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From: Christoph Hellwig <hch@lst.de>
To: Matan Barak <matanb@mellanox.com>
Cc: Parav Pandit <pandit.parav@gmail.com>,
	Christoph Hellwig <hch@lst.de>, Tejun Heo <tj@kernel.org>,
	cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-rdma@vger.kernel.org, Li Zefan <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>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-security-module@vger.kernel.org
Subject: Re: [PATCHv12 1/3] rdmacg: Added rdma cgroup controller
Date: Sat, 10 Sep 2016 18:14:42 +0200	[thread overview]
Message-ID: <20160910161442.GC29259@lst.de> (raw)
In-Reply-To: <ae3adcc4-253e-f87c-6ff6-202c91599f48@mellanox.com>

On Wed, Sep 07, 2016 at 11:51:42AM +0300, Matan Barak wrote:
> All recent proposals of the new ABI schema deals with extending the 
> flexibility of the current schema by letting drivers define their specific 
> types, actions, attributes, etc. Even more than that, the dispatching 
> starts from the driver and it chooses if it wants to use the common RDMA 
> core layer or have it's own wise implementation instead.
> Some drivers might even prefer not to implement the current verbs types.
> These decisions were made in the OFVWG meetings.

OFVWG meetings have absolutely zero relevance for Linux development.
More "flexibility" for drivers just means giving up on designing a
coherent API and leaving it to drivers authors to add crap to their
own drivers.  That's a major step backwards.

> Sounds reasonable, but what about drivers which ignore the common code and 
> implement it in their own way? What about drivers which don't support the 
> standard RDMA types at all?

They should not be using the code in drivers/infiniband.  usnic is such
an example of a driver that should never have been added in it's current
form.

  parent reply	other threads:[~2016-09-10 16:14 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-31  8:37 [PATCHv12 0/3] rdmacg: IB/core: rdma controller support Parav Pandit
2016-08-31  8:37 ` [PATCHv12 1/3] rdmacg: Added rdma cgroup controller Parav Pandit
2016-08-31  9:38   ` Leon Romanovsky
2016-09-07 15:07     ` Parav Pandit
2016-09-08  6:12       ` Leon Romanovsky
2016-09-08 10:20         ` Parav Pandit
2016-08-31 15:07   ` Matan Barak
2016-08-31 21:16     ` Tejun Heo
2016-09-01  7:25       ` Matan Barak
2016-09-01  8:44         ` Christoph Hellwig
2016-09-07  7:55           ` Parav Pandit
2016-09-07  8:51             ` Matan Barak
2016-09-07 14:54               ` Parav Pandit
2016-09-10 16:14               ` Christoph Hellwig [this message]
2016-09-10 17:01                 ` Jason Gunthorpe
2016-09-11  8:07                   ` Matan Barak
2016-09-11 13:34                   ` Christoph Hellwig
2016-09-11 14:35                     ` Leon Romanovsky
2016-09-11 17:14                       ` Jason Gunthorpe
2016-09-11 17:24                         ` Christoph Hellwig
2016-09-11 17:52                           ` Jason Gunthorpe
2016-09-12  5:07                             ` Leon Romanovsky
2016-09-14  7:06                               ` Parav Pandit
2016-09-14  8:14                                 ` Matan Barak
2016-09-14  9:19                                   ` Parav Pandit
2016-09-15 18:56                                 ` Leon Romanovsky
2016-09-21  4:43                                   ` Parav Pandit
2016-09-21 14:26                                     ` Tejun Heo
2016-09-21 16:02                                       ` Parav Pandit
2016-10-04 18:19                                         ` Parav Pandit
2016-10-05  6:37                                           ` Christoph Hellwig
2016-10-05 11:22                                             ` Leon Romanovsky
2016-10-05 15:36                                               ` Tejun Heo
2016-10-06 12:55                                             ` Parav Pandit
2016-10-18 20:15                                           ` Parav Pandit
2016-09-19 13:10                                 ` Dalessandro, Dennis
2016-09-19 17:00                                   ` Parav Pandit
2016-09-10 16:12             ` Christoph Hellwig
2016-09-11  7:40               ` Matan Barak
2016-08-31  8:37 ` [PATCHv12 2/3] IB/core: added support to use " Parav Pandit
2016-08-31  8:37 ` [PATCHv12 3/3] rdmacg: Added documentation for rdmacg Parav Pandit
2016-08-31 13:56 ` [PATCHv12 0/3] rdmacg: IB/core: rdma controller support Tejun Heo
2016-10-05 11:22 ` Leon Romanovsky
2016-10-06 12:59   ` Parav Pandit

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