From: Li Zefan <lizf@cn.fujitsu.com>
To: Paul Menage <menage@google.com>
Cc: akpm@linux-foundation.org, bblum@andrew.cmu.edu,
linux-kernel@vger.kernel.org,
containers@lists.linux-foundation.org
Subject: Re: [PATCH 8/8] Adds ability to move all threads in a process to a new cgroup atomically
Date: Thu, 20 Aug 2009 11:00:26 +0800 [thread overview]
Message-ID: <4A8CBC4A.4030502@cn.fujitsu.com> (raw)
In-Reply-To: <20090818235848.22531.152.stgit@menage.mtv.corp.google.com>
Paul Menage wrote:
> From: Ben Blum <bblum@google.com>
>
>
> Adds ability to move all threads in a process to a new cgroup atomically
>
> This patch adds functionality that enables users to move all threads in a
> threadgroup at once to a cgroup by writing the tgid to the 'cgroup.procs'
> file. This current implementation makes use of a per-threadgroup rwsem that's
> taken for reading in the fork() path to prevent newly forking threads within
> the threadgroup from "escaping" while the move is in progress.
>
> Cgroups subsystems that need to perform per-thread actions in their
> "attach" callback are (currently) responsible for doing their own
> synchronization, since this occurs outside of the critical section
> that locks against cloning within a thread group.
>
> Signed-off-by: Ben Blum <bblum@google.com>
> Signed-off-by: Paul Menage <menage@google.com>
>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
prev parent reply other threads:[~2009-08-20 3:01 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-18 23:58 [PATCH 0/8] CGroups: cgroup memberlist enhancements/fixes Paul Menage
2009-08-18 23:58 ` [PATCH 1/8] Revert commit 8827c288feb7810185aa7c2e37537202fc709869 Paul Menage
2009-08-20 2:34 ` Li Zefan
2009-08-20 2:41 ` Paul Menage
2009-08-20 3:11 ` Li Zefan
2009-08-20 3:13 ` Paul Menage
2009-08-20 3:17 ` Li Zefan
2009-08-20 4:40 ` Matt Helsley
2009-08-20 4:49 ` Paul Menage
2009-08-20 21:13 ` Andrew Morton
2009-08-18 23:58 ` [PATCH 2/8] Adds a read-only "procs" file similar to "tasks" that shows only unique tgids Paul Menage
2009-08-20 2:34 ` Li Zefan
2009-08-18 23:58 ` [PATCH 3/8] Ensures correct concurrent opening/reading of pidlists across pid namespaces Paul Menage
2009-08-18 23:58 ` [PATCH 4/8] Use vmalloc for large cgroups pidlist allocations Paul Menage
2009-08-20 2:37 ` Li Zefan
2009-08-20 2:41 ` Paul Menage
2009-08-20 2:54 ` Li Zefan
2009-08-20 3:04 ` Paul Menage
2009-08-20 21:14 ` Andrew Morton
2009-08-20 22:35 ` Jonathan Corbet
2009-08-20 22:56 ` David Rientjes
2009-08-21 0:53 ` Li Zefan
2009-08-18 23:58 ` [PATCH 5/8] Changes css_set freeing mechanism to be under RCU Paul Menage
2009-08-20 2:38 ` Li Zefan
2009-08-18 23:58 ` [PATCH 6/8] Lets ss->can_attach and ss->attach do whole threadgroups at a time Paul Menage
2009-08-20 3:06 ` Li Zefan
2009-08-20 4:38 ` Matt Helsley
2009-08-18 23:58 ` [PATCH 7/8] Adds functionality to read/write lock CLONE_THREAD fork()ing per-threadgroup Paul Menage
2009-08-20 2:39 ` Li Zefan
2009-08-20 2:45 ` Paul Menage
2009-08-20 21:13 ` Andrew Morton
2009-08-20 21:16 ` Paul Menage
2009-08-21 4:24 ` Ben Blum
2009-08-21 4:50 ` Andrew Morton
2009-08-21 4:58 ` Paul Menage
2009-08-18 23:58 ` [PATCH 8/8] Adds ability to move all threads in a process to a new cgroup atomically Paul Menage
2009-08-20 3:00 ` Li Zefan [this message]
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