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=-11.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 5BA88C0650F for ; Tue, 30 Jul 2019 18:55:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1805420679 for ; Tue, 30 Jul 2019 18:55:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="BcZGa4s7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388498AbfG3Szr (ORCPT ); Tue, 30 Jul 2019 14:55:47 -0400 Received: from terminus.zytor.com ([198.137.202.136]:45741 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388373AbfG3Szr (ORCPT ); Tue, 30 Jul 2019 14:55:47 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x6UItYrl3336688 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 30 Jul 2019 11:55:34 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x6UItYrl3336688 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019071901; t=1564512934; bh=7HpGjktDh9LvhgF8NYuofjbDXp+Vk+Zs4G8uBvkk3MQ=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=BcZGa4s7KJSIJiNwkQR8sAMJeGIj0t6RF6eUy+hQ+X7+O6Ttjj2FNBOu2Omv1IDBB GTrpxdZucOEYkiUkBLQiiYpWDfylZ5WDXZG5Y16Hb0Ce5gTHueWdg+FYR/C3QlCumw HHlKN1GgD0HdawfLKt3fXzRWKMK2pAjPj0w8K8F0XDf3nu3YmgxPQK/KOAehw5OuRG osu5Nd9aTRG+3ENCBYtO9jVQt8yzaZq4IguQKjcco6Gmduy4ma0y2/cf7AEci9Yu2Y miMtQEa9mjiaR2w/3W9MqMuHTUQlwRAKDc6oB/WFDXTa9QdgcbXZNIo4mOQDwFKdqo ILLCDJdOCdDTw== Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x6UItXhp3336685; Tue, 30 Jul 2019 11:55:33 -0700 Date: Tue, 30 Jul 2019 11:55:33 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Jiri Olsa Message-ID: Cc: ak@linux.intel.com, acme@redhat.com, hpa@zytor.com, alexander.shishkin@linux.intel.com, linux-kernel@vger.kernel.org, mpetlan@redhat.com, jolsa@kernel.org, peterz@infradead.org, namhyung@kernel.org, tglx@linutronix.de, mingo@kernel.org, alexey.budankov@linux.intel.com Reply-To: ak@linux.intel.com, acme@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, mpetlan@redhat.com, namhyung@kernel.org, jolsa@kernel.org, peterz@infradead.org, alexey.budankov@linux.intel.com, mingo@kernel.org, tglx@linutronix.de In-Reply-To: <20190721112506.12306-65-jolsa@kernel.org> References: <20190721112506.12306-65-jolsa@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] libperf: Adopt perf_evsel__read() function from tools/perf Git-Commit-ID: 5c30af92f2b1e9d844e1ae3243e4adcd7753d4c1 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 5c30af92f2b1e9d844e1ae3243e4adcd7753d4c1 Gitweb: https://git.kernel.org/tip/5c30af92f2b1e9d844e1ae3243e4adcd7753d4c1 Author: Jiri Olsa AuthorDate: Sun, 21 Jul 2019 13:24:51 +0200 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 29 Jul 2019 18:34:46 -0300 libperf: Adopt perf_evsel__read() function from tools/perf Move the perf_evsel__read() function to libperf as a public interface together with struct perf_counts_values for returning counter values. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-65-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/lib/evsel.c | 42 ++++++++++++++++++++++++++++++ tools/perf/lib/include/internal/evsel.h | 1 + tools/perf/lib/include/perf/evsel.h | 14 ++++++++++ tools/perf/lib/libperf.map | 1 + tools/perf/tests/event-times.c | 2 +- tools/perf/util/counts.h | 12 +-------- tools/perf/util/evsel.c | 45 ++------------------------------- tools/perf/util/evsel.h | 3 --- 8 files changed, 62 insertions(+), 58 deletions(-) diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c index 50f09e939229..390fcf9107c1 100644 --- a/tools/perf/lib/evsel.c +++ b/tools/perf/lib/evsel.c @@ -12,6 +12,7 @@ #include #include #include +#include #include void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr) @@ -137,3 +138,44 @@ void perf_evsel__close(struct perf_evsel *evsel) perf_evsel__close_fd(evsel); perf_evsel__free_fd(evsel); } + +int perf_evsel__read_size(struct perf_evsel *evsel) +{ + u64 read_format = evsel->attr.read_format; + int entry = sizeof(u64); /* value */ + int size = 0; + int nr = 1; + + if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + size += sizeof(u64); + + if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + size += sizeof(u64); + + if (read_format & PERF_FORMAT_ID) + entry += sizeof(u64); + + if (read_format & PERF_FORMAT_GROUP) { + nr = evsel->nr_members; + size += sizeof(u64); + } + + size += entry * nr; + return size; +} + +int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count) +{ + size_t size = perf_evsel__read_size(evsel); + + memset(count, 0, sizeof(*count)); + + if (FD(evsel, cpu, thread) < 0) + return -EINVAL; + + if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) + return -errno; + + return 0; +} diff --git a/tools/perf/lib/include/internal/evsel.h b/tools/perf/lib/include/internal/evsel.h index 878e2cf41ffc..89bae3720d67 100644 --- a/tools/perf/lib/include/internal/evsel.h +++ b/tools/perf/lib/include/internal/evsel.h @@ -23,5 +23,6 @@ struct perf_evsel { int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads); void perf_evsel__close_fd(struct perf_evsel *evsel); void perf_evsel__free_fd(struct perf_evsel *evsel); +int perf_evsel__read_size(struct perf_evsel *evsel); #endif /* __LIBPERF_INTERNAL_EVSEL_H */ diff --git a/tools/perf/lib/include/perf/evsel.h b/tools/perf/lib/include/perf/evsel.h index aa5c48f822d2..16ae3f873280 100644 --- a/tools/perf/lib/include/perf/evsel.h +++ b/tools/perf/lib/include/perf/evsel.h @@ -2,6 +2,7 @@ #ifndef __LIBPERF_EVSEL_H #define __LIBPERF_EVSEL_H +#include #include struct perf_evsel; @@ -9,6 +10,17 @@ struct perf_event_attr; struct perf_cpu_map; struct perf_thread_map; +struct perf_counts_values { + union { + struct { + uint64_t val; + uint64_t ena; + uint64_t run; + }; + uint64_t values[3]; + }; +}; + LIBPERF_API void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr); LIBPERF_API struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr); @@ -16,5 +28,7 @@ LIBPERF_API void perf_evsel__delete(struct perf_evsel *evsel); LIBPERF_API int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *cpus, struct perf_thread_map *threads); LIBPERF_API void perf_evsel__close(struct perf_evsel *evsel); +LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count); #endif /* __LIBPERF_EVSEL_H */ diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map index 0b90999dcdcb..2e23cf420cce 100644 --- a/tools/perf/lib/libperf.map +++ b/tools/perf/lib/libperf.map @@ -16,6 +16,7 @@ LIBPERF_0.0.1 { perf_evsel__init; perf_evsel__open; perf_evsel__close; + perf_evsel__read; perf_evlist__new; perf_evlist__delete; perf_evlist__init; diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c index 00adba86403b..714e3611352c 100644 --- a/tools/perf/tests/event-times.c +++ b/tools/perf/tests/event-times.c @@ -196,7 +196,7 @@ static int test_times(int (attach)(struct evlist *), TEST_ASSERT_VAL("failed to detach", !detach(evlist)); - perf_evsel__read(evsel, 0, 0, &count); + perf_evsel__read(&evsel->core, 0, 0, &count); err = !(count.ena == count.run); diff --git a/tools/perf/util/counts.h b/tools/perf/util/counts.h index bbfac9ecf642..13430f353c19 100644 --- a/tools/perf/util/counts.h +++ b/tools/perf/util/counts.h @@ -3,17 +3,7 @@ #define __PERF_COUNTS_H #include - -struct perf_counts_values { - union { - struct { - u64 val; - u64 ena; - u64 run; - }; - u64 values[3]; - }; -}; +#include struct perf_counts { s8 scaled; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8d8ed36377f5..0957ec24f518 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1346,53 +1346,12 @@ void perf_counts_values__scale(struct perf_counts_values *count, *pscaled = scaled; } -static int perf_evsel__read_size(struct evsel *evsel) -{ - u64 read_format = evsel->core.attr.read_format; - int entry = sizeof(u64); /* value */ - int size = 0; - int nr = 1; - - if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) - size += sizeof(u64); - - if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) - size += sizeof(u64); - - if (read_format & PERF_FORMAT_ID) - entry += sizeof(u64); - - if (read_format & PERF_FORMAT_GROUP) { - nr = evsel->core.nr_members; - size += sizeof(u64); - } - - size += entry * nr; - return size; -} - -int perf_evsel__read(struct evsel *evsel, int cpu, int thread, - struct perf_counts_values *count) -{ - size_t size = perf_evsel__read_size(evsel); - - memset(count, 0, sizeof(*count)); - - if (FD(evsel, cpu, thread) < 0) - return -EINVAL; - - if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) - return -errno; - - return 0; -} - static int perf_evsel__read_one(struct evsel *evsel, int cpu, int thread) { struct perf_counts_values *count = perf_counts(evsel->counts, cpu, thread); - return perf_evsel__read(evsel, cpu, thread, count); + return perf_evsel__read(&evsel->core, cpu, thread, count); } static void @@ -1453,7 +1412,7 @@ perf_evsel__read_group(struct evsel *leader, int cpu, int thread) { struct perf_stat_evsel *ps = leader->stats; u64 read_format = leader->core.attr.read_format; - int size = perf_evsel__read_size(leader); + int size = perf_evsel__read_size(&leader->core); u64 *data = ps->group_data; if (!(read_format & PERF_FORMAT_ID)) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 03fc8edad492..57e315d8158e 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -336,9 +336,6 @@ static inline bool perf_evsel__match2(struct evsel *e1, (a)->core.attr.type == (b)->core.attr.type && \ (a)->core.attr.config == (b)->core.attr.config) -int perf_evsel__read(struct evsel *evsel, int cpu, int thread, - struct perf_counts_values *count); - int perf_evsel__read_counter(struct evsel *evsel, int cpu, int thread); int __perf_evsel__read_on_cpu(struct evsel *evsel,