From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965594AbbJ0UyK (ORCPT ); Tue, 27 Oct 2015 16:54:10 -0400 Received: from mail-wi0-f178.google.com ([209.85.212.178]:34365 "EHLO mail-wi0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965359AbbJ0UyH (ORCPT ); Tue, 27 Oct 2015 16:54:07 -0400 Subject: Re: [PATCH] clocksource/drivers/tegra: allow timer irq affinity change To: Lucas Stach , Thomas Gleixner References: <1445787630-13251-1-git-send-email-dev@lynxeye.de> <562F4EA3.7000202@linaro.org> <1445977362.2535.1.camel@lynxeye.de> Cc: Stephen Warren , Thierry Reding , Alexandre Courbot , linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org From: Daniel Lezcano Message-ID: <562FE46C.8080904@linaro.org> Date: Tue, 27 Oct 2015 21:54:04 +0100 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <1445977362.2535.1.camel@lynxeye.de> 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 10/27/2015 09:22 PM, Lucas Stach wrote: > Am Dienstag, den 27.10.2015, 11:14 +0100 schrieb Daniel Lezcano: >> On 10/25/2015 04:40 PM, Lucas Stach wrote: >>> Allow the timer core to change the smp affinity of the broadcast >>> timer >>> irq by setting CLOCK_EVT_FEAT_DYNIRQ flag. >>> >>> This reduces interrupt pressure and wakeups on CPU0 as well as >>> vastly >>> reducing the number of timer broadcast IPIs. >> >> Did you test this patch on a tegra2 ? >> > Yes, I haven't spotted anything bad, but don't know if I should look > out for specific oddities? I was wondering if you tested it because the changelog was the same than the similar change you did previously so I wanted to know if you assumed the behavior or if you tested it. So, no problem. Thanks ! -- Daniel -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog