Commit-ID: 44d742e01e6d3dd544ee1873b660a3c8bc1413bb
Gitweb: http://git.kernel.org/tip/44d742e01e6d3dd544ee1873b660a3c8bc1413bb
Author: David Ahern <dsahern@xxxxxxxxx>
AuthorDate: Wed, 30 Oct 2013 10:28:29 -0600
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 5 Nov 2013 14:26:41 -0300
perf list: Add usage
Currently 'perf list' is not very helpful if you forget the syntax:
$ perf list -h
List of pre-defined events (to be used in -e):
After:
$ perf list -h
usage: perf list [hw|sw|cache|tracepoint|pmu|event_glob]
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/527133AD.4030003@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-list.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 45000e7..011195e 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -14,20 +14,31 @@
#include "util/parse-events.h"
#include "util/cache.h"
#include "util/pmu.h"
+#include "util/parse-options.h"
int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
{
int i;
+ const struct option list_options[] = {
+ OPT_END()
+ };
+ const char * const list_usage[] = {
+ "perf list [hw|sw|cache|tracepoint|pmu|event_glob]",
+ NULL
+ };
+
+ argc = parse_options(argc, argv, list_options, list_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
setup_pager();
- if (argc == 1) {
+ if (argc == 0) {
print_events(NULL, false);
return 0;
}
- for (i = 1; i < argc; ++i) {
- if (i > 2)
+ for (i = 0; i < argc; ++i) {
+ if (i)
putchar('\n');
if (strncmp(argv[i], "tracepoint", 10) == 0)
print_tracepoint_events(NULL, NULL, false);
--
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