From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752339AbaANQji (ORCPT ); Tue, 14 Jan 2014 11:39:38 -0500 Received: from terminus.zytor.com ([198.137.202.10]:52682 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752256AbaANQjZ (ORCPT ); Tue, 14 Jan 2014 11:39:25 -0500 Date: Tue, 14 Jan 2014 08:38:39 -0800 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: linux-kernel@vger.kernel.org, eranian@google.com, paulus@samba.org, acme@redhat.com, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, efault@gmx.de, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, adrian.hunter@intel.com, dsahern@gmail.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, acme@redhat.com, paulus@samba.org, eranian@google.com, linux-kernel@vger.kernel.org, efault@gmx.de, peterz@infradead.org, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, dsahern@gmail.com, adrian.hunter@intel.com, tglx@linutronix.de To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf header: Pack 'struct perf_session_env' Git-Commit-ID: 3ba4d2e1a8235d862657ded9f20b3170b477768b 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 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.1 (terminus.zytor.com [127.0.0.1]); Tue, 14 Jan 2014 08:38:46 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 3ba4d2e1a8235d862657ded9f20b3170b477768b Gitweb: http://git.kernel.org/tip/3ba4d2e1a8235d862657ded9f20b3170b477768b Author: Arnaldo Carvalho de Melo AuthorDate: Mon, 6 Jan 2014 15:28:35 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 13 Jan 2014 10:06:23 -0300 perf header: Pack 'struct perf_session_env' Initial struct: [acme@ssdandy linux]$ pahole -C perf_session_env ~/bin/perf struct perf_session_env { char * hostname; /* 0 8 */ char * os_release; /* 8 8 */ char * version; /* 16 8 */ char * arch; /* 24 8 */ int nr_cpus_online; /* 32 4 */ int nr_cpus_avail; /* 36 4 */ char * cpu_desc; /* 40 8 */ char * cpuid; /* 48 8 */ long long unsigned int total_mem; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ int nr_cmdline; /* 64 4 */ /* XXX 4 bytes hole, try to pack */ char * cmdline; /* 72 8 */ int nr_sibling_cores; /* 80 4 */ /* XXX 4 bytes hole, try to pack */ char * sibling_cores; /* 88 8 */ int nr_sibling_threads; /* 96 4 */ /* XXX 4 bytes hole, try to pack */ char * sibling_threads; /* 104 8 */ int nr_numa_nodes; /* 112 4 */ /* XXX 4 bytes hole, try to pack */ char * numa_nodes; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ int nr_pmu_mappings; /* 128 4 */ /* XXX 4 bytes hole, try to pack */ char * pmu_mappings; /* 136 8 */ int nr_groups; /* 144 4 */ /* size: 152, cachelines: 3, members: 20 */ /* sum members: 128, holes: 5, sum holes: 20 */ /* padding: 4 */ /* last cacheline: 24 bytes */ }; [acme@ssdandy linux]$ [acme@ssdandy linux]$ pahole -C perf_session_env --reorganize --show_reorg_steps ~/bin/perf | grep ^/ | grep -v Final /* Moving 'nr_sibling_cores' from after 'cmdline' to after 'nr_cmdline' */ /* Moving 'nr_numa_nodes' from after 'sibling_threads' to after 'nr_sibling_threads' */ /* Moving 'nr_groups' from after 'pmu_mappings' to after 'nr_pmu_mappings' */ [acme@ssdandy linux]$ Final struct stats: [acme@ssdandy linux]$ pahole -C perf_session_env --reorganize --show_reorg_steps ~/bin/perf | tail -4 /* --- cacheline 2 boundary (128 bytes) --- */ /* size: 128, cachelines: 2, members: 20 */ }; /* saved 24 bytes and 1 cacheline! */ [acme@ssdandy linux]$ Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-3d9tshamloinzxcqeb7mtd1n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index 307c9ae..a2d047b 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -77,16 +77,16 @@ struct perf_session_env { unsigned long long total_mem; int nr_cmdline; - char *cmdline; int nr_sibling_cores; - char *sibling_cores; int nr_sibling_threads; - char *sibling_threads; int nr_numa_nodes; - char *numa_nodes; int nr_pmu_mappings; - char *pmu_mappings; int nr_groups; + char *cmdline; + char *sibling_cores; + char *sibling_threads; + char *numa_nodes; + char *pmu_mappings; }; struct perf_header {