* Francis Deslauriers (fdesl...@gmail.com) wrote:
> Add page_fault_entry and page_fault_exit event definitions. It will
> allow each architecture to instrument their page faults.
>
> Signed-off-by: Francis Deslauriers <fdesl...@gmail.com>
> Reviewed-by: Raphaël Beamonte <raphael.beamo...@gmail.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
> ---
> include/trace/events/fault.h | 51
> ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
> create mode 100644 include/trace/events/fault.h
>
> diff --git a/include/trace/events/fault.h b/include/trace/events/fault.h
> new file mode 100644
> index 0000000..522ddee
> --- /dev/null
> +++ b/include/trace/events/fault.h
> @@ -0,0 +1,51 @@
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM fault
> +
> +#if !defined(_TRACE_FAULT_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define _TRACE_FAULT_H
> +
> +#include <linux/tracepoint.h>
> +
> +TRACE_EVENT(page_fault_entry,
> +
> + TP_PROTO(struct pt_regs *regs, unsigned long address,
> + int write_access),
> +
> + TP_ARGS(regs, address, write_access),
> +
> + TP_STRUCT__entry(
> + __field( unsigned long, ip )
> + __field( unsigned long, addr )
> + __field( uint8_t, write )
> + ),
> +
> + TP_fast_assign(
> + __entry->ip = regs ? instruction_pointer(regs) : 0UL;
> + __entry->addr = address;
> + __entry->write = !!write_access;
> + ),
> +
> + TP_printk("ip=%lu addr=%lu write_access=%d",
> + __entry->ip, __entry->addr, __entry->write)
> +);
> +
> +TRACE_EVENT(page_fault_exit,
> +
> + TP_PROTO(int result),
> +
> + TP_ARGS(result),
> +
> + TP_STRUCT__entry(
> + __field( int, res )
> + ),
> +
> + TP_fast_assign(
> + __entry->res = result;
> + ),
> +
> + TP_printk("result=%d", __entry->res)
> +);
> +
> +#endif /* _TRACE_FAULT_H */
> +/* This part must be outside protection */
> +#include <trace/define_trace.h>
> --
> 1.7.10.4
>
>
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--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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