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btrfs: tracepoints: fix extent type symbolic name print

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extent's type is an enum and this requires that the enum values be
exported to user space so that user space tools can correctly map raw
binary data to the symbolic name. Currently tracepoints using
btrfs__file_extent_item_regular or btrfs__file_extent_item_inline result
in the following output:

fio-443   [002]   586.609450: btrfs_get_extent_show_fi_regular: f0c3bf8e-0174-4bcc-92aa-6c2d62430420:i
	root=5(FS_TREE) inode=258 size=2136457216 disk_isize=0
	file extent range=[2126946304 2136457216] (num_bytes=9510912
	ram_bytes=9510912 disk_bytenr=0 disk_num_bytes=0 extent_offset=0
	type=0x1 compression=0

E.g type is 0x1 . With this patch applie the output is:

<ommitted for brevity>  disk_bytenr=141348864 disk_num_bytes=4096 extent_offset=0 type=REG compression=0

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2020-06-19 15:24:47 +03:00 committed by David Sterba
parent 45e31869cc
commit 0840dd28b5
1 changed files with 18 additions and 7 deletions
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25
include/trace/events/btrfs.h
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@ -67,11 +67,22 @@ TRACE_DEFINE_ENUM(COMMIT_TRANS);
(obj >= BTRFS_ROOT_TREE_OBJECTID && \
obj <= BTRFS_QUOTA_TREE_OBJECTID)) ? __show_root_type(obj) : "-"
#define show_fi_type(type) \
__print_symbolic(type, \
{ BTRFS_FILE_EXTENT_INLINE, "INLINE" }, \
{ BTRFS_FILE_EXTENT_REG, "REG" }, \
{ BTRFS_FILE_EXTENT_PREALLOC, "PREALLOC"})
#define FI_TYPES \
EM( BTRFS_FILE_EXTENT_INLINE, "INLINE") \
EM( BTRFS_FILE_EXTENT_REG, "REG") \
EMe(BTRFS_FILE_EXTENT_PREALLOC, "PREALLOC")
#undef EM
#undef EMe
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define EMe(a, b) TRACE_DEFINE_ENUM(a);
FI_TYPES
#undef EM
#undef EMe
#define EM(a, b) {a, b},
#define EMe(a, b) {a, b}
#define show_qgroup_rsv_type(type) \
__print_symbolic(type, \
@ -380,7 +391,7 @@ DECLARE_EVENT_CLASS(btrfs__file_extent_item_regular,
__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->extent_offset, __print_symbolic(__entry->extent_type, FI_TYPES),
__entry->compression)
);
@ -421,7 +432,7 @@ DECLARE_EVENT_CLASS(
"extent_type=%s compression=%u",
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->extent_end, __print_symbolic(__entry->extent_type, FI_TYPES),
__entry->compression)
);