From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932306AbbBRSnz (ORCPT ); Wed, 18 Feb 2015 13:43:55 -0500 Received: from terminus.zytor.com ([198.137.202.10]:41881 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752554AbbBRSnw (ORCPT ); Wed, 18 Feb 2015 13:43:52 -0500 Date: Wed, 18 Feb 2015 10:43:14 -0800 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: bp@suse.de, namhyung@kernel.org, efault@gmx.de, peterz@infradead.org, adrian.hunter@intel.com, dzickus@redhat.com, jolsa@redhat.com, tglx@linutronix.de, acme@redhat.com, fweisbec@gmail.com, eranian@google.com, hpa@zytor.com, mingo@kernel.org, linux-kernel@vger.kernel.org, dsahern@gmail.com Reply-To: mingo@kernel.org, hpa@zytor.com, eranian@google.com, linux-kernel@vger.kernel.org, dsahern@gmail.com, tglx@linutronix.de, jolsa@redhat.com, dzickus@redhat.com, peterz@infradead.org, adrian.hunter@intel.com, efault@gmx.de, bp@suse.de, namhyung@kernel.org, fweisbec@gmail.com, acme@redhat.com To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf trace: Support --events foo: bar --no-syscalls Git-Commit-ID: 726f3234dd125633438922a07a80f933f13daf82 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 726f3234dd125633438922a07a80f933f13daf82 Gitweb: http://git.kernel.org/tip/726f3234dd125633438922a07a80f933f13daf82 Author: Arnaldo Carvalho de Melo AuthorDate: Fri, 6 Feb 2015 10:16:45 +0100 Committer: Arnaldo Carvalho de Melo CommitDate: Fri, 13 Feb 2015 17:30:29 -0300 perf trace: Support --events foo:bar --no-syscalls I.e. support tracing just tracepoints, without strace like raw_syscalls:*. [acme@ssdandy linux]$ trace --no-sys --ev sched:*exec,sched:*switch,sched:*exit usleep 1 0.048 ( ): sched:sched_process_exec:filename=/usr/bin/usleep pid=27298 old_pid=27298) 0.369 ( ): sched:sched_switch:usleep:27298 [120] S ==> swapper/5:0 [120]) 0.452 ( ): sched:sched_process_exit:comm=usleep pid=27298 prio=120) [acme@ssdandy linux]$ TODO: remove that (...) thing when --no-syscalls is specified. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-vn0hsixsbhm31b2rpj97r96k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index a44ac93..b1c1df9 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2625,7 +2625,8 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) if (trace.summary_only) trace.summary = trace.summary_only; - if (!trace.trace_syscalls && !trace.trace_pgfaults) { + if (!trace.trace_syscalls && !trace.trace_pgfaults && + trace.evlist->nr_entries == 0 /* Was --events used? */) { pr_err("Please specify something to trace.\n"); return -1; }