From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=3.0 tests=MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1ECF8C43441 for ; Tue, 20 Nov 2018 02:29:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E21BB208E3 for ; Tue, 20 Nov 2018 02:29:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E21BB208E3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732738AbeKTM4a (ORCPT ); Tue, 20 Nov 2018 07:56:30 -0500 Received: from lgeamrelo12.lge.com ([156.147.23.52]:48574 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726629AbeKTM4a (ORCPT ); Tue, 20 Nov 2018 07:56:30 -0500 Received: from unknown (HELO lgeamrelo02.lge.com) (156.147.1.126) by 156.147.23.52 with ESMTP; 20 Nov 2018 11:29:43 +0900 X-Original-SENDERIP: 156.147.1.126 X-Original-MAILFROM: namhyung@kernel.org Received: from unknown (HELO sejong) (10.177.227.17) by 156.147.1.126 with ESMTP; 20 Nov 2018 11:29:43 +0900 X-Original-SENDERIP: 10.177.227.17 X-Original-MAILFROM: namhyung@kernel.org Date: Tue, 20 Nov 2018 11:29:43 +0900 From: Namhyung Kim To: Jiri Olsa Cc: Arnaldo Carvalho de Melo , lkml , Ingo Molnar , Alexander Shishkin , Peter Zijlstra , David Miller , kernel-team@lge.com Subject: Re: [PATCH 00/12] perf top: Rework processing code Message-ID: <20181120022943.GF20153@sejong> References: <20181119122016.22423-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20181119122016.22423-1-jolsa@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Jirka, On Mon, Nov 19, 2018 at 01:20:04PM +0100, Jiri Olsa wrote: > hi, > David reported issues with perf top loosing side band events > so we moved mmap reading and hists processing into separated > threads. > > This patchset also adds dropping sample logic when the processing > falls behind the reader thread. This way we get incomplete but > current data in perf top. > > Also available in: > git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git > perf/fixes Beside the simple comment in 05/12 (and the related fix), it looks good to me. And I think we can do similar for hists->lock as well. Acked-by: Namhyung Kim Thanks, Namhyung