From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754514AbeEaKdz (ORCPT ); Thu, 31 May 2018 06:33:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:57128 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754584AbeEaKcv (ORCPT ); Thu, 31 May 2018 06:32:51 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Thomas Richter , Heiko Carstens , Hendrik Brueckner , Martin Schwidefsky , Arnaldo Carvalho de Melo Subject: [PATCH 5/7] perf data: Update documentation section on cpu topology Date: Thu, 31 May 2018 07:32:18 -0300 Message-Id: <20180531103220.24684-6-acme@kernel.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180531103220.24684-1-acme@kernel.org> References: <20180531103220.24684-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Richter Add an explanation of each cpu's core and socket identifier to the perf.data file format documentation. Signed-off-by: Thomas Richter Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Link: http://lkml.kernel.org/r/20180528074433.16652-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf.data-file-format.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt index d00f0d51cab8..c57904a526ce 100644 --- a/tools/perf/Documentation/perf.data-file-format.txt +++ b/tools/perf/Documentation/perf.data-file-format.txt @@ -153,10 +153,18 @@ struct { HEADER_CPU_TOPOLOGY = 13, String lists defining the core and CPU threads topology. +The string lists are followed by a variable length array +which contains core_id and socket_id of each cpu. +The number of entries can be determined by the size of the +section minus the sizes of both string lists. struct { struct perf_header_string_list cores; /* Variable length */ struct perf_header_string_list threads; /* Variable length */ + struct { + uint32_t core_id; + uint32_t socket_id; + } cpus[nr]; /* Variable length records */ }; Example: -- 2.14.3