From mboxrd@z Thu Jan 1 00:00:00 1970
From: daniel.lezcano@linaro.org (Daniel Lezcano)
Date: Mon, 06 Jul 2015 10:46:09 +0200
Subject: [PATCH v2] clocksource: dw_apb_timer: add dynamic irq flag to
the timer
In-Reply-To: <1435986403-3797-1-git-send-email-jszhang@marvell.com>
References: <1435986403-3797-1-git-send-email-jszhang@marvell.com>
Message-ID: <559A4051.8000101@linaro.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org
On 07/04/2015 07:06 AM, Jisheng Zhang wrote:
> Commit d2348fb6fdc6 ("tick: Dynamically set broadcast irq affinity")
> adds one execllent feature CLOCK_EVT_FEAT_DYNIRQ to let the core set the
> interrupt affinity of the broadcast interrupt to the cpu which has the
> earliest expiry time. This patch adds CLOCK_EVT_FEAT_DYNIRQ flag to
> avoid unnecessary wakeups and IPIs when the dw_apb_timer is used as
> broadcast timer.
Thanks for the measurements. I picked the patch but did not applied it
yet since I will have to handle a trivial conflict with the recent changes.
-- Daniel
--
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook |
Twitter |
Blog
From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path:
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
id S1753556AbbGFIqF (ORCPT );
Mon, 6 Jul 2015 04:46:05 -0400
Received: from mail-wg0-f51.google.com ([74.125.82.51]:34721 "EHLO
mail-wg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S1751427AbbGFIqD (ORCPT
);
Mon, 6 Jul 2015 04:46:03 -0400
Message-ID: <559A4051.8000101@linaro.org>
Date: Mon, 06 Jul 2015 10:46:09 +0200
From: Daniel Lezcano
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.6.0
MIME-Version: 1.0
To: Jisheng Zhang , tglx@linutronix.de
CC: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] clocksource: dw_apb_timer: add dynamic irq flag to
the timer
References: <1435986403-3797-1-git-send-email-jszhang@marvell.com>
In-Reply-To: <1435986403-3797-1-git-send-email-jszhang@marvell.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID:
X-Mailing-List: linux-kernel@vger.kernel.org
On 07/04/2015 07:06 AM, Jisheng Zhang wrote:
> Commit d2348fb6fdc6 ("tick: Dynamically set broadcast irq affinity")
> adds one execllent feature CLOCK_EVT_FEAT_DYNIRQ to let the core set the
> interrupt affinity of the broadcast interrupt to the cpu which has the
> earliest expiry time. This patch adds CLOCK_EVT_FEAT_DYNIRQ flag to
> avoid unnecessary wakeups and IPIs when the dw_apb_timer is used as
> broadcast timer.
Thanks for the measurements. I picked the patch but did not applied it
yet since I will have to handle a trivial conflict with the recent changes.
-- Daniel
--
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook |
Twitter |
Blog