From e78bd0d26f7396c7bd17be60d9686be8ef8e453a Mon Sep 17 00:00:00 2001 From: Guoju Fang Date: Thu, 13 Dec 2018 22:53:57 +0800 Subject: 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 Signed-off-by: Coly Li Signed-off-by: Jens Axboe --- include/trace/events/bcache.h | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) (limited to 'include/trace') 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 */ -- cgit v1.2.3-59-g8ed1b