linux-kernel - [PATCH 16/23] perf mem: Add -q/--quiet option

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Date:   Wed,  8 Mar 2017 00:08:44 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, kernel-team@....com
Subject: [PATCH 16/23] perf mem: Add -q/--quiet option

The -q/--quiet option is to suppress any message.  Sometimes users just
want to run the command and it can be used for that case.

Suggested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/Documentation/perf-mem.txt | 8 ++++++++
 tools/perf/builtin-mem.c              | 6 +++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
index 73496320fca3..5ad90572299c 100644
--- a/tools/perf/Documentation/perf-mem.txt
+++ b/tools/perf/Documentation/perf-mem.txt
@@ -59,6 +59,14 @@ OPTIONS
 --ldload::
 	Specify desired latency for loads event.
 
+-v::
+--verbose::
+        Be more verbose. (show debug messages, etc)
+
+-q::
+--quiet::
+	Do not show any message.  (Suppress -v)
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-report[1]
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 6114e07ca613..24d084327c1e 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -70,6 +70,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 	OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
 	OPT_INCR('v', "verbose", &verbose,
 		 "be more verbose (show counter open errors, etc)"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
 	OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
 	OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
 	OPT_END()
@@ -83,6 +84,9 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 	if (!rec_argv)
 		return -1;
 
+	if (quiet)
+		perf_quiet_option();
+
 	rec_argv[i++] = "record";
 
 	if (mem->operation & MEM_OPERATION_LOAD)
@@ -144,7 +148,7 @@ dump_raw_samples(struct perf_tool *tool,
 	struct addr_location al;
 	const char *fmt;
 
-	if (machine__resolve(machine, &al, sample) < 0) {
+	if (machine__resolve(machine, &al, sample) < 0 && !quiet) {
 		fprintf(stderr, "problem processing %d event, skipping it.\n",
 				event->header.type);
 		return -1;
-- 
2.11.0