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btrfs: qgroup: Add trace point for qgroup reserved space

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Introduce the following trace points:
qgroup_update_reserve
qgroup_meta_reserve

These trace points are handy to trace qgroup reserve space related
problems.

Also export btrfs_qgroup structure, as now we directly pass btrfs_qgroup
structure to trace points, so that structure needs to be exported.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
2017-03-13 15:52:08 +08:00
committed by David Sterba
parent 825ad4c964
commit 3159fe7bae
3 changed files with 96 additions and 44 deletions
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44
include/trace/events/btrfs.h
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@@ -25,6 +25,7 @@ struct extent_buffer;
struct btrfs_work;
struct __btrfs_workqueue;
struct btrfs_qgroup_extent_record;
struct btrfs_qgroup;
#define show_ref_type(type) \
__print_symbolic(type, \
@@ -1614,6 +1615,49 @@ TRACE_EVENT(qgroup_update_counters,
__entry->cur_new_count)
);
TRACE_EVENT(qgroup_update_reserve,
TP_PROTO(struct btrfs_fs_info *fs_info, struct btrfs_qgroup *qgroup,
s64 diff),
TP_ARGS(fs_info, qgroup, diff),
TP_STRUCT__entry_btrfs(
__field( u64, qgid )
__field( u64, cur_reserved )
__field( s64, diff )
),
TP_fast_assign_btrfs(fs_info,
__entry->qgid = qgroup->qgroupid;
__entry->cur_reserved = qgroup->reserved;
__entry->diff = diff;
),
TP_printk_btrfs("qgid=%llu cur_reserved=%llu diff=%lld",
__entry->qgid, __entry->cur_reserved, __entry->diff)
);
TRACE_EVENT(qgroup_meta_reserve,
TP_PROTO(struct btrfs_root *root, s64 diff),
TP_ARGS(root, diff),
TP_STRUCT__entry_btrfs(
__field( u64, refroot )
__field( s64, diff )
),
TP_fast_assign_btrfs(root->fs_info,
__entry->refroot = root->objectid;
__entry->diff = diff;
),
TP_printk_btrfs("refroot=%llu(%s) diff=%lld",
show_root_type(__entry->refroot), __entry->diff)
);
#endif /* _TRACE_BTRFS_H */
/* This part must be outside protection */