1. 8647093 perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ by Ingo Molnar · 16 years ago[Renamed from Documentation/perf_counter/Documentation/perf-help.txt]
  2. 6e6b754 perf_counter tools: Tidy up manpage details by Ingo Molnar · 17 years ago
  3. 6142fdd perf_counter tools: add 'perf help' by Ingo Molnar · 16 years ago