diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-04-01 21:54:19 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-04-02 00:49:02 +0200 |
commit | 8302294f43250dc337108c51882a6007f2b1e2e0 (patch) | |
tree | 85acd4440799c46a372df9cad170fa0c21e59096 /include/linux/trace_clock.h | |
parent | 4fe70410d9a219dabb47328effccae7e7f2a6e26 (diff) | |
parent | 2e572895bf3203e881356a4039ab0fa428ed2639 (diff) |
Merge branch 'tracing/core-v2' into tracing-for-linus
Conflicts:
include/linux/slub_def.h
lib/Kconfig.debug
mm/slob.c
mm/slub.c
Diffstat (limited to 'include/linux/trace_clock.h')
-rw-r--r-- | include/linux/trace_clock.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/trace_clock.h b/include/linux/trace_clock.h new file mode 100644 index 00000000000..7a813038408 --- /dev/null +++ b/include/linux/trace_clock.h @@ -0,0 +1,19 @@ +#ifndef _LINUX_TRACE_CLOCK_H +#define _LINUX_TRACE_CLOCK_H + +/* + * 3 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 + */ +#include <linux/compiler.h> +#include <linux/types.h> + +extern u64 notrace trace_clock_local(void); +extern u64 notrace trace_clock(void); +extern u64 notrace trace_clock_global(void); + +#endif /* _LINUX_TRACE_CLOCK_H */ |