From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Subject: Re: [CI 06/20] drm/i915: Slaughter the thundering
 i915_wait_request herd
Date: Mon, 23 May 2016 09:53:40 +0100
Message-ID: <5742C514.2010403@linux.intel.com>
References: <1463657576-32063-1-git-send-email-chris@chris-wilson.co.uk>
 <1463657576-32063-6-git-send-email-chris@chris-wilson.co.uk>
 <573EFD3D.2040103@linux.intel.com>
 <20160520121951.GS3590@nuc-i3427.alporthouse.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga11.intel.com (mga11.intel.com [192.55.52.93])
 by gabe.freedesktop.org (Postfix) with ESMTP id EED156E449
 for <intel-gfx@lists.freedesktop.org>; Mon, 23 May 2016 08:53:41 +0000 (UTC)
In-Reply-To: <20160520121951.GS3590@nuc-i3427.alporthouse.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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