So with this now we see the compression type in string.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 include/trace/events/btrfs.h | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index c4e4b9427b81..d412c49f5a6a 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -190,6 +190,12 @@ DEFINE_EVENT(btrfs__inode, btrfs_inode_evict,
                { (1 << EXTENT_FLAG_FILLING),           "FILLING"       },\
                { (1 << EXTENT_FLAG_FS_MAPPING),        "FS_MAPPING"    })
 
+#define show_compress_type(type)                \
+       __print_symbolic(type,                   \
+               { BTRFS_COMPRESS_NONE,  "none" },\
+               { BTRFS_COMPRESS_ZLIB,  "zlib" },\
+               { BTRFS_COMPRESS_LZO,   "lzo" })
+
 TRACE_EVENT_CONDITION(btrfs_get_extent,
 
        TP_PROTO(struct btrfs_root *root, struct btrfs_inode *inode,
@@ -228,7 +234,7 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
        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",
+                 "compress_type=%s",
                  show_root_type(__entry->root_objectid),
                  (unsigned long long)__entry->ino,
                  (unsigned long long)__entry->start,
@@ -236,8 +242,8 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
                  (unsigned long long)__entry->orig_start,
                  show_map_type(__entry->block_start),
                  (unsigned long long)__entry->block_len,
-                 show_map_flags(__entry->flags),
-                 __entry->refs, __entry->compress_type)
+                 show_map_flags(__entry->flags), __entry->refs,
+                 show_compress_type(__entry->compress_type))
 );
 
 /* file extent item */
@@ -285,14 +291,14 @@ DECLARE_EVENT_CLASS(btrfs__file_extent_item_regular,
                "file extent range=[%llu %llu] "
                "(num_bytes=%llu ram_bytes=%llu disk_bytenr=%llu "
                "disk_num_bytes=%llu extent_offset=%llu type=%s "
-               "compression=%u",
+               "compression=%s",
                show_root_type(__entry->root_obj), __entry->ino,
                __entry->isize,
                __entry->disk_isize, __entry->extent_start,
                __entry->extent_end, __entry->num_bytes, __entry->ram_bytes,
                __entry->disk_bytenr, __entry->disk_num_bytes,
                __entry->extent_offset, show_fi_type(__entry->extent_type),
-               __entry->compression)
+               show_compress_type(__entry->compression))
 );
 
 DECLARE_EVENT_CLASS(
@@ -329,11 +335,11 @@ DECLARE_EVENT_CLASS(
        TP_printk_btrfs(
                "root=%llu(%s) inode=%llu size=%llu disk_isize=%llu "
                "file extent range=[%llu %llu] "
-               "extent_type=%s compression=%u",
+               "extent_type=%s compression=%s",
                show_root_type(__entry->root_obj), __entry->ino, __entry->isize,
                __entry->disk_isize, __entry->extent_start,
                __entry->extent_end, show_fi_type(__entry->extent_type),
-               __entry->compression)
+               show_compress_type(__entry->compression))
 );
 
 DEFINE_EVENT(
@@ -424,7 +430,7 @@ DECLARE_EVENT_CLASS(btrfs__ordered_extent,
        TP_printk_btrfs("root=%llu(%s) ino=%llu file_offset=%llu "
                  "start=%llu len=%llu disk_len=%llu "
                  "truncated_len=%llu "
-                 "bytes_left=%llu flags=%s compress_type=%d "
+                 "bytes_left=%llu flags=%s compress_type=%s "
                  "refs=%d",
                  show_root_type(__entry->root_objectid),
                  (unsigned long long)__entry->ino,
@@ -435,7 +441,8 @@ DECLARE_EVENT_CLASS(btrfs__ordered_extent,
                  (unsigned long long)__entry->truncated_len,
                  (unsigned long long)__entry->bytes_left,
                  show_ordered_flags(__entry->flags),
-                 __entry->compress_type, __entry->refs)
+                 show_compress_type(__entry->compress_type),
+                 __entry->refs)
 );
 
 DEFINE_EVENT(btrfs__ordered_extent, btrfs_ordered_extent_add,
-- 
2.13.1

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