Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753877Ab3JYKfd (ORCPT ); Fri, 25 Oct 2013 06:35:33 -0400 Received: from terminus.zytor.com ([198.137.202.10]:52394 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753196Ab3JYKcg (ORCPT ); Fri, 25 Oct 2013 06:32:36 -0400 Date: Fri, 25 Oct 2013 03:32:13 -0700 From: tip-bot for Adrian Hunter Message-ID: Cc: acme@redhat.com, linux-kernel@vger.kernel.org, eranian@google.com, paulus@samba.org, mingo@redhat.com, hpa@zytor.com, mingo@kernel.org, a.p.zijlstra@chello.nl, efault@gmx.de, namhyung@gmail.com, jolsa@redhat.com, fweisbec@gmail.com, adrian.hunter@intel.com, dsahern@gmail.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, mingo@redhat.com, paulus@samba.org, eranian@google.com, linux-kernel@vger.kernel.org, acme@redhat.com, a.p.zijlstra@chello.nl, efault@gmx.de, namhyung@gmail.com, jolsa@redhat.com, fweisbec@gmail.com, dsahern@gmail.com, adrian.hunter@intel.com, tglx@linutronix.de In-Reply-To: <1382427258-17495-13-git-send-email-adrian.hunter@intel.com> References: <1382427258-17495-13-git-send-email-adrian.hunter@intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf sched: Optimize build time Git-Commit-ID: 156a2b022907687f28c72d1ba601015f295cd99e 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]); Fri, 25 Oct 2013 03:32:19 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2527 Lines: 63 Commit-ID: 156a2b022907687f28c72d1ba601015f295cd99e Gitweb: http://git.kernel.org/tip/156a2b022907687f28c72d1ba601015f295cd99e Author: Adrian Hunter AuthorDate: Tue, 22 Oct 2013 10:34:16 +0300 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 23 Oct 2013 10:24:29 -0300 perf sched: Optimize build time builtin-sched.c took a log time to build with -O6 optimization. This turned out to be caused by: .curr_pid = { [0 ... MAX_CPUS - 1] = -1 }, Fix by initializing curr_pid programmatically. This addresses the problem cured in f36f83f947ed using a smaller hammer. Signed-off-by: Adrian Hunter Acked-by: David Ahern Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1382427258-17495-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-sched.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 5a33856..ddb5dc1 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1670,7 +1670,6 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) .sort_list = LIST_HEAD_INIT(sched.sort_list), .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, - .curr_pid = { [0 ... MAX_CPUS - 1] = -1 }, .sort_order = default_sort_order, .replay_repeat = 10, .profile_cpu = -1, @@ -1732,6 +1731,10 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) .switch_event = replay_switch_event, .fork_event = replay_fork_event, }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) + sched.curr_pid[i] = -1; argc = parse_options(argc, argv, sched_options, sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/