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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 12704C433FF for ; Tue, 13 Aug 2019 00:40:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D6EFD206A2 for ; Tue, 13 Aug 2019 00:40:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726712AbfHMAku (ORCPT ); Mon, 12 Aug 2019 20:40:50 -0400 Received: from mga14.intel.com ([192.55.52.115]:25093 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726453AbfHMAku (ORCPT ); Mon, 12 Aug 2019 20:40:50 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Aug 2019 17:40:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,379,1559545200"; d="scan'208";a="259963261" Received: from unknown (HELO [10.239.196.24]) ([10.239.196.24]) by orsmga001.jf.intel.com with ESMTP; 12 Aug 2019 17:40:47 -0700 Subject: Re: [PATCH v3] perf diff: Report noisy for cycles diff To: Jiri Olsa Cc: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com, alexander.shishkin@linux.intel.com, Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com References: <20190809233029.12265-1-yao.jin@linux.intel.com> <20190812083543.GA11752@krava> From: "Jin, Yao" Message-ID: <959b3b52-269c-8f23-9ac7-a881334ca904@linux.intel.com> Date: Tue, 13 Aug 2019 08:40:47 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190812083543.GA11752@krava> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/12/2019 4:35 PM, Jiri Olsa wrote: > On Sat, Aug 10, 2019 at 07:30:29AM +0800, Jin Yao wrote: > > SNIP > >> static int process_block_per_sym(struct hist_entry *he) >> @@ -684,6 +694,21 @@ static struct hist_entry *get_block_pair(struct hist_entry *he, >> return NULL; >> } >> >> +static void init_spark_values(unsigned long *svals, int num) >> +{ >> + for (int i = 0; i < num; i++) >> + svals[i] = 0; >> +} >> + >> +static void update_spark_value(unsigned long *svals, int num, >> + struct stats *stats, u64 val) >> +{ >> + int n = stats->n; >> + >> + if (n < num) >> + svals[n] = val; >> +} >> + >> static void compute_cycles_diff(struct hist_entry *he, >> struct hist_entry *pair) >> { >> @@ -692,6 +717,23 @@ static void compute_cycles_diff(struct hist_entry *he, >> pair->diff.cycles = >> pair->block_info->cycles_aggr / pair->block_info->num_aggr - >> he->block_info->cycles_aggr / he->block_info->num_aggr; >> + > > should below code be executed only for show_noisy? > > jirka > Oh, yes, following code should be executed only when show_noisy is enabled. Thanks for pointing out this issue. I will refine the code. Thanks Jin Yao >> + init_stats(&pair->diff.stats); >> + init_spark_values(pair->diff.svals, NUM_SPARKS); >> + >> + for (int i = 0; i < pair->block_info->num; i++) { >> + u64 val; >> + >> + if (i >= he->block_info->num || i >= NUM_SPARKS) >> + break; >> + >> + val = labs(pair->block_info->cycles_spark[i] - >> + he->block_info->cycles_spark[i]); >> + >> + update_spark_value(pair->diff.svals, NUM_SPARKS, >> + &pair->diff.stats, val); >> + update_stats(&pair->diff.stats, val); >> + } >> } >> } > > SNIP >