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=-21.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 DD773C07E99 for ; Mon, 12 Jul 2021 07:13:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C2C9461151 for ; Mon, 12 Jul 2021 07:13:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241830AbhGLHQq (ORCPT ); Mon, 12 Jul 2021 03:16:46 -0400 Received: from mga03.intel.com ([134.134.136.65]:25894 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240156AbhGLGus (ORCPT ); Mon, 12 Jul 2021 02:50:48 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10042"; a="209973443" X-IronPort-AV: E=Sophos;i="5.84,232,1620716400"; d="scan'208";a="209973443" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jul 2021 23:47:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,232,1620716400"; d="scan'208";a="491916419" Received: from nntpat99-84.inn.intel.com ([10.125.99.84]) by FMSMGA003.fm.intel.com with ESMTP; 11 Jul 2021 23:47:50 -0700 From: Alexey Bayduraev To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , linux-kernel , Andi Kleen , Adrian Hunter , Alexander Antonov , Alexei Budankov , Riccardo Mancini Subject: [PATCH v10 24/24] perf session: Load data directory files for analysis Date: Mon, 12 Jul 2021 09:46:24 +0300 Message-Id: <7038392fb4eeb0fe0c59bc6769d72fb7c831373f.1626072009.git.alexey.v.bayduraev@linux.intel.com> X-Mailer: git-send-email 2.19.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Load data directory files and provide basic raw dump and aggregated analysis support of data directories in report mode, still with no memory consumption optimizations. Design and implementation are based on the prototype [1], [2]. [1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b perf/record_threads [2] https://lore.kernel.org/lkml/20180913125450.21342-1-jolsa@kernel.org/ Suggested-by: Jiri Olsa Acked-by: Namhyung Kim Signed-off-by: Alexey Bayduraev --- tools/perf/util/session.c | 131 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 63811fec2583..021f543c22a4 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -48,6 +48,13 @@ #define NUM_MMAPS 128 #endif +/* + * Processing 10MBs of data from each reader in sequence, + * because that's the way the ordered events sorting works + * most efficiently. + */ +#define READER_MAX_SIZE (10 * 1024 * 1024) + struct reader; typedef s64 (*reader_cb_t)(struct perf_session *session, @@ -65,6 +72,7 @@ struct reader_state { u64 data_size; u64 head; bool eof; + u64 size; }; enum { @@ -2326,6 +2334,7 @@ reader__read_event(struct reader *rd, struct perf_session *session, if (skip) size += skip; + st->size += size; st->head += size; st->file_pos += size; @@ -2425,6 +2434,125 @@ static int __perf_session__process_events(struct perf_session *session) return err; } +/* + * This function reads, merge and process directory data. + * It assumens the version 1 of directory data, where each + * data file holds per-cpu data, already sorted by kernel. + */ +static int __perf_session__process_dir_events(struct perf_session *session) +{ + struct perf_data *data = session->data; + struct perf_tool *tool = session->tool; + int i, ret = 0, readers = 1; + struct ui_progress prog; + u64 total_size = perf_data__size(session->data); + struct reader *rd; + + perf_tool__fill_defaults(tool); + + ui_progress__init_size(&prog, total_size, "Sorting events..."); + + for (i = 0; i < data->dir.nr; i++) { + if (data->dir.files[i].size) + readers++; + } + + rd = session->readers = zalloc(readers * sizeof(struct reader)); + if (!rd) + return -ENOMEM; + session->nr_readers = readers; + readers = 0; + + rd[readers] = (struct reader) { + .fd = perf_data__fd(session->data), + .path = session->data->file.path, + .data_size = session->header.data_size, + .data_offset = session->header.data_offset, + .in_place_update = session->data->in_place_update, + }; + ret = reader__init(&rd[readers], NULL); + if (ret) + goto out_err; + ret = reader__mmap(&rd[readers], session); + if (ret != READER_OK) { + if (ret == READER_EOF) + ret = -EINVAL; + goto out_err; + } + readers++; + + for (i = 0; i < data->dir.nr; i++) { + if (!data->dir.files[i].size) + continue; + rd[readers] = (struct reader) { + .fd = data->dir.files[i].fd, + .path = data->dir.files[i].path, + .data_size = data->dir.files[i].size, + .data_offset = 0, + .in_place_update = session->data->in_place_update, + }; + ret = reader__init(&rd[readers], NULL); + if (ret) + goto out_err; + ret = reader__mmap(&rd[readers], session); + if (ret != READER_OK) { + if (ret == READER_EOF) + ret = -EINVAL; + goto out_err; + } + readers++; + } + + i = 0; + + while ((ret >= 0) && readers) { + if (session_done()) + return 0; + + if (rd[i].state.eof) { + i = (i + 1) % session->nr_readers; + continue; + } + + ret = reader__read_event(&rd[i], session, &prog); + if (ret < 0) + break; + if (ret == READER_NODATA) { + ret = reader__mmap(&rd[i], session); + if (ret < 0) + goto out_err; + if (ret == READER_EOF) + readers--; + } + + if (rd[i].state.size >= READER_MAX_SIZE) { + rd[i].state.size = 0; + i = (i + 1) % session->nr_readers; + } + } + + ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL); + if (ret) + goto out_err; + + ret = perf_session__flush_thread_stacks(session); +out_err: + ui_progress__finish(); + + if (!tool->no_warn) + perf_session__warn_about_errors(session); + + /* + * We may switching perf.data output, make ordered_events + * reusable. + */ + ordered_events__reinit(&session->ordered_events); + + session->one_mmap = false; + + return ret; +} + int perf_session__process_events(struct perf_session *session) { if (perf_session__register_idle_thread(session) < 0) @@ -2433,6 +2561,9 @@ int perf_session__process_events(struct perf_session *session) if (perf_data__is_pipe(session->data)) return __perf_session__process_pipe_events(session); + if (perf_data__is_dir(session->data)) + return __perf_session__process_dir_events(session); + return __perf_session__process_events(session); } -- 2.19.0