From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752607AbeBXA4l (ORCPT ); Fri, 23 Feb 2018 19:56:41 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:54922 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751425AbeBXA4k (ORCPT ); Fri, 23 Feb 2018 19:56:40 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 5ABFB6030F Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=skannan@codeaurora.org Message-ID: <5A90B845.3030504@codeaurora.org> Date: Fri, 23 Feb 2018 16:56:37 -0800 From: Saravana Kannan User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: Saravana Kannan CC: mark.rutland@arm.com, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , avilaj@codeaurora.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 2/2] perf/core: Add support for PMUs that can be read from any CPU References: <1519431578-11995-1-git-send-email-skannan@codeaurora.org> <1519431578-11995-2-git-send-email-skannan@codeaurora.org> In-Reply-To: <1519431578-11995-2-git-send-email-skannan@codeaurora.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/23/2018 04:19 PM, Saravana Kannan wrote: > Some PMUs events can be read from any CPU. So allow the PMU to mark > events as such. For these events, we don't need to reject reads or > make smp calls to the event's CPU and cause unnecessary wake ups. > > Good examples of such events would be events from caches shared across > all CPUs. > > Signed-off-by: Saravana Kannan > --- > include/linux/perf_event.h | 3 +++ > kernel/events/core.c | 10 ++++++++-- > 2 files changed, 11 insertions(+), 2 deletions(-) > > Ugh! Didn't mean to chain these two emails. This one is independent of the other email. -Saravana -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project