.GM1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 17:41 ` Tejun Heo
[not found] ` <20120412174155.GC13069-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-12 17:53 ` Glauber Costa
2012-04-13 1:42 ` KAMEZAWA Hiroyuki
[not found] ` <4F878480.60505-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-13 1:50 ` Glauber Costa
[not found] ` <4F87865F.5060701-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-13 2:48 ` KAMEZAWA Hiroyuki
2012-04-17 15:41 ` Tejun Heo
[not found] ` <20120417154117.GE32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-17 16:52 ` Glauber Costa
[not found] ` <4F8D9FC4.3080800-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-18 6:51 ` KAMEZAWA Hiroyuki
[not found] ` <4F8E646B.1020807-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-18 7:53 ` Frederic Weisbecker
[not found] ` <CAFTL4hw3C4s6VS07pJzdBawv0ugKJJa+Vnb-Q_9FrWEq4=ka9Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-18 8:42 ` KAMEZAWA Hiroyuki
[not found] ` <4F8E7E76.3020202-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-18 9:12 ` Frederic Weisbecker
2012-04-18 10:39 ` Johannes Weiner
[not found] ` <20120418103930.GA1771-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-18 11:00 ` KAMEZAWA Hiroyuki
2012-04-12 16:54 ` Glauber Costa
2012-04-12 1:07 ` Johannes Weiner
[not found] ` <20120412010745.GE1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 2:15 ` Glauber Costa
2012-04-12 3:26 ` Li Zefan
2012-04-12 14:55 ` Frederic Weisbecker
[not found] ` <20120412145507.GC11455-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-12 16:34 ` Glauber Costa
[not found] ` <4F87042A.2000902-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 16:59 ` Frederic Weisbecker
[not found] ` <20120412165922.GA12484-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-17 15:17 ` Tejun Heo
[not found] ` <20120417151753.GB32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-18 6:54 ` Frederic Weisbecker
2012-04-18 8:10 ` Frederic Weisbecker
[not found] ` <CAFTL4hxXT+hXWEnKop84JQ8ieHX4e=otpHnXYxdxaPgsiZYCiw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-18 12:00 ` Glauber Costa
2012-04-12 3:56 ` Alexander Nikiforov
[not found] ` <4F86527C.2080507-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2012-04-17 1:09 ` Frederic Weisbecker
[not found] ` <20120417010902.GA14646-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-17 6:45 ` Alexander Nikiforov
[not found] ` <4F8D1171.1090504-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2012-04-17 15:23 ` Tejun Heo [this message]
[not found] ` <20120417152350.GC32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-19 3:34 ` Alexander Nikiforov
2012-04-12 4:00 ` Alexander Nikiforov
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