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btrfs: qgroup: Update trace events for metadata reservation

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Now trace_qgroup_meta_reserve() will have extra type parameter.

And introduce two new trace events:

1) trace_qgroup_meta_free_all_pertrans()
   For btrfs_qgroup_free_meta_all_pertrans()

2) trace_qgroup_meta_convert()
   For btrfs_qgroup_convert_reserved_meta()

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2017-12-12 15:34:35 +08:00 committed by David Sterba
parent 8287475a20
commit 4ee0d8832c
2 changed files with 59 additions and 7 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

7
fs/btrfs/qgroup.c
View file

@ -3138,7 +3138,7 @@ int __btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes,
return 0;
BUG_ON(num_bytes != round_down(num_bytes, fs_info->nodesize));
trace_qgroup_meta_reserve(root, (s64)num_bytes);
trace_qgroup_meta_reserve(root, type, (s64)num_bytes);
ret = qgroup_reserve(root, num_bytes, enforce, type);
if (ret < 0)
return ret;
@ -3163,7 +3163,7 @@ void btrfs_qgroup_free_meta_all_pertrans(struct btrfs_root *root)
return;
/* TODO: Update trace point to handle such free */
trace_qgroup_meta_reserve(root, 0);
trace_qgroup_meta_free_all_pertrans(root);
/* Special value -1 means to free all reserved space */
btrfs_qgroup_free_refroot(fs_info, root->objectid, (u64)-1,
BTRFS_QGROUP_RSV_META_PERTRANS);
@ -3185,7 +3185,7 @@ void __btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes,
*/
num_bytes = sub_root_meta_rsv(root, num_bytes, type);
BUG_ON(num_bytes != round_down(num_bytes, fs_info->nodesize));
trace_qgroup_meta_reserve(root, -(s64)num_bytes);
trace_qgroup_meta_reserve(root, type, -(s64)num_bytes);
btrfs_qgroup_free_refroot(fs_info, root->objectid, num_bytes, type);
}
@ -3245,6 +3245,7 @@ void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes)
/* Same as btrfs_qgroup_free_meta_prealloc() */
num_bytes = sub_root_meta_rsv(root, num_bytes,
BTRFS_QGROUP_RSV_META_PREALLOC);
trace_qgroup_meta_convert(root, num_bytes);
qgroup_convert_meta(fs_info, root->objectid, num_bytes);
}

59
include/trace/events/btrfs.h
View file

@ -1663,13 +1663,14 @@ TRACE_EVENT(qgroup_update_reserve,
TRACE_EVENT(qgroup_meta_reserve,
TP_PROTO(struct btrfs_root *root, s64 diff),
TP_PROTO(struct btrfs_root *root, s64 diff, int type),
TP_ARGS(root, diff),
TP_ARGS(root, diff, type),
TP_STRUCT__entry_btrfs(
__field( u64, refroot )
__field( s64, diff )
__field( int, type )
),
TP_fast_assign_btrfs(root->fs_info,
@ -1677,8 +1678,58 @@ TRACE_EVENT(qgroup_meta_reserve,
__entry->diff = diff;
),
TP_printk_btrfs("refroot=%llu(%s) diff=%lld",
show_root_type(__entry->refroot), __entry->diff)
TP_printk_btrfs("refroot=%llu(%s) type=%s diff=%lld",
show_root_type(__entry->refroot),
show_qgroup_rsv_type(__entry->type), __entry->diff)
);
TRACE_EVENT(qgroup_meta_convert,
TP_PROTO(struct btrfs_root *root, s64 diff),
TP_ARGS(root, diff),
TP_STRUCT__entry_btrfs(
__field( u64, refroot )
__field( s64, diff )
__field( int, type )
),
TP_fast_assign_btrfs(root->fs_info,
__entry->refroot = root->objectid;
__entry->diff = diff;
),
TP_printk_btrfs("refroot=%llu(%s) type=%s->%s diff=%lld",
show_root_type(__entry->refroot),
show_qgroup_rsv_type(BTRFS_QGROUP_RSV_META_PREALLOC),
show_qgroup_rsv_type(BTRFS_QGROUP_RSV_META_PERTRANS),
__entry->diff)
);
TRACE_EVENT(qgroup_meta_free_all_pertrans,
TP_PROTO(struct btrfs_root *root),
TP_ARGS(root),
TP_STRUCT__entry_btrfs(
__field( u64, refroot )
__field( s64, diff )
__field( int, type )
),
TP_fast_assign_btrfs(root->fs_info,
__entry->refroot = root->objectid;
spin_lock(&root->qgroup_meta_rsv_lock);
__entry->diff = -(s64)root->qgroup_meta_rsv_pertrans;
spin_unlock(&root->qgroup_meta_rsv_lock);
__entry->type = BTRFS_QGROUP_RSV_META_PERTRANS;
),
TP_printk_btrfs("refroot=%llu(%s) type=%s diff=%lld",
show_root_type(__entry->refroot),
show_qgroup_rsv_type(__entry->type), __entry->diff)
);
DECLARE_EVENT_CLASS(btrfs__prelim_ref,