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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7DE85ECAAD4 for ; Wed, 31 Aug 2022 21:04:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229638AbiHaVD7 (ORCPT ); Wed, 31 Aug 2022 17:03:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229619AbiHaVD6 (ORCPT ); Wed, 31 Aug 2022 17:03:58 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD415EC4FC; Wed, 31 Aug 2022 14:03:57 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id i7-20020a17090adc0700b001fd7ccbec3cso4405196pjv.0; Wed, 31 Aug 2022 14:03:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:from:to:cc:subject:date; bh=+k9PKYV37HdBoa0ru3ipdSwSlY99M5IwVy3/cgyTvZE=; b=Vk30L9r82bSVM85CW3EBAWzoe0Dn+qPjJzw/Re99EZjRc/fpfaAUwIkADseQFFNHKB rMuU9ux9XXtxXPAdoGqe7Oak82NOJClJyn2C17DFwrI/Ag4RmNHmp7oJoRVNAqp5tQSR KhH4QeFdALJh+XFjZ9L9Aeqi98z+at4ad2JfZn1r35pW2Q9Kt6vBLKB9sMLztm712fEk 8mlfEp2e2riA6lEgqhiyIXCeZWlAMGGtAODiAKPA4EMX/4DfJMLHkgEGXQOx8/V3wsOV ZLgQp/FEeUnvtnhbYHMxw/rHfNK93zoNqxjX9sRp3htWLdyW+WzLMKypzspuu+BpO8dM tcUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:x-gm-message-state:from:to:cc:subject:date; bh=+k9PKYV37HdBoa0ru3ipdSwSlY99M5IwVy3/cgyTvZE=; b=S5HKQGMGkvlxTiXBDpWa2Oep1tlIvvmf9LUs+JO6maUGhLdAw1jzHDkbs+FEEDR1F7 dhBtFUbEwgXa1y5vKts/HS8KZYucl6pFd96cCZJmUreJxkTRPodFPezeW+cjDgqaxh2E qYjxCQQHyfF586rlyBi43qcRm0s/KFU8hqz4Q+c3oB5pjAS+G1rj7RZUMNEwaLqCbcpf Mo+YUwgpyytxupsUoBXb/lgj/ji9iij5Kl4WfF+21hBw8k75E6WU6ZTBDZ6FnUjsC+BF +513u5UtyRq31vE3DH6a8imjhNsejqGfAh0BYeKX0rGOJd/b7ZFoWauhXtsgPqmN3cZ3 Ah4Q== X-Gm-Message-State: ACgBeo3NNp8kSpyU4Kw7tzQyXZsuKoo9CXZ5claljWhfY+aNLzkIPFGI Py1gdArVgz/FBPbLg+Relc4= X-Google-Smtp-Source: AA6agR7gLHIavinDS7rbV1jmFJ16cc7JyDggKel336cAqm8DxZ18I1/nfOLgQGCjKG+NA31qrSP5fQ== X-Received: by 2002:a17:902:e945:b0:16a:1c41:f66 with SMTP id b5-20020a170902e94500b0016a1c410f66mr26908520pll.129.1661979837198; Wed, 31 Aug 2022 14:03:57 -0700 (PDT) Received: from youngsil.svl.corp.google.com ([2620:15c:2d4:203:4a6a:d1f4:9cf7:d0fb]) by smtp.gmail.com with ESMTPSA id e27-20020a056a0000db00b0053ae6a3c51asm528931pfj.186.2022.08.31.14.03.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Aug 2022 14:03:55 -0700 (PDT) Sender: Namhyung Kim From: Namhyung Kim To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Ingo Molnar , Peter Zijlstra , LKML , Ian Rogers , linux-perf-users@vger.kernel.org, Adrian Hunter Subject: [PATCHSET 0/5] perf tools: Show per-event lost sample count (v1) Date: Wed, 31 Aug 2022 14:03:47 -0700 Message-Id: <20220831210352.145753-1-namhyung@kernel.org> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Hello, Now we have PERF_FORMAT_LOST support, add it to perf record and report so that it can show number of lost samples per event. This can be useful if you want to reconstruct number of events from the samples like when using -c option. Currently it adds PERF_RECORD_LOST_SAMPLES at the end of perf data after reading event values by read(2). The perf record unconditionally sets the lost bit if the kernel supports it. Users can see the number with `perf report --stat`. You can get the code from 'perf/report-lost-v1' brach on git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git Thanks, Namhyung Namhyung Kim (5): perf tools: Print LOST read format in the verbose mode perf record: Set PERF_FORMAT_LOST by default perf record: Read and inject LOST_SAMPLES events perf hist: Add nr_lost_samples to hist_stats perf report: Show per-event LOST SAMPLES stat tools/perf/builtin-record.c | 60 +++++++++++++++++++++++ tools/perf/builtin-report.c | 17 +++++++ tools/perf/util/events_stats.h | 1 + tools/perf/util/evsel.c | 10 +++- tools/perf/util/evsel.h | 1 + tools/perf/util/hist.c | 8 +++ tools/perf/util/hist.h | 1 + tools/perf/util/perf_event_attr_fprintf.c | 2 +- 8 files changed, 98 insertions(+), 2 deletions(-) base-commit: 2f4c2fbd2ff5e3176b0121443f995808ee498bd0 -- 2.37.2.789.g6183377224-goog