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-rw-r--r--include/trace/events/kmem.h38
-rw-r--r--mm/page_alloc.c4
2 files changed, 42 insertions, 0 deletions
diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h
index 0d358a0d45c..aae16ee1760 100644
--- a/include/trace/events/kmem.h
+++ b/include/trace/events/kmem.h
@@ -299,6 +299,44 @@ TRACE_EVENT(mm_page_alloc,
show_gfp_flags(__entry->gfp_flags))
);
+TRACE_EVENT(mm_page_alloc_extfrag,
+
+ TP_PROTO(struct page *page,
+ int alloc_order, int fallback_order,
+ int alloc_migratetype, int fallback_migratetype),
+
+ TP_ARGS(page,
+ alloc_order, fallback_order,
+ alloc_migratetype, fallback_migratetype),
+
+ TP_STRUCT__entry(
+ __field( struct page *, page )
+ __field( int, alloc_order )
+ __field( int, fallback_order )
+ __field( int, alloc_migratetype )
+ __field( int, fallback_migratetype )
+ ),
+
+ TP_fast_assign(
+ __entry->page = page;
+ __entry->alloc_order = alloc_order;
+ __entry->fallback_order = fallback_order;
+ __entry->alloc_migratetype = alloc_migratetype;
+ __entry->fallback_migratetype = fallback_migratetype;
+ ),
+
+ TP_printk("page=%p pfn=%lu alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
+ __entry->page,
+ page_to_pfn(__entry->page),
+ __entry->alloc_order,
+ __entry->fallback_order,
+ pageblock_order,
+ __entry->alloc_migratetype,
+ __entry->fallback_migratetype,
+ __entry->fallback_order < pageblock_order,
+ __entry->alloc_migratetype == __entry->fallback_migratetype)
+);
+
#endif /* _TRACE_KMEM_H */
/* This part must be outside protection */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 80f954d82d7..77f517c18b3 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -853,6 +853,10 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype)
start_migratetype);
expand(zone, page, order, current_order, area, migratetype);
+
+ trace_mm_page_alloc_extfrag(page, order, current_order,
+ start_migratetype, migratetype);
+
return page;
}
}