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| author | Qu Wenruo <wqu@suse.com> | 2018-04-26 17:17:20 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-05-28 18:07:28 +0200 |
| commit | 4ed0a7a3b7c3f8387caf2ad57424d9341f523856 (patch) | |
| tree | c1264084da9a58e813cb2a6b9e3df6e5a8776a45 /include/trace | |
| parent | 3dca5c942dac60164e6a6e89172f25b86af07ce7 (diff) | |
| download | lwn-4ed0a7a3b7c3f8387caf2ad57424d9341f523856.tar.gz lwn-4ed0a7a3b7c3f8387caf2ad57424d9341f523856.zip | |
btrfs: trace: Add trace points for unused block groups
This patch will add the following trace events:
1) btrfs_remove_block_group
For btrfs_remove_block_group() function.
Triggered when a block group is really removed.
2) btrfs_add_unused_block_group
Triggered which block group is added to unused_bgs list.
3) btrfs_skip_unused_block_group
Triggered which unused block group is not deleted.
These trace events is pretty handy to debug case related to block group
auto remove.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/btrfs.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 5af2479e9b16..914ddb7a6d25 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -1805,6 +1805,48 @@ TRACE_EVENT(btrfs_inode_mod_outstanding_extents, __entry->ino, __entry->mod) ); +DECLARE_EVENT_CLASS(btrfs__block_group, + TP_PROTO(const struct btrfs_block_group_cache *bg_cache), + + TP_ARGS(bg_cache), + + TP_STRUCT__entry_btrfs( + __field( u64, bytenr ) + __field( u64, len ) + __field( u64, used ) + __field( u64, flags ) + ), + + TP_fast_assign_btrfs(bg_cache->fs_info, + __entry->bytenr = bg_cache->key.objectid, + __entry->len = bg_cache->key.offset, + __entry->used = btrfs_block_group_used(&bg_cache->item); + __entry->flags = bg_cache->flags; + ), + + TP_printk_btrfs("bg bytenr=%llu len=%llu used=%llu flags=%llu(%s)", + __entry->bytenr, __entry->len, __entry->used, __entry->flags, + __print_flags(__entry->flags, "|", BTRFS_GROUP_FLAGS)) +); + +DEFINE_EVENT(btrfs__block_group, btrfs_remove_block_group, + TP_PROTO(const struct btrfs_block_group_cache *bg_cache), + + TP_ARGS(bg_cache) +); + +DEFINE_EVENT(btrfs__block_group, btrfs_add_unused_block_group, + TP_PROTO(const struct btrfs_block_group_cache *bg_cache), + + TP_ARGS(bg_cache) +); + +DEFINE_EVENT(btrfs__block_group, btrfs_skip_unused_block_group, + TP_PROTO(const struct btrfs_block_group_cache *bg_cache), + + TP_ARGS(bg_cache) +); + #endif /* _TRACE_BTRFS_H */ /* This part must be outside protection */ |