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From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Alexander Nikiforov
	<a.nikiforov-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: "Daniel P. Berrange"
	<berrange-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Frederic Weisbecker
	<fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Containers
	<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
	Daniel Walsh <dwalsh-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
	Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@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__20996.7164243155$1334676248$gmane$org@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

  parent reply	other threads:[~2012-04-17 15:23 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-11 18:57 [RFD] Merge task counter into memcg Frederic Weisbecker
2012-04-11 18:57 ` Frederic Weisbecker
     [not found] ` <20120411185715.GA4317-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-11 19:21   ` Glauber Costa
2012-04-11 19:21     ` Glauber Costa
2012-04-12 11:19     ` Frederic Weisbecker
2012-04-12 11:19       ` Frederic Weisbecker
     [not found]     ` <4F85D9C6.5000202-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 11:19       ` Frederic Weisbecker
2012-04-12  0:56   ` KAMEZAWA Hiroyuki
2012-04-12  1:07   ` Johannes Weiner
2012-04-12  3:56   ` Alexander Nikiforov
     [not found]     ` <4F86527C.2080507-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2012-04-17  1:09       ` Frederic Weisbecker
2012-04-17  1:09     ` Frederic Weisbecker
2012-04-17  1:09       ` Frederic Weisbecker
2012-04-17  6:45       ` Alexander Nikiforov
2012-04-17  6:45         ` Alexander Nikiforov
2012-04-17 15:23         ` Tejun Heo
2012-04-17 15:23           ` Tejun Heo
     [not found]           ` <20120417152350.GC32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-19  3:34             ` Alexander Nikiforov
2012-04-19  3:34               ` Alexander Nikiforov
     [not found]         ` <4F8D1171.1090504-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2012-04-17 15:23           ` Tejun Heo [this message]
     [not found]       ` <20120417010902.GA14646-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-17  6:45         ` Alexander Nikiforov
2012-04-12  4:00   ` Alexander Nikiforov
2012-04-12  4:00     ` Alexander Nikiforov
2012-04-12  0:56 ` KAMEZAWA Hiroyuki
2012-04-12  0:56   ` KAMEZAWA Hiroyuki
     [not found]   ` <4F862851.3040208-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-12 11:32     ` Frederic Weisbecker
2012-04-12 11:32       ` Frederic Weisbecker
2012-04-12 11:43       ` Glauber Costa
2012-04-12 11:43         ` Glauber Costa
     [not found]         ` <4F86BFC6.2050400-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 12:32           ` Johannes Weiner
2012-04-12 12:32         ` Johannes Weiner
2012-04-12 12:32           ` Johannes Weiner
     [not found]           ` <20120412123256.GI1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 13:12             ` Glauber Costa
2012-04-12 13:12               ` Glauber Costa
2012-04-12 15:30               ` Johannes Weiner
2012-04-12 15:30                 ` Johannes Weiner
     [not found]                 ` <20120412153055.GL1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 16:38                   ` Tejun Heo
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
2012-04-12 17:04                         ` Glauber Costa
2012-04-17 15:13                         ` Tejun Heo
2012-04-17 15:13                           ` Tejun Heo
     [not found]                           ` <20120417151352.GA32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-17 15:27                             ` Glauber Costa
2012-04-17 15:27                               ` Glauber Costa
     [not found]                         ` <4F870B18.5060703-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-17 15:13                           ` Tejun Heo
2012-04-12 17:13                       ` [RFD] Merge task counter into memcg Glauber Costa
2012-04-12 17:13                         ` Glauber Costa
2012-04-12 17:23                       ` Johannes Weiner
2012-04-12 17:23                     ` Johannes Weiner
2012-04-12 17:23                       ` Johannes Weiner
     [not found]                       ` <20120412172309.GM1787-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-12 17:41                         ` Tejun Heo
2012-04-12 17:41                           ` Tejun Heo
2012-04-12 17:53                           ` Glauber Costa
2012-04-12 17:53                             ` Glauber Costa
2012-04-13  1:42                           ` KAMEZAWA Hiroyuki
2012-04-13  1:42                             ` KAMEZAWA Hiroyuki
2012-04-17 15:41                             ` Tejun Heo
2012-04-17 15:41                               ` Tejun Heo
2012-04-17 16:52                               ` Glauber Costa
2012-04-17 16:52                                 ` Glauber Costa
     [not found]                                 ` <4F8D9FC4.3080800-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-18  6:51                                   ` KAMEZAWA Hiroyuki
2012-04-18  6:51                                 ` KAMEZAWA Hiroyuki
2012-04-18  6:51                                   ` KAMEZAWA Hiroyuki
2012-04-18  7:53                                   ` Frederic Weisbecker
2012-04-18  7:53                                     ` Frederic Weisbecker
2012-04-18  8:42                                     ` KAMEZAWA Hiroyuki
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
2012-04-18  9:12                                       ` Frederic Weisbecker
2012-04-18  9:12                                         ` Frederic Weisbecker
2012-04-18 10:39                                       ` Johannes Weiner
2012-04-18 10:39                                         ` Johannes Weiner
2012-04-18 11:00                                         ` KAMEZAWA Hiroyuki
2012-04-18 11:00                                           ` KAMEZAWA Hiroyuki
     [not found]                                         ` <20120418103930.GA1771-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2012-04-18 11:00                                           ` KAMEZAWA Hiroyuki
     [not found]                                     ` <CAFTL4hw3C4s6VS07pJzdBawv0ugKJJa+Vnb-Q_9FrWEq4=ka9Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-18  8:42                                       ` KAMEZAWA Hiroyuki
     [not found]                                   ` <4F8E646B.1020807-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-18  7:53                                     ` Frederic Weisbecker
     [not found]                               ` <20120417154117.GE32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-17 16:52                                 ` Glauber Costa
     [not found]                             ` <4F878480.60505-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-13  1:50                               ` Glauber Costa
2012-04-13  1:50                                 ` Glauber Costa
2012-04-13  2:48                                 ` KAMEZAWA Hiroyuki
2012-04-13  2:48                                   ` KAMEZAWA Hiroyuki
     [not found]                                 ` <4F87865F.5060701-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-13  2:48                                   ` KAMEZAWA Hiroyuki
2012-04-17 15:41                               ` 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
2012-04-12 16:54                   ` Glauber Costa
2012-04-12 16:54                 ` Glauber Costa
2012-04-12 16:54                   ` Glauber Costa
     [not found]               ` <4F86D4BD.1040305-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 15:30                 ` Johannes Weiner
     [not found]       ` <20120412113217.GB11455-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-12 11:43         ` Glauber Costa
2012-04-12  1:07 ` Johannes Weiner
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  2:15       ` Glauber Costa
2012-04-12  3:26     ` Li Zefan
2012-04-12  3:26       ` Li Zefan
2012-04-12 14:55     ` Frederic Weisbecker
2012-04-12 14:55       ` Frederic Weisbecker
     [not found]       ` <20120412145507.GC11455-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-12 16:34         ` Glauber Costa
2012-04-12 16:34           ` Glauber Costa
     [not found]           ` <4F87042A.2000902-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-12 16:59             ` Frederic Weisbecker
2012-04-12 16:59               ` Frederic Weisbecker
2012-04-17 15:17               ` Tejun Heo
2012-04-17 15:17                 ` Tejun Heo
2012-04-18  6:54                 ` Frederic Weisbecker
2012-04-18  6:54                   ` Frederic Weisbecker
2012-04-18  8:10                   ` 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
2012-04-18 12:00                     ` Glauber Costa
2012-04-18 12:00                       ` Glauber Costa
2012-04-18  8:10                   ` Frederic Weisbecker
     [not found]                 ` <20120417151753.GB32402-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-18  6:54                   ` Frederic Weisbecker
     [not found]               ` <20120412165922.GA12484-oHC15RC7JGTpAmv0O++HtFaTQe2KTcn/@public.gmane.org>
2012-04-17 15:17                 ` Tejun Heo
2012-04-11 18:57 Frederic Weisbecker

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