[PATCH] perf ftrace latency: Remove unnecessary "--" from --use-nsec option

From: Namhyung Kim
Date: Thu May 25 2023 - 17:20:48 EST

The option name should not have the dashes. Current version shows four
dashes for the option.

$ perf ftrace latency -h

Usage: perf ftrace [<options>] [<command>]
or: perf ftrace [<options>] -- [<command>] [<options>]
or: perf ftrace {trace|latency} [<options>] [<command>]
or: perf ftrace {trace|latency} [<options>] -- [<command>] [<options>]

-b, --use-bpf Use BPF to measure function latency
-n, ----use-nsec Use nano-second histogram
-T, --trace-funcs <func>
Show latency of given function

Fixes: 84005bb61486 ("perf ftrace latency: Add -n/--use-nsec option")
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
tools/perf/builtin-ftrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index ad2a9ae041f6..ac2e6c75f912 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -1177,7 +1177,7 @@ int cmd_ftrace(int argc, const char **argv)
OPT_BOOLEAN('b', "use-bpf", &ftrace.target.use_bpf,
"Use BPF to measure function latency"),
- OPT_BOOLEAN('n', "--use-nsec", &ftrace.use_nsec,
+ OPT_BOOLEAN('n', "use-nsec", &ftrace.use_nsec,
"Use nano-second histogram"),