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author | Kent Overstreet <koverstreet@google.com> | 2013-04-26 22:39:55 (GMT) |
---|---|---|
committer | Kent Overstreet <koverstreet@google.com> | 2013-06-27 00:09:15 (GMT) |
commit | c37511b863f36c1cc6e18440717fd4cc0e881b8a (patch) | |
tree | 64d82c648bd092f38c35c4b808411bc1cdb3a9f0 /include/trace/events/bcache.h | |
parent | 5794351146199b9ac67a5ab1beab82be8bfd7b5d (diff) | |
download | linux-c37511b863f36c1cc6e18440717fd4cc0e881b8a.tar.xz |
bcache: Fix/revamp tracepoints
The tracepoints were reworked to be more sensible, and fixed a null
pointer deref in one of the tracepoints.
Converted some of the pr_debug()s to tracepoints - this is partly a
performance optimization; it used to be that with DEBUG or
CONFIG_DYNAMIC_DEBUG pr_debug() was an empty macro; but at some point it
was changed to an empty inline function.
Some of the pr_debug() statements had rather expensive function calls as
part of the arguments, so this code was getting run unnecessarily even
on non debug kernels - in some fast paths, too.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
Diffstat (limited to 'include/trace/events/bcache.h')
-rw-r--r-- | include/trace/events/bcache.h | 352 |
1 files changed, 241 insertions, 111 deletions
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h index 3cc5a0b..c9952b3 100644 --- a/include/trace/events/bcache.h +++ b/include/trace/events/bcache.h @@ -9,9 +9,7 @@ struct search; DECLARE_EVENT_CLASS(bcache_request, - TP_PROTO(struct search *s, struct bio *bio), - TP_ARGS(s, bio), TP_STRUCT__entry( @@ -22,7 +20,6 @@ DECLARE_EVENT_CLASS(bcache_request, __field(dev_t, orig_sector ) __field(unsigned int, nr_sector ) __array(char, rwbs, 6 ) - __array(char, comm, TASK_COMM_LEN ) ), TP_fast_assign( @@ -33,36 +30,66 @@ DECLARE_EVENT_CLASS(bcache_request, __entry->orig_sector = bio->bi_sector - 16; __entry->nr_sector = bio->bi_size >> 9; blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size); - memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), - TP_printk("%d,%d %s %llu + %u [%s] (from %d,%d @ %llu)", + TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)", MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->rwbs, - (unsigned long long)__entry->sector, - __entry->nr_sector, __entry->comm, - __entry->orig_major, __entry->orig_minor, + __entry->rwbs, (unsigned long long)__entry->sector, + __entry->nr_sector, __entry->orig_major, __entry->orig_minor, (unsigned long long)__entry->orig_sector) ); -DEFINE_EVENT(bcache_request, bcache_request_start, +DECLARE_EVENT_CLASS(bkey, + TP_PROTO(struct bkey *k), + TP_ARGS(k), - TP_PROTO(struct search *s, struct bio *bio), + TP_STRUCT__entry( + __field(u32, size ) + __field(u32, inode ) + __field(u64, offset ) + __field(bool, dirty ) + ), - TP_ARGS(s, bio) + TP_fast_assign( + __entry->inode = KEY_INODE(k); + __entry->offset = KEY_OFFSET(k); + __entry->size = KEY_SIZE(k); + __entry->dirty = KEY_DIRTY(k); + ), + + TP_printk("%u:%llu len %u dirty %u", __entry->inode, + __entry->offset, __entry->size, __entry->dirty) ); -DEFINE_EVENT(bcache_request, bcache_request_end, +DECLARE_EVENT_CLASS(btree_node, + TP_PROTO(struct btree *b), + TP_ARGS(b), + + TP_STRUCT__entry( + __field(size_t, bucket ) + ), + + TP_fast_assign( + __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0); + ), + TP_printk("bucket %zu", __entry->bucket) +); + +/* request.c */ + +DEFINE_EVENT(bcache_request, bcache_request_start, TP_PROTO(struct search *s, struct bio *bio), + TP_ARGS(s, bio) +); +DEFINE_EVENT(bcache_request, bcache_request_end, + TP_PROTO(struct search *s, struct bio *bio), TP_ARGS(s, bio) ); DECLARE_EVENT_CLASS(bcache_bio, - TP_PROTO(struct bio *bio), - TP_ARGS(bio), TP_STRUCT__entry( @@ -70,7 +97,6 @@ DECLARE_EVENT_CLASS(bcache_bio, __field(sector_t, sector ) __field(unsigned int, nr_sector ) __array(char, rwbs, 6 ) - __array(char, comm, TASK_COMM_LEN ) ), TP_fast_assign( @@ -78,191 +104,295 @@ DECLARE_EVENT_CLASS(bcache_bio, __entry->sector = bio->bi_sector; __entry->nr_sector = bio->bi_size >> 9; blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size); - memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), - TP_printk("%d,%d %s %llu + %u [%s]", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->rwbs, - (unsigned long long)__entry->sector, - __entry->nr_sector, __entry->comm) + TP_printk("%d,%d %s %llu + %u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, + (unsigned long long)__entry->sector, __entry->nr_sector) ); - -DEFINE_EVENT(bcache_bio, bcache_passthrough, - +DEFINE_EVENT(bcache_bio, bcache_bypass_sequential, TP_PROTO(struct bio *bio), - TP_ARGS(bio) ); -DEFINE_EVENT(bcache_bio, bcache_cache_hit, - +DEFINE_EVENT(bcache_bio, bcache_bypass_congested, TP_PROTO(struct bio *bio), - TP_ARGS(bio) ); -DEFINE_EVENT(bcache_bio, bcache_cache_miss, +TRACE_EVENT(bcache_read, + TP_PROTO(struct bio *bio, bool hit, bool bypass), + TP_ARGS(bio, hit, bypass), - TP_PROTO(struct bio *bio), + TP_STRUCT__entry( + __field(dev_t, dev ) + __field(sector_t, sector ) + __field(unsigned int, nr_sector ) + __array(char, rwbs, 6 ) + __field(bool, cache_hit ) + __field(bool, bypass ) + ), - TP_ARGS(bio) + TP_fast_assign( + __entry->dev = bio->bi_bdev->bd_dev; + __entry->sector = bio->bi_sector; + __entry->nr_sector = bio->bi_size >> 9; + blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size); + __entry->cache_hit = hit; + __entry->bypass = bypass; + ), + + TP_printk("%d,%d %s %llu + %u hit %u bypass %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->rwbs, (unsigned long long)__entry->sector, + __entry->nr_sector, __entry->cache_hit, __entry->bypass) ); -DEFINE_EVENT(bcache_bio, bcache_read_retry, +TRACE_EVENT(bcache_write, + TP_PROTO(struct bio *bio, bool writeback, bool bypass), + TP_ARGS(bio, writeback, bypass), - TP_PROTO(struct bio *bio), + TP_STRUCT__entry( + __field(dev_t, dev ) + __field(sector_t, sector ) + __field(unsigned int, nr_sector ) + __array(char, rwbs, 6 ) + __field(bool, writeback ) + __field(bool, bypass ) + ), - TP_ARGS(bio) -); + TP_fast_assign( + __entry->dev = bio->bi_bdev->bd_dev; + __entry->sector = bio->bi_sector; + __entry->nr_sector = bio->bi_size >> 9; + blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size); + __entry->writeback = writeback; + __entry->bypass = bypass; + ), -DEFINE_EVENT(bcache_bio, bcache_writethrough, + TP_printk("%d,%d %s %llu + %u hit %u bypass %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->rwbs, (unsigned long long)__entry->sector, + __entry->nr_sector, __entry->writeback, __entry->bypass) +); +DEFINE_EVENT(bcache_bio, bcache_read_retry, TP_PROTO(struct bio *bio), - TP_ARGS(bio) ); -DEFINE_EVENT(bcache_bio, bcache_writeback, +DEFINE_EVENT(bkey, bcache_cache_insert, + TP_PROTO(struct bkey *k), + TP_ARGS(k) +); - TP_PROTO(struct bio *bio), +/* Journal */ - TP_ARGS(bio) -); +DECLARE_EVENT_CLASS(cache_set, + TP_PROTO(struct cache_set *c), + TP_ARGS(c), -DEFINE_EVENT(bcache_bio, bcache_write_skip, + TP_STRUCT__entry( + __array(char, uuid, 16 ) + ), - TP_PROTO(struct bio *bio), + TP_fast_assign( + memcpy(__entry->uuid, c->sb.set_uuid, 16); + ), - TP_ARGS(bio) + TP_printk("%pU", __entry->uuid) ); -DEFINE_EVENT(bcache_bio, bcache_btree_read, - - TP_PROTO(struct bio *bio), +DEFINE_EVENT(bkey, bcache_journal_replay_key, + TP_PROTO(struct bkey *k), + TP_ARGS(k) +); - TP_ARGS(bio) +DEFINE_EVENT(cache_set, bcache_journal_full, + TP_PROTO(struct cache_set *c), + TP_ARGS(c) ); -DEFINE_EVENT(bcache_bio, bcache_btree_write, +DEFINE_EVENT(cache_set, bcache_journal_entry_full, + TP_PROTO(struct cache_set *c), + TP_ARGS(c) +); +DEFINE_EVENT(bcache_bio, bcache_journal_write, TP_PROTO(struct bio *bio), - TP_ARGS(bio) ); -DEFINE_EVENT(bcache_bio, bcache_write_dirty, +/* Btree */ - TP_PROTO(struct bio *bio), +DEFINE_EVENT(cache_set, bcache_btree_cache_cannibalize, + TP_PROTO(struct cache_set *c), + TP_ARGS(c) +); - TP_ARGS(bio) +DEFINE_EVENT(btree_node, bcache_btree_read, + TP_PROTO(struct btree *b), + TP_ARGS(b) ); -DEFINE_EVENT(bcache_bio, bcache_read_dirty, +TRACE_EVENT(bcache_btree_write, + TP_PROTO(struct btree *b), + TP_ARGS(b), - TP_PROTO(struct bio *bio), + TP_STRUCT__entry( + __field(size_t, bucket ) + __field(unsigned, block ) + __field(unsigned, keys ) + ), - TP_ARGS(bio) + TP_fast_assign( + __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0); + __entry->block = b->written; + __entry->keys = b->sets[b->nsets].data->keys; + ), + + TP_printk("bucket %zu", __entry->bucket) ); -DEFINE_EVENT(bcache_bio, bcache_write_moving, +DEFINE_EVENT(btree_node, bcache_btree_node_alloc, + TP_PROTO(struct btree *b), + TP_ARGS(b) +); - TP_PROTO(struct bio *bio), +DEFINE_EVENT(btree_node, bcache_btree_node_alloc_fail, + TP_PROTO(struct btree *b), + TP_ARGS(b) +); - TP_ARGS(bio) +DEFINE_EVENT(btree_node, bcache_btree_node_free, + TP_PROTO(struct btree *b), + TP_ARGS(b) ); -DEFINE_EVENT(bcache_bio, bcache_read_moving, +TRACE_EVENT(bcache_btree_gc_coalesce, + TP_PROTO(unsigned nodes), + TP_ARGS(nodes), - TP_PROTO(struct bio *bio), + TP_STRUCT__entry( + __field(unsigned, nodes ) + ), - TP_ARGS(bio) -); + TP_fast_assign( + __entry->nodes = nodes; + ), -DEFINE_EVENT(bcache_bio, bcache_journal_write, + TP_printk("coalesced %u nodes", __entry->nodes) +); - TP_PROTO(struct bio *bio), +DEFINE_EVENT(cache_set, bcache_gc_start, + TP_PROTO(struct cache_set *c), + TP_ARGS(c) +); - TP_ARGS(bio) +DEFINE_EVENT(cache_set, bcache_gc_end, + TP_PROTO(struct cache_set *c), + TP_ARGS(c) ); -DECLARE_EVENT_CLASS(bcache_cache_bio, +DEFINE_EVENT(bkey, bcache_gc_copy, + TP_PROTO(struct bkey *k), + TP_ARGS(k) +); - TP_PROTO(struct bio *bio, - sector_t orig_sector, - struct block_device* orig_bdev), +DEFINE_EVENT(bkey, bcache_gc_copy_collision, + TP_PROTO(struct bkey *k), + TP_ARGS(k) +); - TP_ARGS(bio, orig_sector, orig_bdev), +DECLARE_EVENT_CLASS(btree_split, + TP_PROTO(struct btree *b, unsigned keys), + TP_ARGS(b, keys), TP_STRUCT__entry( - __field(dev_t, dev ) - __field(dev_t, orig_dev ) - __field(sector_t, sector ) - __field(sector_t, orig_sector ) - __field(unsigned int, nr_sector ) - __array(char, rwbs, 6 ) - __array(char, comm, TASK_COMM_LEN ) + __field(size_t, bucket ) + __field(unsigned, keys ) ), TP_fast_assign( - __entry->dev = bio->bi_bdev->bd_dev; - __entry->orig_dev = orig_bdev->bd_dev; - __entry->sector = bio->bi_sector; - __entry->orig_sector = orig_sector; - __entry->nr_sector = bio->bi_size >> 9; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size); - memcpy(__entry->comm, current->comm, TASK_COMM_LEN); + __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0); + __entry->keys = keys; ), - TP_printk("%d,%d %s %llu + %u [%s] (from %d,%d %llu)", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->rwbs, - (unsigned long long)__entry->sector, - __entry->nr_sector, __entry->comm, - MAJOR(__entry->orig_dev), MINOR(__entry->orig_dev), - (unsigned long long)__entry->orig_sector) + TP_printk("bucket %zu keys %u", __entry->bucket, __entry->keys) ); -DEFINE_EVENT(bcache_cache_bio, bcache_cache_insert, - - TP_PROTO(struct bio *bio, - sector_t orig_sector, - struct block_device *orig_bdev), +DEFINE_EVENT(btree_split, bcache_btree_node_split, + TP_PROTO(struct btree *b, unsigned keys), + TP_ARGS(b, keys) +); - TP_ARGS(bio, orig_sector, orig_bdev) +DEFINE_EVENT(btree_split, bcache_btree_node_compact, + TP_PROTO(struct btree *b, unsigned keys), + TP_ARGS(b, keys) ); -DECLARE_EVENT_CLASS(bcache_gc, +DEFINE_EVENT(btree_node, bcache_btree_set_root, + TP_PROTO(struct btree *b), + TP_ARGS(b) +); - TP_PROTO(uint8_t *uuid), +/* Allocator */ - TP_ARGS(uuid), +TRACE_EVENT(bcache_alloc_invalidate, + TP_PROTO(struct cache *ca), + TP_ARGS(ca), TP_STRUCT__entry( - __field(uint8_t *, uuid) + __field(unsigned, free ) + __field(unsigned, free_inc ) + __field(unsigned, free_inc_size ) + __field(unsigned, unused ) ), TP_fast_assign( - __entry->uuid = uuid; + __entry->free = fifo_used(&ca->free); + __entry->free_inc = fifo_used(&ca->free_inc); + __entry->free_inc_size = ca->free_inc.size; + __entry->unused = fifo_used(&ca->unused); ), - TP_printk("%pU", __entry->uuid) + TP_printk("free %u free_inc %u/%u unused %u", __entry->free, + __entry->free_inc, __entry->free_inc_size, __entry->unused) ); +TRACE_EVENT(bcache_alloc_fail, + TP_PROTO(struct cache *ca), + TP_ARGS(ca), -DEFINE_EVENT(bcache_gc, bcache_gc_start, + TP_STRUCT__entry( + __field(unsigned, free ) + __field(unsigned, free_inc ) + __field(unsigned, unused ) + __field(unsigned, blocked ) + ), - TP_PROTO(uint8_t *uuid), + TP_fast_assign( + __entry->free = fifo_used(&ca->free); + __entry->free_inc = fifo_used(&ca->free_inc); + __entry->unused = fifo_used(&ca->unused); + __entry->blocked = atomic_read(&ca->set->prio_blocked); + ), - TP_ARGS(uuid) + TP_printk("free %u free_inc %u unused %u blocked %u", __entry->free, + __entry->free_inc, __entry->unused, __entry->blocked) ); -DEFINE_EVENT(bcache_gc, bcache_gc_end, +/* Background writeback */ - TP_PROTO(uint8_t *uuid), +DEFINE_EVENT(bkey, bcache_writeback, + TP_PROTO(struct bkey *k), + TP_ARGS(k) +); - TP_ARGS(uuid) +DEFINE_EVENT(bkey, bcache_writeback_collision, + TP_PROTO(struct bkey *k), + TP_ARGS(k) ); #endif /* _TRACE_BCACHE_H */ |