From mboxrd@z Thu Jan  1 00:00:00 1970
From: Robert Bragg <robert@sixbynine.org>
Subject: [RFC PATCH 11/11] WIP: drm/i915: constrain unit gating
	while using OA
Date: Thu,  7 May 2015 15:15:54 +0100
Message-ID: <1431008154-6833-12-git-send-email-robert@sixbynine.org>
References: <1431008154-6833-1-git-send-email-robert@sixbynine.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
In-Reply-To: <1431008154-6833-1-git-send-email-robert@sixbynine.org>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://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: <http://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: intel-gfx@lists.freedesktop.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, David Airlie <airlied@linux.ie>, linux-api@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>, Arnaldo Carvalho de Melo <acme@kernel.org>, Daniel Vetter <daniel.vetter@intel.com>
List-Id: linux-api@vger.kernel.org
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