commit 5e17b28f1e246b98e08cb463f7d72cff6415fc53
author Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Mon Oct 27 16:31:31 2014 -0400
committer Arnaldo Carvalho de Melo <acme@redhat.com> Wed Oct 29 10:32:49 2014 -0200
tree 56ab831fd090f3f3a484b796ae38a0044fa73a43
parent 2987e32f75dcb40bce0f3ab1d5d48cc1c580fd8b

perf probe: Add --quiet option to suppress output result message

Add --quiet(-q) option to suppress output result message for --add, and
--del options (Note that --lines/funcs/vars are not affected). This
option is useful if you run the perf probe inside your scripts.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20141027203131.21219.35170.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-probe.c

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 2d3577d..921bb69 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -55,6 +55,7 @@
 	bool show_funcs;
 	bool mod_events;
 	bool uprobes;
+	bool quiet;
 	int nevents;
 	struct perf_probe_event events[MAX_PROBES];
 	struct strlist *dellist;
@@ -315,6 +316,8 @@
 	struct option options[] = {
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show parsed arguments, etc)"),
+	OPT_BOOLEAN('q', "quiet", &params.quiet,
+		    "be quiet (do not show any mesages)"),
 	OPT_BOOLEAN('l', "list", &params.list_events,
 		    "list up current probe events"),
 	OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
@@ -404,6 +407,14 @@
 		}
 	}
 
+	if (params.quiet) {
+		if (verbose != 0) {
+			pr_err("  Error: -v and -q are exclusive.\n");
+			return -EINVAL;
+		}
+		verbose = -1;
+	}
+
 	if (params.max_probe_points == 0)
 		params.max_probe_points = MAX_PROBES;