This patch adds a tracepoint for f2fs_read_data_page to trace when page is
readed by user.
Signed-off-by: Chao Yu <chao2.yu@xxxxxxxxxxx>
---
fs/f2fs/data.c | 2 ++
include/trace/events/f2fs.h | 15 +++++++++++++--
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 21bfafa..8c250a5 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -713,6 +713,8 @@ static int f2fs_read_data_page(struct file *file, struct page *page)
struct inode *inode = page->mapping->host;
int ret;
+ trace_f2fs_readpage(page, DATA);
+
/* If the file has inline data, try to read it directlly */
if (f2fs_has_inline_data(inode))
ret = f2fs_read_inline_data(inode, page);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 91b1fcc..b983990 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -732,6 +732,7 @@ DECLARE_EVENT_CLASS(f2fs__page,
__field(int, dir)
__field(pgoff_t, index)
__field(int, dirty)
+ __field(int, uptodate)
),
TP_fast_assign(
@@ -741,14 +742,17 @@ DECLARE_EVENT_CLASS(f2fs__page,
__entry->dir = S_ISDIR(page->mapping->host->i_mode);
__entry->index = page->index;
__entry->dirty = PageDirty(page);
+ __entry->uptodate = PageUptodate(page);
),
- TP_printk("dev = (%d,%d), ino = %lu, %s, %s, index = %lu, dirty = %d",
+ TP_printk("dev = (%d,%d), ino = %lu, %s, %s, index = %lu, "
+ "dirty = %d, uptodate = %d",
show_dev_ino(__entry),
show_block_type(__entry->type),
show_file_type(__entry->dir),
(unsigned long)__entry->index,
- __entry->dirty)
+ __entry->dirty,
+ __entry->uptodate)
);
DEFINE_EVENT(f2fs__page, f2fs_writepage,
@@ -758,6 +762,13 @@ DEFINE_EVENT(f2fs__page, f2fs_writepage,
TP_ARGS(page, type)
);
+DEFINE_EVENT(f2fs__page, f2fs_readpage,
+
+ 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),
--
1.7.9.5
--
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