vmscan: tracing: add trace event when a page is written

[profile/ivi/kernel-adaptation-intel-automotive.git] / include / trace / events / vmscan.h

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index c0552be..69789dc 100644 (file)
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -8,6 +8,24 @@
 #include <linux/tracepoint.h>
 #include "gfpflags.h"
 
+#define RECLAIM_WB_ANON                0x0001u
+#define RECLAIM_WB_FILE                0x0002u
+#define RECLAIM_WB_SYNC                0x0004u
+#define RECLAIM_WB_ASYNC       0x0008u
+
+#define show_reclaim_flags(flags)                              \
+       (flags) ? __print_flags(flags, "|",                     \
+               {RECLAIM_WB_ANON,       "RECLAIM_WB_ANON"},     \
+               {RECLAIM_WB_FILE,       "RECLAIM_WB_FILE"},     \
+               {RECLAIM_WB_SYNC,       "RECLAIM_WB_SYNC"},     \
+               {RECLAIM_WB_ASYNC,      "RECLAIM_WB_ASYNC"}     \
+               ) : "RECLAIM_WB_NONE"
+
+#define trace_reclaim_flags(page, sync) ( \
+       (page_is_file_cache(page) ? RECLAIM_WB_FILE : RECLAIM_WB_ANON) | \
+       (sync == PAGEOUT_IO_SYNC ? RECLAIM_WB_SYNC : RECLAIM_WB_ASYNC)   \
+       )
+
 TRACE_EVENT(mm_vmscan_kswapd_sleep,
 
        TP_PROTO(int nid),
@@ -155,6 +173,29 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
                __entry->nr_lumpy_failed)
 );
 
+TRACE_EVENT(mm_vmscan_writepage,
+
+       TP_PROTO(struct page *page,
+               int reclaim_flags),
+
+       TP_ARGS(page, reclaim_flags),
+
+       TP_STRUCT__entry(
+               __field(struct page *, page)
+               __field(int, reclaim_flags)
+       ),
+
+       TP_fast_assign(
+               __entry->page = page;
+               __entry->reclaim_flags = reclaim_flags;
+       ),
+
+       TP_printk("page=%p pfn=%lu flags=%s",
+               __entry->page,
+               page_to_pfn(__entry->page),
+               show_reclaim_flags(__entry->reclaim_flags))
+);
+
 #endif /* _TRACE_VMSCAN_H */
 
 /* This part must be outside protection */