From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755682AbbGCO6r (ORCPT ); Fri, 3 Jul 2015 10:58:47 -0400 Received: from mail-wg0-f47.google.com ([74.125.82.47]:33302 "EHLO mail-wg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755642AbbGCO6i (ORCPT ); Fri, 3 Jul 2015 10:58:38 -0400 Message-ID: <5596A324.4040800@linaro.org> Date: Fri, 03 Jul 2015 16:58:44 +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] clocksource: dw_apb_timer: add dynamic irq flag to the timer References: <1435933847-2069-1-git-send-email-jszhang@marvell.com> In-Reply-To: <1435933847-2069-1-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 07/03/2015 04:30 PM, Jisheng Zhang wrote: > Commit d2348fb6fdc6 ("tick: Dynamically set broadcast irq affinity") > adds one excelent 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. > > Signed-off-by: Jisheng Zhang > --- I am glad this flag helps. Were you able to do some measurements ? -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog