From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934143AbeCGP55 (ORCPT ); Wed, 7 Mar 2018 10:57:57 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:60200 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933897AbeCGPu2 (ORCPT ); Wed, 7 Mar 2018 10:50:28 -0500 From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Ingo Molnar , Namhyung Kim , David Ahern , Alexander Shishkin , Peter Zijlstra Subject: [PATCH 02/19] perf report: Display perf.data header info Date: Wed, 7 Mar 2018 16:50:03 +0100 Message-Id: <20180307155020.32613-3-jolsa@kernel.org> In-Reply-To: <20180307155020.32613-1-jolsa@kernel.org> References: <20180307155020.32613-1-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Display more header info from perf.data file, following values: $ perf report -i perf.data --header-only ... # header version : 1 # data offset : 424 # data size : 3364280 # feat offset : 3364704 It's handy for debuging. Link: http://lkml.kernel.org/n/tip-bdfzdy1xv8ocs6ukk31sgxsw@git.kernel.org Signed-off-by: Jiri Olsa --- tools/perf/util/header.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index a326e0d8b5b6..e0c3cad0fd8d 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2318,7 +2318,12 @@ int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full) if (ret == -1) return -1; - fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); + fprintf(fp, "# captured on : %s", ctime(&st.st_ctime)); + + fprintf(fp, "# header version : %u\n", header->version); + fprintf(fp, "# data offset : %" PRIu64 "\n", header->data_offset); + fprintf(fp, "# data size : %" PRIu64 "\n", header->data_size); + fprintf(fp, "# feat offset : %" PRIu64 "\n", header->feat_offset); perf_header__process_sections(header, fd, &hd, perf_file_section__fprintf_info); -- 2.13.6