X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=mm%2Fpage-writeback.c;fp=mm%2Fpage-writeback.c;h=d556cd829af66ab6431334bafb2d5b1e8a583334;hb=028c2dd184c097809986684f2f0627eea5529fea;hp=37498ef6154836943f3478304bf7440ab255669a;hpb=455b2864686d3591b3b2f39eb46290c95f76471f;p=mv-sheeva.git

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 37498ef6154..d556cd829af 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -34,6 +34,7 @@
 #include <linux/syscalls.h>
 #include <linux/buffer_head.h>
 #include <linux/pagevec.h>
+#include <trace/events/writeback.h>
 
 /*
  * After a CPU has dirtied this many pages, balance_dirty_pages_ratelimited
@@ -535,11 +536,13 @@ static void balance_dirty_pages(struct address_space *mapping,
 		 * threshold otherwise wait until the disk writes catch
 		 * up.
 		 */
+		trace_wbc_balance_dirty_start(&wbc, bdi);
 		if (bdi_nr_reclaimable > bdi_thresh) {
 			writeback_inodes_wb(&bdi->wb, &wbc);
 			pages_written += write_chunk - wbc.nr_to_write;
 			get_dirty_limits(&background_thresh, &dirty_thresh,
 				       &bdi_thresh, bdi);
+			trace_wbc_balance_dirty_written(&wbc, bdi);
 		}
 
 		/*
@@ -565,6 +568,7 @@ static void balance_dirty_pages(struct address_space *mapping,
 		if (pages_written >= write_chunk)
 			break;		/* We've done our duty */
 
+		trace_wbc_balance_dirty_wait(&wbc, bdi);
 		__set_current_state(TASK_INTERRUPTIBLE);
 		io_schedule_timeout(pause);