[lttng-dev] [RFC-PATCH] Adding trap tracepoints definitions

[Mathieu Desnoyers]

Subject change:

"Adding trap tracepoints definitions"

-> "Add trap trace event definitions"

* Francis Deslauriers (fdeslaur at gmail.com) wrote:
> This patch adds new trap tracepoint definitions. It enables each
> architecture to add trap instrumentation.

"This patch" should be avoided (we know it's a patch).

->

Add trace trace event definitions. It will allow each architecture to
instrument their traps.


I'm being even more strict than usual as you notice given that this
patch is targeting lkml.

Thanks,

Mathieu

> 
> Signed-off-by: Francis Deslauriers <fdeslaur at gmail.com>
> ---
>  include/trace/events/trap.h |   47 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 include/trace/events/trap.h
> 
> diff --git a/include/trace/events/trap.h b/include/trace/events/trap.h
> new file mode 100644
> index 0000000..171b9cf
> --- /dev/null
> +++ b/include/trace/events/trap.h
> @@ -0,0 +1,47 @@
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM trap
> +
> +#if !defined(_TRACE_TRAP_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define _TRACE_TRAP_H
> +
> +#include <linux/tracepoint.h>
> +
> +TRACE_EVENT(trap_entry,
> +
> +	TP_PROTO(struct pt_regs *regs, long trap),
> +
> +	TP_ARGS(regs, trap),
> +
> +	TP_STRUCT__entry(
> +		__field(	long,		trap	)
> +		__field(	unsigned long,	ip	)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->trap	= trap;
> +		__entry->ip	= regs ? instruction_pointer(regs) : 0UL;
> +	),
> +
> +	TP_printk("number=%ld ip=%lu", __entry->trap, __entry->ip)
> +);
> +
> +TRACE_EVENT(trap_exit,
> +
> +	TP_PROTO(long trap),
> +
> +	TP_ARGS(trap),
> +
> +	TP_STRUCT__entry(
> +		__field(	long,	trap	)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->trap	= trap;
> +	),
> +
> +	TP_printk("number=%ld", __entry->trap)
> +);
> +
> +#endif /* _TRACE_TRAP_H */
> +/* This part must be outside protection */
> +#include <trace/define_trace.h>
> -- 
> 1.7.10.4
> 
> 
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com