f2fs: add a tracepoint for f2fs_write_{meta,node,data}_page

PATCH In review Chao Yu 1 participant 1 message May 6, 2014

Subsystems (3)

VFS Tracing F2FS file system

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Chao Yu

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2014-05-06 08:48 UTC #0 lore raw

PATCH 3/6 f2fs: add a tracepoint for f2fs_write_{meta,node,data}_page

This patch adds a tracepoint for f2fs_write_{meta,node,data}_page to trace when page is writting out.

Signed-off-by Chao Yu <[email protected]>

---
 fs/f2fs/checkpoint.c        |    2 ++
 fs/f2fs/data.c              |    2 ++
 fs/f2fs/node.c              |    2 ++
 include/trace/events/f2fs.h |    7 +++++++
 4 files changed, 13 insertions(+)

fs/f2fs/checkpoint.c +2 -0

index b6f6ead..7962aaf 100644
@@ -160,6 +160,8 @@ static int f2fs_write_meta_page(struct page *page,
 	struct inode *inode = page->mapping->host;
 	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 
+	trace_f2fs_writepage(page, META);
+
 	if (unlikely(sbi->por_doing))
 		goto redirty_out;
 	if (wbc->for_reclaim)

fs/f2fs/data.c +2 -0

index ea58fb6..b997d55 100644
@@ -788,6 +788,8 @@ static int f2fs_write_data_page(struct page *page,
 		.rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE,
 	};
 
+	trace_f2fs_writepage(page, DATA);
+
 	if (page->index < end_index)
 		goto write;

fs/f2fs/node.c +2 -0

index 059aaf5..49bdddb 100644
@@ -1199,6 +1199,8 @@ static int f2fs_write_node_page(struct page *page,
 		.rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE,
 	};
 
+	trace_f2fs_writepage(page, NODE);
+
 	if (unlikely(sbi->por_doing))
 		goto redirty_out;

include/trace/events/f2fs.h +7 -0

index 483804b..d70991e 100644
@@ -751,6 +751,13 @@ DECLARE_EVENT_CLASS(f2fs__page,
 		__entry->dirty)
 );
 
+DEFINE_EVENT(f2fs__page, f2fs_writepage,
+
+	TP_PROTO(struct page *page, int type),
+
+	TP_ARGS(page, type)
+);
+
 DEFINE_EVENT(f2fs__page, f2fs_set_page_dirty,
 
 	TP_PROTO(struct page *page, int type),

Signature · 1 line

1.7.9.5