This patch adds a tracepoint for f2fs_submit_read_bio.
Signed-off-by: Chao Yu <chao2.yu@xxxxxxxxxxx>
---
fs/f2fs/data.c | 2 ++
include/trace/events/f2fs.h | 27 +++++++++++++++++++++++++++
2 files changed, 29 insertions(+)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 0ca93be..c9e9d79 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -407,6 +407,8 @@ void f2fs_submit_read_bio(struct f2fs_sb_info *sbi, int rw)
if (!io->bio)
return;
+ trace_f2fs_submit_read_bio(sbi->sb, rw, io->bio);
+
mutex_lock(&io->io_mutex);
if (io->bio) {
submit_bio(rw, io->bio);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 571f39a..ac970e3 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -453,6 +453,33 @@ TRACE_EVENT_CONDITION(f2fs_readpage,
show_bio_type(__entry->type))
);
+TRACE_EVENT(f2fs_submit_read_bio,
+
+ TP_PROTO(struct super_block *sb, int rw, struct bio *bio),
+
+ TP_ARGS(sb, rw, bio),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(int, rw)
+ __field(sector_t, sector)
+ __field(unsigned int, size)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = sb->s_dev;
+ __entry->rw = rw;
+ __entry->sector = bio->bi_sector;
+ __entry->size = bio->bi_size;
+ ),
+
+ TP_printk("dev = (%d,%d), bio_type = %s, sector = %lld, size = %u",
+ show_dev(__entry),
+ show_bio_type(__entry->rw),
+ (unsigned long long)__entry->sector,
+ __entry->size)
+);
+
TRACE_EVENT(f2fs_submit_read_page,
TP_PROTO(struct page *page, block_t blk_addr, int rw),
--
1.7.9.5
--
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