From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755130AbaCYUe0 (ORCPT ); Tue, 25 Mar 2014 16:34:26 -0400 Received: from mga02.intel.com ([134.134.136.20]:31920 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754122AbaCYUeZ (ORCPT ); Tue, 25 Mar 2014 16:34:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,730,1389772800"; d="scan'208";a="507434035" From: Andi Kleen To: acme@infradead.org Cc: mingo@kernel.org, linux-kernel@vger.kernel.org, peterz@infradead.org, eranian@google.com, namhyung@kernel.org, jolsa@redhat.com, Andi Kleen Subject: [PATCH] tools, perf: Allow the user to disable time stamps Date: Tue, 25 Mar 2014 13:34:05 -0700 Message-Id: <1395779645-25452-1-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.8.5.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Time stamps are always implicitely enabled for record currently. The old --time/-T option is a nop. Allow the user to disable timestamps by using --no-time This can cause some minor misaccounting (by missing mmaps), but significantly lowers the size of perf.data The defaults are unchanged. Signed-off-by: Andi Kleen --- tools/perf/builtin-record.c | 1 + tools/perf/util/evsel.c | 9 ++++++--- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 3c394bf..8e92d3c 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -800,6 +800,7 @@ static const char * const record_usage[] = { */ static struct record record = { .opts = { + .sample_time = true, .mmap_pages = UINT_MAX, .user_freq = UINT_MAX, .user_interval = ULLONG_MAX, diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 22e18a2..a15efc4 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -613,9 +613,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) if (opts->period) perf_evsel__set_sample_bit(evsel, PERIOD); - if (!perf_missing_features.sample_id_all && - (opts->sample_time || !opts->no_inherit || - target__has_cpu(&opts->target) || per_cpu)) + /* + * When the user explicitely disabled time don't force it here. + */ + if (opts->sample_time && + (!perf_missing_features.sample_id_all && + (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu))) perf_evsel__set_sample_bit(evsel, TIME); if (opts->raw_samples) { -- 1.8.5.3