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Date: Mon, 20 Feb 2017 16:08:37 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>,
Jiri Olsa <jolsa@...nel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>, kernel-team@....com,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 16/18] perf diff: Add -q/--quiet option
From: Namhyung Kim <namhyung@...nel.org>
The -q/--quiet option is to suppress any message. Sometimes users just
want to see the numbers and it can be used for that case.
Committer notes:
Before:
# perf diff | head -10
Failed to open /tmp/perf-6678.map, continuing without symbols
Failed to open /tmp/perf-6678.map, continuing without symbols
Failed to open /tmp/perf-2646.map, continuing without symbols
# Event 'cycles'
#
# Baseline Delta Abs Shared Object Symbol
# ........ ......... .......................... ............................................
#
5.36% -1.76% [kernel.vmlinux] [k] intel_idle
2.80% +1.48% firefox [.] 0x00000000000101fe
57.12% -1.25% libxul.so [.] 0x00000000009bea92
1.36% -1.11% [kernel.vmlinux] [k] __schedule
4.26% -1.00% perf-6678.map [.] 0x00007fac4b0e9320
After:
# perf diff -q | head -10
5.36% -1.76% [kernel.vmlinux] [k] intel_idle
2.80% +1.48% firefox [.] 0x00000000000101fe
57.12% -1.25% libxul.so [.] 0x00000000009bea92
1.36% -1.11% [kernel.vmlinux] [k] __schedule
4.26% -1.00% perf-6678.map [.] 0x00007fac4b0e9320
1.86% +0.95% [kernel.vmlinux] [k] update_blocked_averages
0.80% -0.70% [kernel.vmlinux] [k] native_sched_clock
0.74% -0.58% [kernel.vmlinux] [k] native_write_msr
0.76% -0.56% qemu-system-x86_64 [.] 0x00000000002395c0
+0.54% libpulsecommon-10.0.so [.] 0x000000000002d91b
#
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: kernel-team@....com
Link: http://lkml.kernel.org/r/20170217081742.17417-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/Documentation/perf-diff.txt | 4 ++++
tools/perf/builtin-diff.c | 14 ++++++++++----
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index 66dbe3dee74b..a79c84ae61aa 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -73,6 +73,10 @@ OPTIONS
Be verbose, for instance, show the raw counts in addition to the
diff.
+-q::
+--quiet::
+ Do not show any message. (Suppress -v)
+
-f::
--force::
Don't do ownership validation.
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 7ad0d78ea743..1b96a3122228 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -691,7 +691,7 @@ static void hists__process(struct hists *hists)
hists__precompute(hists);
hists__output_resort(hists, NULL);
- hists__fprintf(hists, true, 0, 0, 0, stdout,
+ hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
symbol_conf.use_callchain);
}
@@ -739,12 +739,14 @@ static void data_process(void)
hists__link(hists_base, hists);
}
- fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
- perf_evsel__name(evsel_base));
+ if (!quiet) {
+ fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
+ perf_evsel__name(evsel_base));
+ }
first = false;
- if (verbose > 0 || data__files_cnt > 2)
+ if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
data__fprintf();
/* Don't sort callchain for perf diff */
@@ -807,6 +809,7 @@ static const char * const diff_usage[] = {
static const struct option options[] = {
OPT_INCR('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
+ OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
"Show only items with match in baseline"),
OPT_CALLBACK('c', "compute", &compute,
@@ -1328,6 +1331,9 @@ int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
argc = parse_options(argc, argv, options, diff_usage, 0);
+ if (quiet)
+ perf_quiet_option();
+
if (symbol__init(NULL) < 0)
return -1;
--
2.9.3
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