[RFC 5/5] f2fs: add tracepoints to debug inline data operations

[Huajun Li <huajun.li@xxxxxxxxx>]

From: Haicheng Li <haicheng.li@xxxxxxxxxxxxxxx>

Add tracepoints for: f2fs_read_inline_data(), f2fs_convert_inline_data(),
f2fs_write_inline_data().

Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Haicheng Li <haicheng.li@xxxxxxxxxxxxxxx>
Signed-off-by: Huajun Li <huajun.li@xxxxxxxxx>
---
 fs/f2fs/inline.c            |    4 +++
 include/trace/events/f2fs.h |   69 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index a2aa056..9ec66e5 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -14,6 +14,7 @@
 #include <linux/f2fs_fs.h>
 
 #include "f2fs.h"
+#include <trace/events/f2fs.h>
 
 void f2fs_clear_inode_inline_flag(struct f2fs_inode *raw_inode)
 {
@@ -44,6 +45,7 @@ static int f2fs_read_inline_data(struct inode *inode, struct page *page)
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
+	trace_f2fs_read_inline_data(inode, page);
 	src_addr = page_address(ipage);
 	dst_addr = page_address(page);
 
@@ -107,6 +109,7 @@ int f2fs_convert_inline_data(struct page *p,
 	set_page_dirty(ipage);
 	f2fs_put_page(ipage, 1);
 
+	trace_f2fs_convert_inline_data(inode, page);
 	if (!p->index) {
 		SetPageUptodate(page);
 	} else {
@@ -138,6 +141,7 @@ int f2fs_write_inline_data(struct inode *inode,
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
+	trace_f2fs_write_inline_data(inode, page);
 	src_addr = page_address(page);
 	dst_addr = page_address(ipage);
 
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 52ae548..bc7a84e 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -676,6 +676,75 @@ TRACE_EVENT(f2fs_write_checkpoint,
 		__entry->msg)
 );
 
+TRACE_EVENT(f2fs_read_inline_data,
+
+	TP_PROTO(struct inode *inode, struct page *page),
+
+	TP_ARGS(inode, page),
+
+	TP_STRUCT__entry(
+		__field(dev_t,	dev)
+		__field(ino_t,	ino)
+		__field(pgoff_t, index)
+	),
+
+	TP_fast_assign(
+		__entry->dev	= inode->i_sb->s_dev;
+		__entry->ino	= inode->i_ino;
+		__entry->index	= page->index;
+	),
+
+	TP_printk("dev = (%d,%d), ino = %lu, index = %lu",
+		show_dev_ino(__entry),
+		(unsigned long)__entry->index)
+);
+
+TRACE_EVENT(f2fs_convert_inline_data,
+
+	TP_PROTO(struct inode *inode, struct page *page),
+
+	TP_ARGS(inode, page),
+
+	TP_STRUCT__entry(
+		__field(dev_t,	dev)
+		__field(ino_t,	ino)
+		__field(pgoff_t, index)
+	),
+
+	TP_fast_assign(
+		__entry->dev	= inode->i_sb->s_dev;
+		__entry->ino	= inode->i_ino;
+		__entry->index	= page->index;
+	),
+
+	TP_printk("dev = (%d,%d), ino = %lu, index = %lu",
+		show_dev_ino(__entry),
+		(unsigned long)__entry->index)
+);
+
+TRACE_EVENT(f2fs_write_inline_data,
+
+	TP_PROTO(struct inode *inode, struct page *page),
+
+	TP_ARGS(inode, page),
+
+	TP_STRUCT__entry(
+		__field(dev_t,	dev)
+		__field(ino_t,	ino)
+		__field(pgoff_t, index)
+	),
+
+	TP_fast_assign(
+		__entry->dev	= inode->i_sb->s_dev;
+		__entry->ino	= inode->i_ino;
+		__entry->index	= page->index;
+	),
+
+	TP_printk("dev = (%d,%d), ino = %lu, index = %lu",
+		show_dev_ino(__entry),
+		(unsigned long)__entry->index)
+);
+
 #endif /* _TRACE_F2FS_H */
 
  /* This part must be outside protection */
-- 
1.7.9.5

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