'inode' is an important field for btrfs_get_extent, lets trace it.
Signed-off-by: Liu Bo <bo.li....@oracle.com>
---
v2: add 'unsigned long long' for consistence.
fs/btrfs/inode.c | 2 +-
include/trace/events/btrfs.h | 12 ++++++++----
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8e3a5a2..1cdd23c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7081,7 +7081,7 @@ struct extent_map *btrfs_get_extent(struct inode *inode,
struct page *page,
write_unlock(&em_tree->lock);
out:
- trace_btrfs_get_extent(root, em);
+ trace_btrfs_get_extent(root, inode, em);
btrfs_free_path(path);
if (trans) {
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index e030d6f..ef80740 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -184,14 +184,16 @@ DEFINE_EVENT(btrfs__inode, btrfs_inode_evict,
TRACE_EVENT_CONDITION(btrfs_get_extent,
- TP_PROTO(struct btrfs_root *root, struct extent_map *map),
+ TP_PROTO(struct btrfs_root *root, struct inode *inode,
+ struct extent_map *map),
- TP_ARGS(root, map),
+ TP_ARGS(root, inode, map),
TP_CONDITION(map),
TP_STRUCT__entry_btrfs(
__field( u64, root_objectid )
+ __field( u64, ino )
__field( u64, start )
__field( u64, len )
__field( u64, orig_start )
@@ -204,7 +206,8 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
TP_fast_assign_btrfs(root->fs_info,
__entry->root_objectid = root->root_key.objectid;
- __entry->start = map->start;
+ __entry->ino = btrfs_ino(inode);
+ __entry->start = map->start;
__entry->len = map->len;
__entry->orig_start = map->orig_start;
__entry->block_start = map->block_start;
@@ -214,11 +217,12 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
__entry->compress_type = map->compress_type;
),
- TP_printk_btrfs("root = %llu(%s), start = %llu, len = %llu, "
+ TP_printk_btrfs("root = %llu(%s), ino = %llu start = %llu, len = %llu, "
"orig_start = %llu, block_start = %llu(%s), "
"block_len = %llu, flags = %s, refs = %u, "
"compress_type = %u",
show_root_type(__entry->root_objectid),
+ (unsigned long long)__entry->ino,
(unsigned long long)__entry->start,
(unsigned long long)__entry->len,
(unsigned long long)__entry->orig_start,
--
2.5.5
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