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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 C1171C388F9 for ; Tue, 27 Oct 2020 17:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F89220809 for ; Tue, 27 Oct 2020 17:07:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603818436; bh=NMSAQXbqWvRJVC+cSkxvdVdlg0p4Ii6H3ElLoKNThXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=grxtQ5DGO33SfpuTLD7+F8HFqfcyhhN1HaPei81zNB4VXeqFKPCSl7gWO90ZxJTvn c3MfFoGYYYecIZgjVONOSnOI+yoTzqFwwQ4tyJL1LIw6e2H6wLd9Hgq2R1+qaWd7O+ 7qDDYjOW8pt9H5pAyEy919pikwz3GsZzXzKx83mo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1816507AbgJ0RHO (ORCPT ); Tue, 27 Oct 2020 13:07:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:41394 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1793541AbgJ0PGx (ORCPT ); Tue, 27 Oct 2020 11:06:53 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 98F9A206E5; Tue, 27 Oct 2020 15:06:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603811213; bh=NMSAQXbqWvRJVC+cSkxvdVdlg0p4Ii6H3ElLoKNThXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RNO6dsHmVYneRW37OEr8p5/gSvjG1hjQy8r9pvx1tQSXUuaZXdMaEGpJGYFirc35N ZMnqlaq2qUzZIDIvj5+qU950oGnAQZ2OVEqDdEQZXL/7HITstaRDy/4Kqmca3FeX6v 3979HzzXnm7P1TZRpC6Lu+DrPrB3gYp7M58m5bzg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jin Yao , Arnaldo Carvalho de Melo , Alexander Shishkin , Andi Kleen , Jin Yao , Jiri Olsa , Kan Liang , Peter Zijlstra , Sasha Levin Subject: [PATCH 5.8 382/633] perf stat: Skip duration_time in setup_system_wide Date: Tue, 27 Oct 2020 14:52:05 +0100 Message-Id: <20201027135540.626511136@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135522.655719020@linuxfoundation.org> References: <20201027135522.655719020@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jin Yao [ Upstream commit 002a3d690f95804bdef6b70b26154103518e13d9 ] Some metrics (such as DRAM_BW_Use) consists of uncore events and duration_time. For uncore events, counter->core.system_wide is true. But for duration_time, counter->core.system_wide is false so target.system_wide is set to false. Then 'enable_on_exec' is set in perf_event_attr of uncore event. Kernel will return error when trying to open the uncore event. This patch skips the duration_time in setup_system_wide then target.system_wide will be set to true for the evlist of uncore events + duration_time. Before (tested on skylake desktop): # perf stat -M DRAM_BW_Use -- sleep 1 Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (arb/event=0x84,umask=0x1/). /bin/dmesg | grep -i perf may provide additional information. After: # perf stat -M DRAM_BW_Use -- sleep 1 Performance counter stats for 'system wide': 169 arb/event=0x84,umask=0x1/ # 0.00 DRAM_BW_Use 40,427 arb/event=0x81,umask=0x1/ 1,000,902,197 ns duration_time 1.000902197 seconds time elapsed Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring") Signed-off-by: Jin Yao Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jin Yao Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20200922015004.30114-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-stat.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 6e2502de755a8..6494383687f89 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1963,8 +1963,10 @@ static void setup_system_wide(int forks) struct evsel *counter; evlist__for_each_entry(evsel_list, counter) { - if (!counter->core.system_wide) + if (!counter->core.system_wide && + strcmp(counter->name, "duration_time")) { return; + } } if (evsel_list->core.nr_entries) -- 2.25.1