Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 22/29] locking, tsx: Add a trace point for elision skipping | Date | Fri, 22 Mar 2013 18:25:16 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
For tuning the adaptive locking algorithms it's useful to trace adaptive elision skipping. Add a trace point for this case.
Used in followon patches
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- include/trace/events/elision.h | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) create mode 100644 include/trace/events/elision.h
diff --git a/include/trace/events/elision.h b/include/trace/events/elision.h new file mode 100644 index 0000000..5d16d02 --- /dev/null +++ b/include/trace/events/elision.h @@ -0,0 +1,31 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM elision + +#if !defined(_TRACE_ELISION_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_ELISION_H + +#include <linux/lockdep.h> +#include <linux/tracepoint.h> + +#ifdef CONFIG_RTM_LOCKS + +TRACE_EVENT(elision_skip_start, + TP_PROTO(void *lock, u32 status), + TP_ARGS(lock, status), + TP_STRUCT__entry( + __field(void *, lock) + __field(u32, status) + ), + TP_fast_assign( + __entry->lock = lock; + __entry->status = status; + ), + TP_printk("%p %x", __entry->lock, __entry->status) +); + +#endif + +#endif + +/* This part must be outside protection */ +#include <trace/define_trace.h> -- 1.7.7.6
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