From: Tejun Heo <tj@kernel.org>
To: Parav Pandit <pandit.parav@gmail.com>
Cc: cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
lizefan@huawei.com, Johannes Weiner <hannes@cmpxchg.org>,
Doug Ledford <dledford@redhat.com>,
Liran Liss <liranl@mellanox.com>,
"Hefty, Sean" <sean.hefty@intel.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Haggai Eran <haggaie@mellanox.com>,
Jonathan Corbet <corbet@lwn.net>,
james.l.morris@oracle.com, serge@hallyn.com,
Or Gerlitz <ogerlitz@mellanox.com>,
Matan Barak <matanb@mellanox.com>,
raindel@mellanox.com, akpm@linux-foundation.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup
Date: Thu, 7 Jan 2016 15:41:10 -0500 [thread overview]
Message-ID: <20160107204110.GH1898@mtj.duckdns.org> (raw)
In-Reply-To: <CAG53R5UuCNwCKWAuub=n3FkJR6Z5oyF6cVPeW=5nk-JrURY=jw@mail.gmail.com>
Hello, Parav.
On Fri, Jan 08, 2016 at 02:09:23AM +0530, Parav Pandit wrote:
> > Hmmm, what happens after the following?
> >
> > 1. A process allocates some rdma resources and get registered on the
> > hash table.
> >
> > 2. The process gets migrated to a different cgroup.
> >
> > 3. The process allocates more rdma resources.
> >
> > Which cgroup would the resources from #3 be attributed to?
>
> Since the pid/tgid of the process doesn't change in step_3, it
> allocates from original cgroup of step_1.
It shouldn't work that way.
> However in next patch V2, as described below, since IB resource will
> store rdma_cg pointer,
> in step_3, new resource will be allocated from new cgroup.
> old resource will be freed from older cgroup.
> This is what you are expecting, right?
Yeap.
Thanks.
--
tejun
next prev parent reply other threads:[~2016-01-07 20:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-05 18:58 [PATCHv1 0/6] rdma controller support Parav Pandit
2016-01-05 18:58 ` [PATCHv1 1/6] rdmacg: Added rdma cgroup header file Parav Pandit
2016-01-05 18:58 ` [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Parav Pandit
2016-01-05 21:56 ` Tejun Heo
2016-01-06 23:16 ` Parav Pandit
2016-01-07 15:07 ` Tejun Heo
2016-01-07 19:40 ` Parav Pandit
2016-01-05 18:58 ` [PATCHv1 3/6] rdmacg: implements " Parav Pandit
2016-01-05 22:01 ` Tejun Heo
2016-01-06 23:33 ` Parav Pandit
2016-01-07 15:29 ` Tejun Heo
2016-01-07 20:25 ` Parav Pandit
2016-01-07 20:28 ` Tejun Heo
2016-01-07 20:39 ` Parav Pandit
2016-01-07 20:41 ` Tejun Heo [this message]
2016-01-05 18:58 ` [PATCHv1 4/6] IB/core: rdmacg support infrastructure APIs Parav Pandit
2016-01-05 18:58 ` [PATCHv1 5/6] IB/core: use rdma cgroup for resource accounting Parav Pandit
2016-01-05 18:58 ` [PATCHv1 6/6] rdmacg: Added documentation for rdma controller Parav Pandit
2016-01-05 21:53 ` Tejun Heo
2016-01-06 22:44 ` Parav Pandit
2016-01-06 22:57 ` Tejun Heo
2016-01-06 23:52 ` Parav Pandit
2016-01-07 15:42 ` Tejun Heo
2016-01-07 19:43 ` Parav Pandit
2016-01-05 21:56 ` [PATCHv1 0/6] rdma controller support Tejun Heo
2016-01-06 23:13 ` Parav Pandit
2016-01-07 15:07 ` Tejun Heo
2016-01-07 20:01 ` Parav Pandit
2016-01-07 20:06 ` Tejun Heo
2016-01-07 20:32 ` Parav Pandit
2016-01-07 20:34 ` Tejun Heo
2016-01-07 20:46 ` Parav Pandit
2016-01-07 20:49 ` Tejun Heo
2016-01-07 20:50 ` Tejun Heo
2016-01-07 21:01 ` Parav Pandit
2016-01-07 21:07 ` Tejun Heo
2016-01-07 21:10 ` Parav Pandit
2016-01-07 21:04 ` Parav Pandit
2016-01-07 21:08 ` Tejun Heo
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=20160107204110.GH1898@mtj.duckdns.org \
--to=tj@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=cgroups@vger.kernel.org \
--cc=corbet@lwn.net \
--cc=dledford@redhat.com \
--cc=haggaie@mellanox.com \
--cc=hannes@cmpxchg.org \
--cc=james.l.morris@oracle.com \
--cc=jgunthorpe@obsidianresearch.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=liranl@mellanox.com \
--cc=lizefan@huawei.com \
--cc=matanb@mellanox.com \
--cc=ogerlitz@mellanox.com \
--cc=pandit.parav@gmail.com \
--cc=raindel@mellanox.com \
--cc=sean.hefty@intel.com \
--cc=serge@hallyn.com \
/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