user/sven/linux.git/include/linux/trace_clock.h, branch v3.0.85Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v3.0.852009-02-26T17:44:06Ztracing: implement trace_clock_*() APIs2009-02-26T17:44:06ZIngo Molnarmingo@elte.hu2009-02-26T17:47:11Zurn:sha1:14131f2f98ac350ee9e73faed916d2238a8b6a0d
Impact: implement new tracing timestamp APIs
Add three trace clock variants, with differing scalability/precision
tradeoffs:
- local: CPU-local trace clock
- medium: scalable global clock with some jitter
- global: globally monotonic, serialized clock
Make the ring-buffer use the local trace clock internally.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>