From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@redhat.com>,
Jiri Olsa <jolsa@kernel.org>, Borislav Petkov <bp@alien8.de>,
David Ahern <dsahern@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 12/18] perf record: Add -a as default target
Date: Mon, 20 Feb 2017 16:08:33 -0300 [thread overview]
Message-ID: <20170220190839.3928-13-acme@kernel.org> (raw)
In-Reply-To: <20170220190839.3928-1-acme@kernel.org>
From: Jiri Olsa <jolsa@redhat.com>
Running 'perf record' with no target (-a, -p, -t, etc) will now collect
system wide data.
Commiter notes:
Testing it:
[root@jouet ~]# perf record
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.351 MB perf.data (366 samples) ]
#
is equivalent to:
# perf record -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.411 MB perf.data (978 samples) ]
#
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170217170018.GA15389@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-record.txt | 2 +-
tools/perf/builtin-record.c | 4 +++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 27256bc68eda..b16003ec14a7 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -157,7 +157,7 @@ OPTIONS
-a::
--all-cpus::
- System-wide collection from all CPUs.
+ System-wide collection from all CPUs (default if no target is specified).
-p::
--pid=::
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 6cd6776052e7..b87bbef73394 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1677,8 +1677,10 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
+
+ /* Make system wide (-a) the default target. */
if (!argc && target__none(&rec->opts.target))
- usage_with_options(record_usage, record_options);
+ rec->opts.target.system_wide = true;
if (nr_cgroups && !rec->opts.target.system_wide) {
usage_with_options_msg(record_usage, record_options,
--
2.9.3
next prev parent reply other threads:[~2017-02-20 19:10 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 19:08 [GIT PULL 00/18] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 01/18] tools perf scripting python: clang doesn't have -spec, remove it Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 02/18] perf python: Filter out -specs=/a/b/c from the python binding cc options Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 03/18] tools lib traceevent: It's preempt not prempt Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 04/18] perf session: Fix DEBUG=1 build with clang Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 05/18] perf cpumap: Add cpu__max_present_cpu() Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 06/18] perf header: Make build_cpu_topology skip offline/absent CPUs Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 07/18] perf tools: Replace _SC_NPROCESSORS_CONF with max_present_cpu in cpu_topology_map Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 08/18] perf build: Add special fixdep cleaning rule Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 09/18] perf tools: Move new_term arguments into struct parse_events_term template Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 10/18] perf tools: Fail on using multiple bits long terms without value Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 11/18] perf stat: Add -a as default target Arnaldo Carvalho de Melo
2017-02-20 19:15 ` Borislav Petkov
2017-02-20 19:55 ` Arnaldo Carvalho de Melo
2017-02-20 19:59 ` Borislav Petkov
2017-02-21 7:49 ` Jiri Olsa
2017-02-20 19:08 ` Arnaldo Carvalho de Melo [this message]
2017-02-20 19:08 ` [PATCH 13/18] perf utils: Add perf_quiet_option() Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 14/18] perf utils: Check verbose flag properly Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 15/18] perf report: Add -q/--quiet option Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 16/18] perf diff: " Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 17/18] perf annotate: " Arnaldo Carvalho de Melo
2017-02-20 19:08 ` [PATCH 18/18] perf record: Honor --quiet option properly Arnaldo Carvalho de Melo
2017-02-21 8:08 ` [GIT PULL 00/18] perf/core improvements and fixes Ingo Molnar
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