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bcache: bcache_write tracepoint was crashing 

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Slava Pestov 2014-05-22 12:14:24 -07:00 committed by Kent Overstreet
parent 8e09480806
commit 60ae81eee8
2 changed files with 11 additions and 7 deletions
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3
drivers/md/bcache/request.c
View File

@ -311,7 +311,8 @@ void bch_data_insert(struct closure *cl)
{ {
struct data_insert_op *op = container_of(cl, struct data_insert_op, cl); struct data_insert_op *op = container_of(cl, struct data_insert_op, cl);
trace_bcache_write(op->bio, op->writeback, op->bypass); trace_bcache_write(op->c, op->inode, op->bio,
op->writeback, op->bypass);
bch_keylist_init(&op->insert_keys); bch_keylist_init(&op->insert_keys);
bio_get(op->bio); bio_get(op->bio);

15
include/trace/events/bcache.h
View File

@ -148,11 +148,13 @@ TRACE_EVENT(bcache_read,
); );
TRACE_EVENT(bcache_write, TRACE_EVENT(bcache_write,
TP_PROTO(struct bio *bio, bool writeback, bool bypass), TP_PROTO(struct cache_set *c, u64 inode, struct bio *bio,
TP_ARGS(bio, writeback, bypass), bool writeback, bool bypass),
TP_ARGS(c, inode, bio, writeback, bypass),
TP_STRUCT__entry( TP_STRUCT__entry(
__field(dev_t, dev ) __array(char, uuid, 16 )
__field(u64, inode )
__field(sector_t, sector ) __field(sector_t, sector )
__field(unsigned int, nr_sector ) __field(unsigned int, nr_sector )
__array(char, rwbs, 6 ) __array(char, rwbs, 6 )
@ -161,7 +163,8 @@ TRACE_EVENT(bcache_write,
), ),
TP_fast_assign( TP_fast_assign(
__entry->dev = bio->bi_bdev->bd_dev; memcpy(__entry->uuid, c->sb.set_uuid, 16);
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector; __entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9; __entry->nr_sector = bio->bi_iter.bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
@ -169,8 +172,8 @@ TRACE_EVENT(bcache_write,
__entry->bypass = bypass; __entry->bypass = bypass;
), ),
TP_printk("%d,%d %s %llu + %u hit %u bypass %u", TP_printk("%pU inode %llu %s %llu + %u hit %u bypass %u",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->uuid, __entry->inode,
__entry->rwbs, (unsigned long long)__entry->sector, __entry->rwbs, (unsigned long long)__entry->sector,
__entry->nr_sector, __entry->writeback, __entry->bypass) __entry->nr_sector, __entry->writeback, __entry->bypass)
); );