1. 6ca6cca tracing: optimize global_trace_clock cachelines by Steven Rostedt · 15 years ago
  2. b8b9426 tracing: fix four sparse warnings by Dmitri Vorobiev · 16 years ago
  3. 6cc3c6e trace_clock: fix preemption bug by Peter Zijlstra · 16 years ago
  4. 14131f2 tracing: implement trace_clock_*() APIs by Ingo Molnar · 16 years ago