Commit a1853e2c authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

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: default avatarPeter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Tested-by: default avatarArnaldo 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.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent b34b3bf0
...@@ -27,6 +27,14 @@ OPTIONS ...@@ -27,6 +27,14 @@ OPTIONS
Setup buildid cache directory. It has higher priority than Setup buildid cache directory. It has higher priority than
buildid.dir config file option. buildid.dir config file option.
-v::
--version::
Display perf version.
-h::
--help::
Run perf help command.
DESCRIPTION DESCRIPTION
----------- -----------
Performance counters for Linux are a new kernel-based subsystem Performance counters for Linux are a new kernel-based subsystem
......
...@@ -161,6 +161,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) ...@@ -161,6 +161,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
break; 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. * Check remaining flags.
*/ */
......
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