From: Jiri Olsa <[email protected]>
Adding handling for '-h' and '-v' options to invoke help and version
command respectively.
Current behaviour is:
$ perf -v
Unknown option: -v
Usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]
$ perf -h
Unknown option: -h
Usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]
New behaviour:
$ perf -h
usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]
The most commonly used perf commands are:
annotate Read perf.data (created by perf record) and display
annotated code
archive Create archive with object files with build-ids found in
perf.data file
bench General framework for benchmark suites
...
$ perf -v
perf version 4.3.rc3.gc99e32
Updated man page.
Requested-by: Peter Zijlstra <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link:
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/Documentation/perf.txt | 8 ++++++++
tools/perf/perf.c | 14 ++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/tools/perf/Documentation/perf.txt
b/tools/perf/Documentation/perf.txt
index 2b131776363e..864e37597252 100644
--- a/tools/perf/Documentation/perf.txt
+++ b/tools/perf/Documentation/perf.txt
@@ -27,6 +27,14 @@ OPTIONS
Setup buildid cache directory. It has higher priority than
buildid.dir config file option.
+-v::
+--version::
+ Display perf version.
+
+-h::
+--help::
+ Run perf help command.
+
DESCRIPTION
-----------
Performance counters for Linux are a new kernel-based subsystem
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 1fded922bcc8..543713422d14 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -162,6 +162,20 @@ static int handle_options(const char ***argv, int *argc,
int *envchanged)
break;
/*
+ * Shortcut for '-h' and '-v' options to invoke help
+ * and version command.
+ */
+ if (!strcmp(cmd, "-h")) {
+ (*argv)[0] = "--help";
+ break;
+ }
+
+ if (!strcmp(cmd, "-v")) {
+ (*argv)[0] = "--version";
+ break;
+ }
+
+ /*
* Check remaining flags.
*/
if (!prefixcmp(cmd, CMD_EXEC_PATH)) {
--
2.1.0
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