1 files changed, 58 insertions, 0 deletions

diff --git a/include/trace/events/filemap.h b/include/trace/events/filemap.h
new file mode 100644
index 000000000000..0421f49a20f7
--- /dev/null
+++ b/include/trace/events/filemap.h
@@ -0,0 +1,58 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM filemap
+
+#if !defined(_TRACE_FILEMAP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_FILEMAP_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+#include <linux/mm.h>
+#include <linux/memcontrol.h>
+#include <linux/device.h>
+#include <linux/kdev_t.h>
+
+DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,
+
+        TP_PROTO(struct page *page),
+
+        TP_ARGS(page),
+
+        TP_STRUCT__entry(
+                __field(struct page *, page)
+                __field(unsigned long, i_ino)
+                __field(unsigned long, index)
+                __field(dev_t, s_dev)
+        ),
+
+        TP_fast_assign(
+                __entry->page = page;
+                __entry->i_ino = page->mapping->host->i_ino;
+                __entry->index = page->index;
+                if (page->mapping->host->i_sb)
+                        __entry->s_dev = page->mapping->host->i_sb->s_dev;
+                else
+                        __entry->s_dev = page->mapping->host->i_rdev;
+        ),
+
+        TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu",
+                MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
+                __entry->i_ino,
+                __entry->page,
+                page_to_pfn(__entry->page),
+                __entry->index << PAGE_SHIFT)
+);
+
+DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_delete_from_page_cache,
+        TP_PROTO(struct page *page),
+        TP_ARGS(page)
+        );
+
+DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_add_to_page_cache,
+        TP_PROTO(struct page *page),
+        TP_ARGS(page)
+        );
+
+#endif /* _TRACE_FILEMAP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>