[PATCH 03/10] f2fs: add submit_bio tracepoint

[Jaegeuk Kim]

This patch adds final submit_bio() tracepoint.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/data.c              |  1 +
 include/trace/events/f2fs.h | 31 +++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 2c5df1dc1479..54da4e2f1318 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -175,6 +175,7 @@ static inline void __submit_bio(struct f2fs_sb_info *sbi,
                        current->plug && (type == DATA || type == NODE))
                        blk_finish_plug(current->plug);
        }
+       trace_f2fs_submit_bio(sbi->sb, bio);
        submit_bio(bio);
 }
 
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 4c942599581b..094d92b52450 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -55,6 +55,8 @@ TRACE_DEFINE_ENUM(CP_DISCARD);
                { IPU,          "IN-PLACE" },                           \
                { OPU,          "OUT-OF-PLACE" })
 
+#define F2FS_OP        (REQ_OP_READ | REQ_OP_RAHEAD | REQ_SYNC | REQ_PREFLUSH 
| REQ_META |\
+                       REQ_PRIO)
 #define F2FS_OP_FLAGS (REQ_RAHEAD | REQ_SYNC | REQ_PREFLUSH | REQ_META |\
                        REQ_PRIO)
 #define F2FS_BIO_FLAG_MASK(t)  (t & F2FS_OP_FLAGS)
@@ -837,6 +839,35 @@ DEFINE_EVENT_CONDITION(f2fs__submit_bio, 
f2fs_submit_read_bio,
        TP_CONDITION(bio)
 );
 
+TRACE_EVENT(f2fs_submit_bio,
+
+       TP_PROTO(struct super_block *sb, struct bio *bio),
+
+       TP_ARGS(sb, bio),
+
+       TP_STRUCT__entry(
+               __field(dev_t,  dev)
+               __field(int,    op)
+               __field(int,    op_flags)
+               __field(sector_t,       sector)
+               __field(unsigned int,   size)
+       ),
+
+       TP_fast_assign(
+               __entry->dev            = sb->s_dev;
+               __entry->op             = bio->bi_opf & REQ_OP_MASK;
+               __entry->op_flags       = bio->bi_opf;
+               __entry->sector         = bio->bi_iter.bi_sector;
+               __entry->size           = bio->bi_iter.bi_size;
+       ),
+
+       TP_printk("dev = (%d,%d), rw = %s%s, sector = %lld, size = %u",
+               show_dev(__entry),
+               show_bio_type(__entry->op, __entry->op_flags),
+               (unsigned long long)__entry->sector,
+               __entry->size)
+);
+
 TRACE_EVENT(f2fs_write_begin,
 
        TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
-- 
2.11.0