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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-26 18:47:11 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-26 18:44:06 +0100 |
| commit | 14131f2f98ac350ee9e73faed916d2238a8b6a0d (patch) | |
| tree | bf490d104276142e914f1245bbc9f44cb0d2bc9b /kernel/sched_clock.c | |
| parent | sched: sched_clock() improvement: use in_nmi() (diff) | |
| download | linux-14131f2f98ac350ee9e73faed916d2238a8b6a0d.tar.xz linux-14131f2f98ac350ee9e73faed916d2238a8b6a0d.zip | |
tracing: implement trace_clock_*() APIs
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>
Diffstat (limited to 'kernel/sched_clock.c')
0 files changed, 0 insertions, 0 deletions