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authorGuoju Fang <fangguoju@gmail.com>2018-12-13 22:53:57 +0800
committerJens Axboe <axboe@kernel.dk>2018-12-13 08:15:54 -0700
commite78bd0d26f7396c7bd17be60d9686be8ef8e453a (patch)
tree0a20744ad966b2b90f4db19cb09b64b5fbcbc467 /include/trace
parentcc38ca7ed54a1df04ae9f23614b348ebfc918029 (diff)
bcache: print number of keys in trace_bcache_journal_write
Sometimes flush journal may be very frequent, so it's useful to dump number of keys every time write journal. Signed-off-by: Guoju Fang <fangguoju@gmail.com> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/bcache.h27
1 files changed, 24 insertions, 3 deletions
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h
index 2cbd6e42ad83..e4526f85c19d 100644
--- a/include/trace/events/bcache.h
+++ b/include/trace/events/bcache.h
@@ -221,9 +221,30 @@ DEFINE_EVENT(cache_set, bcache_journal_entry_full,
TP_ARGS(c)
);
-DEFINE_EVENT(bcache_bio, bcache_journal_write,
- TP_PROTO(struct bio *bio),
- TP_ARGS(bio)
+TRACE_EVENT(bcache_journal_write,
+ TP_PROTO(struct bio *bio, u32 keys),
+ TP_ARGS(bio, keys),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev )
+ __field(sector_t, sector )
+ __field(unsigned int, nr_sector )
+ __array(char, rwbs, 6 )
+ __field(u32, nr_keys )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio_dev(bio);
+ __entry->sector = bio->bi_iter.bi_sector;
+ __entry->nr_sector = bio->bi_iter.bi_size >> 9;
+ __entry->nr_keys = keys;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u keys %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector, __entry->nr_sector,
+ __entry->nr_keys)
);
/* Btree */