From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Add tracepoints to debug the various page write operation
like data pages, meta pages.
Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Pankaj Kumar <pankaj.km@xxxxxxxxxxx>
---
fs/f2fs/checkpoint.c | 2 ++
fs/f2fs/data.c | 2 ++
include/trace/events/f2fs.h | 62 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 66 insertions(+)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 93fd57d..c0606b1 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -20,6 +20,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
+#include <trace/events/f2fs.h>
static struct kmem_cache *orphan_entry_slab;
static struct kmem_cache *inode_entry_slab;
@@ -75,6 +76,7 @@ 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_write_page(page, META);
/* Should not write any meta pages, if any IO error was occurred */
if (wbc->for_reclaim ||
is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG)) {
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index a517ec2..9ed6500 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -490,6 +490,7 @@ static int f2fs_write_data_page(struct page *page,
unsigned offset;
int err = 0;
+ trace_f2fs_write_page(page, DATA);
if (page->index < end_index)
goto out;
@@ -598,6 +599,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
struct dnode_of_data dn;
int err = 0;
+ trace_f2fs_write_begin(inode, pos, len, flags);
/* for nobh_write_end */
*fsdata = NULL;
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 5665619..858375b 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -423,6 +423,68 @@ TRACE_EVENT(f2fs_reserve_new_block,
__entry->nid)
);
+TRACE_EVENT(f2fs_write_begin,
+
+ TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
+ unsigned int flags),
+
+ TP_ARGS(inode, pos, len, flags),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(loff_t, pos)
+ __field(unsigned int, len)
+ __field(unsigned int, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->pos = pos;
+ __entry->len = len;
+ __entry->flags = flags;
+ ),
+
+ TP_printk("dev %d,%d ino %lu pos %lld len %u flags %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->flags)
+);
+
+DECLARE_EVENT_CLASS(f2fs_page_type_op,
+ TP_PROTO(struct page *page, int type),
+
+ TP_ARGS(page, type),
+
+ TP_STRUCT__entry(
+ __field(pgoff_t, index)
+ __field(int, type)
+ __field(ino_t, ino)
+ __field(dev_t, dev)
+
+ ),
+
+ TP_fast_assign(
+ __entry->index = page->index;
+ __entry->type = type;
+ __entry->ino = page->mapping->host->i_ino;
+ __entry->dev = page->mapping->host->i_sb->s_dev;
+ ),
+
+ TP_printk("dev %d,%d ino %lu page_index %lu type %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ (unsigned long) __entry->index, __entry->type)
+);
+
+DEFINE_EVENT(f2fs_page_type_op, f2fs_write_page,
+
+ TP_PROTO(struct page *page, int type),
+
+ TP_ARGS(page, type)
+);
+
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */
--
1.7.9.5
--
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