diff options
| -rw-r--r-- | fs/btrfs/locking.c | 10 | ||||
| -rw-r--r-- | include/trace/events/btrfs.h | 42 |
2 files changed, 52 insertions, 0 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c index 67b77f1d113e..2f6c3c7851ed 100644 --- a/fs/btrfs/locking.c +++ b/fs/btrfs/locking.c @@ -87,6 +87,7 @@ static void btrfs_assert_tree_write_locks_put(struct extent_buffer *eb) { } void btrfs_set_lock_blocking_read(struct extent_buffer *eb) { + trace_btrfs_set_lock_blocking_read(eb); /* * No lock is required. The lock owner may change if we have a read * lock, but it won't change to or away from us. If we have the write @@ -102,6 +103,7 @@ void btrfs_set_lock_blocking_read(struct extent_buffer *eb) void btrfs_set_lock_blocking_write(struct extent_buffer *eb) { + trace_btrfs_set_lock_blocking_write(eb); /* * No lock is required. The lock owner may change if we have a read * lock, but it won't change to or away from us. If we have the write @@ -119,6 +121,7 @@ void btrfs_set_lock_blocking_write(struct extent_buffer *eb) void btrfs_clear_lock_blocking_read(struct extent_buffer *eb) { + trace_btrfs_clear_lock_blocking_read(eb); /* * No lock is required. The lock owner may change if we have a read * lock, but it won't change to or away from us. If we have the write @@ -136,6 +139,7 @@ void btrfs_clear_lock_blocking_read(struct extent_buffer *eb) void btrfs_clear_lock_blocking_write(struct extent_buffer *eb) { + trace_btrfs_clear_lock_blocking_write(eb); /* * no lock is required. The lock owner may change if * we have a read lock, but it won't change to or away @@ -209,6 +213,7 @@ int btrfs_tree_read_lock_atomic(struct extent_buffer *eb) } btrfs_assert_tree_read_locks_get(eb); btrfs_assert_spinning_readers_get(eb); + trace_btrfs_tree_read_lock_atomic(eb); return 1; } @@ -230,6 +235,7 @@ int btrfs_try_tree_read_lock(struct extent_buffer *eb) } btrfs_assert_tree_read_locks_get(eb); btrfs_assert_spinning_readers_get(eb); + trace_btrfs_try_tree_read_lock(eb); return 1; } @@ -252,6 +258,7 @@ int btrfs_try_tree_write_lock(struct extent_buffer *eb) btrfs_assert_tree_write_locks_get(eb); btrfs_assert_spinning_writers_get(eb); eb->lock_owner = current->pid; + trace_btrfs_try_tree_write_lock(eb); return 1; } @@ -260,6 +267,7 @@ int btrfs_try_tree_write_lock(struct extent_buffer *eb) */ void btrfs_tree_read_unlock(struct extent_buffer *eb) { + trace_btrfs_tree_read_unlock(eb); /* * if we're nested, we have the write lock. No new locking * is needed as long as we are the lock owner. @@ -281,6 +289,7 @@ void btrfs_tree_read_unlock(struct extent_buffer *eb) */ void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb) { + trace_btrfs_tree_read_unlock_blocking(eb); /* * if we're nested, we have the write lock. No new locking * is needed as long as we are the lock owner. @@ -336,6 +345,7 @@ void btrfs_tree_unlock(struct extent_buffer *eb) BUG_ON(blockers > 1); btrfs_assert_tree_locked(eb); + trace_btrfs_tree_unlock(eb); eb->lock_owner = 0; btrfs_assert_tree_write_locks_put(eb); diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index e27ed5afb958..fe4d268028ee 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -2049,6 +2049,48 @@ DEFINE_EVENT(btrfs_sleep_tree_lock, btrfs_tree_lock, TP_ARGS(eb, start_ns) ); +DECLARE_EVENT_CLASS(btrfs_locking_events, + TP_PROTO(const struct extent_buffer *eb), + + TP_ARGS(eb), + + TP_STRUCT__entry_btrfs( + __field( u64, block ) + __field( u64, generation ) + __field( u64, owner ) + __field( int, is_log_tree ) + ), + + TP_fast_assign_btrfs(eb->fs_info, + __entry->block = eb->start; + __entry->generation = btrfs_header_generation(eb); + __entry->owner = btrfs_header_owner(eb); + __entry->is_log_tree = (eb->log_index >= 0); + ), + + TP_printk_btrfs("block=%llu generation=%llu owner=%llu is_log_tree=%d", + __entry->block, __entry->generation, + __entry->owner, __entry->is_log_tree) +); + +#define DEFINE_BTRFS_LOCK_EVENT(name) \ +DEFINE_EVENT(btrfs_locking_events, name, \ + TP_PROTO(const struct extent_buffer *eb), \ + \ + TP_ARGS(eb) \ +) + +DEFINE_BTRFS_LOCK_EVENT(btrfs_tree_unlock); +DEFINE_BTRFS_LOCK_EVENT(btrfs_tree_read_unlock); +DEFINE_BTRFS_LOCK_EVENT(btrfs_tree_read_unlock_blocking); +DEFINE_BTRFS_LOCK_EVENT(btrfs_set_lock_blocking_read); +DEFINE_BTRFS_LOCK_EVENT(btrfs_set_lock_blocking_write); +DEFINE_BTRFS_LOCK_EVENT(btrfs_clear_lock_blocking_read); +DEFINE_BTRFS_LOCK_EVENT(btrfs_clear_lock_blocking_write); +DEFINE_BTRFS_LOCK_EVENT(btrfs_try_tree_read_lock); +DEFINE_BTRFS_LOCK_EVENT(btrfs_try_tree_write_lock); +DEFINE_BTRFS_LOCK_EVENT(btrfs_tree_read_lock_atomic); + #endif /* _TRACE_BTRFS_H */ /* This part must be outside protection */ |