]> git.baikalelectronics.ru Git - kernel.git/commit
perf tools: Improve ambiguous option help message
authorNamhyung Kim <namhyung@kernel.org>
Sat, 24 Oct 2015 15:49:24 +0000 (00:49 +0900)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 26 Oct 2015 16:59:06 +0000 (13:59 -0300)
commit7784324868288cb01d310414a3d98353187246e4
tree5632b44567e3c6aa25acc67fe7be16db443e84ed
parent77375839f36483051e0337fab10e642e9bbb2c0a
perf tools: Improve ambiguous option help message

Currently if an option name is ambiguous it only prints first two
matched option names but no help.  It'd be better it could show all
possible names and help messages too.

Before:
  $ perf report --show
    Error: Ambiguous option: show (could be --show-total-period or
                                            --show-ref-call-graph)
   Usage: perf report [<options>]

After:
  $ perf report --show
    Error: Ambiguous option: show (could be --show-total-period or
                                            --show-ref-call-graph)
   Usage: perf report [<options>]

      -n, --show-nr-samples
                              Show a column with the number of samples
          --showcpuutilization
                              Show sample percentage for different cpu modes
      -I, --show-info         Display extended information about perf.data file
          --show-total-period
                              Show a column with the sum of periods
          --show-ref-call-graph
                              Show callgraph from reference event

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445701767-12731-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/parse-options.c