From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Gleixner <tglx@linutronix.de>
Subject: [patch V3 01/29] tracing: Cleanup stack trace code
Date: Thu, 25 Apr 2019 11:44:54 +0200
Message-ID: <20190425094801.230654524@linutronix.de>
References: <20190425094453.875139013@linutronix.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
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: LKML <linux-kernel@vger.kernel.org>
Cc: Mike Snitzer <snitzer@redhat.com>, David Airlie <airlied@linux.ie>, Catalin Marinas <catalin.marinas@arm.com>, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, dm-devel@redhat.com, Alexander Potapenko <glider@google.com>, Christoph Lameter <cl@linux.com>, Miroslav Benes <mbenes@suse.cz>, Christoph Hellwig <hch@lst.de>, Alasdair Kergon <agk@redhat.com>, Marek Szyprowski <m.szyprowski@samsung.com>, linux-arch@vger.kernel.org, x86@kernel.org, kasan-dev@googlegroups.com, Johannes Thumshirn <jthumshirn@suse.de>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexey Dobriyan <adobriyan@gmail.com>, intel-gfx@lists.freedesktop.org, David Rientjes <rientjes@google.com>, Akinobu Mita <akinobu.mita@gmail.com>, Steven Rostedt <rostedt@goodmis.org>, Josef Bacik <josef@toxicpanda.com>, Mike Rapoport <rppt@linux.vnet.ibm.com>, Andy Lutomirski <luto@kernel.org>, Josh Poimboeuf <jpoimboe>
List-Id: dri-devel@lists.freedesktop.org
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