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-rw-r--r--kernel/events/internal.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 082832738c8f..5150d5f84c03 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -116,6 +116,11 @@ static inline int page_order(struct perf_buffer *rb)
}
#endif
+static inline int data_page_nr(struct perf_buffer *rb)
+{
+ return rb->nr_pages << page_order(rb);
+}
+
static inline unsigned long perf_data_size(struct perf_buffer *rb)
{
return rb->nr_pages << (PAGE_SHIFT + page_order(rb));