page-faults events record the invoke to handle_mm_fault, but the invoke
may come from do_page_fault or gup. In some use cases, the finer event count
mey be needed, so add trace events support for:

__get_user_pages
__get_user_pages_fast
fixup_user_fault

Signed-off-by: Yang Shi <yang....@linaro.org>
---
 include/trace/events/gup.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 include/trace/events/gup.h

diff --git a/include/trace/events/gup.h b/include/trace/events/gup.h
new file mode 100644
index 0000000..ac0e011
--- /dev/null
+++ b/include/trace/events/gup.h
@@ -0,0 +1,63 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM gup
+
+#if !defined(_TRACE_GUP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_GUP_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(gup_fixup_user_fault,
+
+       TP_PROTO(unsigned long address),
+
+       TP_ARGS(address),
+
+       TP_STRUCT__entry(
+               __field(        unsigned long,  address         )
+       ),
+
+       TP_fast_assign(
+               __entry->address        = address;
+       ),
+
+       TP_printk("address=%lx",  __entry->address)
+);
+
+DECLARE_EVENT_CLASS(gup,
+
+       TP_PROTO(unsigned long start, unsigned int nr_pages),
+
+       TP_ARGS(start, nr_pages),
+
+       TP_STRUCT__entry(
+               __field(        unsigned long,  start           )
+               __field(        unsigned int,   nr_pages        )
+       ),
+
+       TP_fast_assign(
+               __entry->start          = start;
+               __entry->nr_pages       = nr_pages;
+       ),
+
+       TP_printk("start=%lx nr_pages=%d", __entry->start, __entry->nr_pages)
+);
+
+DEFINE_EVENT(gup, gup_get_user_pages,
+
+       TP_PROTO(unsigned long start, unsigned int nr_pages),
+
+       TP_ARGS(start, nr_pages)
+);
+
+DEFINE_EVENT(gup, gup_get_user_pages_fast,
+
+       TP_PROTO(unsigned long start, unsigned int nr_pages),
+
+       TP_ARGS(start, nr_pages)
+);
+
+#endif /* _TRACE_GUP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
-- 
2.0.2

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