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| author | David Ahern <dsahern@gmail.com> | 2013-10-30 10:28:29 -0600 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-11-05 14:26:41 -0300 |
| commit | 44d742e01e6d3dd544ee1873b660a3c8bc1413bb (patch) | |
| tree | e305d70f0bf65c430a9893a888776b555bd6dace | |
| parent | 8e00ddc9dfe09ee131144fdaf6c96ebe95bbbbcb (diff) | |
| download | linux-44d742e01e6d3dd544ee1873b660a3c8bc1413bb.tar.bz2 | |
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@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/527133AD.4030003@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-list.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index 45000e7d4398..011195e38f21 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); |