Commit a1853e2c authored Oct 05, 2015 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Oct 05, 2015

perf tools: Handle -h and -v options



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 <peterz@infradead.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1444068369-20978-10-git-send-email-jolsa@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent b34b3bf0

tools/perf/Documentation/perf.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -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

tools/perf/perf.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -161,6 +161,20 @@ static int handle_options(const char **argv, int argc, int *envchanged)
		if (!strcmp(cmd, "--help") \|\| !strcmp(cmd, "--version"))
		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.
		*/

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