Btrfs/tracepoint: update delayed ref tracepoints

This shows exactly how btrfs processes the delayed refs onto disks,
which is very helpful on understanding delayed ref mechanism and
debugging related bugs.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index c219463fb1fde9ede3cbe9d53622c8659b1545b0..f7be9f76a12b04c50d2504ebefa258ca31303857 100644 (file)
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -600,7 +600,7 @@ static noinline void add_delayed_ref_head(struct btrfs_fs_info *fs_info,
        INIT_LIST_HEAD(&head_ref->cluster);
        mutex_init(&head_ref->mutex);
 
-       trace_btrfs_delayed_ref_head(ref, head_ref, action);
+       trace_add_delayed_ref_head(ref, head_ref, action);
 
        existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 
@@ -661,7 +661,7 @@ static noinline void add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
                ref->type = BTRFS_TREE_BLOCK_REF_KEY;
        full_ref->level = level;
 
-       trace_btrfs_delayed_tree_ref(ref, full_ref, action);
+       trace_add_delayed_tree_ref(ref, full_ref, action);
 
        existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 
@@ -722,7 +722,7 @@ static noinline void add_delayed_data_ref(struct btrfs_fs_info *fs_info,
        full_ref->objectid = owner;
        full_ref->offset = offset;
 
-       trace_btrfs_delayed_data_ref(ref, full_ref, action);
+       trace_add_delayed_data_ref(ref, full_ref, action);
 
        existing = tree_insert(&delayed_refs->root, &ref->rb_node);
 

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a770a631843359cb10b5515421ed64c55511a1a5..ca02d3c1724c980ce4031026eee91016b9df2b0a 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2035,6 +2035,8 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
        ins.type = BTRFS_EXTENT_ITEM_KEY;
 
        ref = btrfs_delayed_node_to_data_ref(node);
+       trace_run_delayed_data_ref(node, ref, node->action);
+
        if (node->type == BTRFS_SHARED_DATA_REF_KEY)
                parent = ref->parent;
        else
@@ -2178,6 +2180,8 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
                                                 SKINNY_METADATA);
 
        ref = btrfs_delayed_node_to_tree_ref(node);
+       trace_run_delayed_tree_ref(node, ref, node->action);
+
        if (node->type == BTRFS_SHARED_BLOCK_REF_KEY)
                parent = ref->parent;
        else
@@ -2236,6 +2240,8 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans,
                 */
                BUG_ON(extent_op);
                head = btrfs_delayed_node_to_head(node);
+               trace_run_delayed_ref_head(node, head, node->action);
+
                if (insert_reserved) {
                        btrfs_pin_extent(root, node->bytenr,
                                         node->num_bytes, 1);

diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 2902657ba766bb7dc1a9949b1f0436816615484a..45702c3c3837f316709438a462d4a6517e0ba168 100644 (file)
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -439,7 +439,7 @@ TRACE_EVENT(btrfs_sync_fs,
                { BTRFS_UPDATE_DELAYED_HEAD, "UPDATE_DELAYED_HEAD" })
                        
 
-TRACE_EVENT(btrfs_delayed_tree_ref,
+DECLARE_EVENT_CLASS(btrfs_delayed_tree_ref,
 
        TP_PROTO(struct btrfs_delayed_ref_node *ref,
                 struct btrfs_delayed_tree_ref *full_ref,
@@ -481,7 +481,25 @@ TRACE_EVENT(btrfs_delayed_tree_ref,
                  (unsigned long long)__entry->seq)
 );
 
-TRACE_EVENT(btrfs_delayed_data_ref,
+DEFINE_EVENT(btrfs_delayed_tree_ref,  add_delayed_tree_ref,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_tree_ref *full_ref,
+                int action),
+
+       TP_ARGS(ref, full_ref, action)
+);
+
+DEFINE_EVENT(btrfs_delayed_tree_ref,  run_delayed_tree_ref,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_tree_ref *full_ref,
+                int action),
+
+       TP_ARGS(ref, full_ref, action)
+);
+
+DECLARE_EVENT_CLASS(btrfs_delayed_data_ref,
 
        TP_PROTO(struct btrfs_delayed_ref_node *ref,
                 struct btrfs_delayed_data_ref *full_ref,
@@ -527,7 +545,25 @@ TRACE_EVENT(btrfs_delayed_data_ref,
                  (unsigned long long)__entry->seq)
 );
 
-TRACE_EVENT(btrfs_delayed_ref_head,
+DEFINE_EVENT(btrfs_delayed_data_ref,  add_delayed_data_ref,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_data_ref *full_ref,
+                int action),
+
+       TP_ARGS(ref, full_ref, action)
+);
+
+DEFINE_EVENT(btrfs_delayed_data_ref,  run_delayed_data_ref,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_data_ref *full_ref,
+                int action),
+
+       TP_ARGS(ref, full_ref, action)
+);
+
+DECLARE_EVENT_CLASS(btrfs_delayed_ref_head,
 
        TP_PROTO(struct btrfs_delayed_ref_node *ref,
                 struct btrfs_delayed_ref_head *head_ref,
@@ -556,6 +592,24 @@ TRACE_EVENT(btrfs_delayed_ref_head,
                  __entry->is_data)
 );
 
+DEFINE_EVENT(btrfs_delayed_ref_head,  add_delayed_ref_head,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_ref_head *head_ref,
+                int action),
+
+       TP_ARGS(ref, head_ref, action)
+);
+
+DEFINE_EVENT(btrfs_delayed_ref_head,  run_delayed_ref_head,
+
+       TP_PROTO(struct btrfs_delayed_ref_node *ref,
+                struct btrfs_delayed_ref_head *head_ref,
+                int action),
+
+       TP_ARGS(ref, head_ref, action)
+);
+
 #define show_chunk_type(type)                                  \
        __print_flags(type, "|",                                \
                { BTRFS_BLOCK_GROUP_DATA,       "DATA"  },      \