diff options
| author |   Guoju Fang <fangguoju@gmail.com> | 2018-12-13 22:53:57 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-12-13 08:15:54 -0700 |
| commit | e78bd0d26f7396c7bd17be60d9686be8ef8e453a (patch) | |
| tree | 0a20744ad966b2b90f4db19cb09b64b5fbcbc467 /include/trace | |
| parent | bcache: set writeback_percent in a flexible range (diff) | |
| download | linux-dev-e78bd0d26f7396c7bd17be60d9686be8ef8e453a.tar.xz linux-dev-e78bd0d26f7396c7bd17be60d9686be8ef8e453a.zip | |
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.h | 27 |
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 */ |