Now each qgroup reserve for data will has its ftrace event for better
debugging.
Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
---
v2:
Newly introduced
v3:
None
---
fs/btrfs/qgroup.c | 11 ++++-
fs/btrfs/qgroup.h | 8 +++
include/trace/events/btrfs.h | 113 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 130 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 646a867..b3b485a 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2511,10 +2511,12 @@ int btrfs_qgroup_reserve_data(struct inode *inode, u64
start, u64 len)
changeset.bytes_changed = 0;
changeset.range_changed = ulist_alloc(GFP_NOFS);
-
ret = set_record_extent_bits(&BTRFS_I(inode)->io_tree, start,
start + len -1, EXTENT_QGROUP_RESERVED, GFP_NOFS,
&changeset);
+ trace_btrfs_qgroup_reserve_data(inode, start, len,
+ changeset.bytes_changed,
+ QGROUP_RESERVE);
if (ret < 0)
goto cleanup;
ret = qgroup_reserve(root, changeset.bytes_changed);
@@ -2539,6 +2541,7 @@ static int __btrfs_qgroup_release_data(struct inode
*inode, u64 start, u64 len,
int free)
{
struct extent_changeset changeset;
+ int trace_op = QGROUP_RELEASE;
int ret;
changeset.bytes_changed = 0;
@@ -2552,8 +2555,12 @@ static int __btrfs_qgroup_release_data(struct inode
*inode, u64 start, u64 len,
if (ret < 0)
goto out;
- if (free)
+ if (free) {
qgroup_free(BTRFS_I(inode)->root, changeset.bytes_changed);
+ trace_op = QGROUP_FREE;
+ }
+ trace_btrfs_qgroup_release_data(inode, start, len,
+ changeset.bytes_changed, trace_op);
out:
ulist_free(changeset.range_changed);
return ret;
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index adb03da..686b60f 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -33,6 +33,13 @@ struct btrfs_qgroup_extent_record {
struct ulist *old_roots;
};
+/*
+ * For qgroup event trace points only
+ */
+#define QGROUP_RESERVE (1<<0)
+#define QGROUP_RELEASE (1<<1)
+#define QGROUP_FREE (1<<2)
+
int btrfs_quota_enable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_quota_disable(struct btrfs_trans_handle *trans,
@@ -81,6 +88,7 @@ static inline void btrfs_qgroup_free_delayed_ref(struct
btrfs_fs_info *fs_info,
u64 ref_root, u64 num_bytes)
{
btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes);
+ trace_btrfs_qgroup_free_delayed_ref(ref_root, num_bytes);
}
void assert_qgroups_uptodate(struct btrfs_trans_handle *trans);
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 0b73af9..b4473da 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -1117,6 +1117,119 @@ DEFINE_EVENT(btrfs__workqueue_done,
btrfs_workqueue_destroy,
TP_ARGS(wq)
);
+DECLARE_EVENT_CLASS(btrfs__qgroup_data_map,
+
+ TP_PROTO(struct inode *inode, u64 free_reserved),
+
+ TP_ARGS(inode, free_reserved),
+
+ TP_STRUCT__entry(
+ __field( u64, rootid )
+ __field( unsigned long, ino )
+ __field( u64, free_reserved )
+ ),
+
+ TP_fast_assign(
+ __entry->rootid = BTRFS_I(inode)->root->objectid;
+ __entry->ino = inode->i_ino;
+ __entry->free_reserved = free_reserved;
+ ),
+
+ TP_printk("rootid=%llu, ino=%lu, free_reserved=%llu",
+ __entry->rootid, __entry->ino, __entry->free_reserved)
+);
+
+DEFINE_EVENT(btrfs__qgroup_data_map, btrfs_qgroup_init_data_rsv_map,
+
+ TP_PROTO(struct inode *inode, u64 free_reserved),
+
+ TP_ARGS(inode, free_reserved)
+);
+
+DEFINE_EVENT(btrfs__qgroup_data_map, btrfs_qgroup_free_data_rsv_map,
+
+ TP_PROTO(struct inode *inode, u64 free_reserved),
+
+ TP_ARGS(inode, free_reserved)
+);
+
+#define BTRFS_QGROUP_OPERATIONS \
+ { QGROUP_RESERVE, "reserve" }, \
+ { QGROUP_RELEASE, "release" }, \
+ { QGROUP_FREE, "free" }
+
+DECLARE_EVENT_CLASS(btrfs__qgroup_rsv_data,
+
+ TP_PROTO(struct inode *inode, u64 start, u64 len, u64 reserved, int op),
+
+ TP_ARGS(inode, start, len, reserved, op),
+
+ TP_STRUCT__entry(
+ __field( u64, rootid )
+ __field( unsigned long, ino )
+ __field( u64, start )
+ __field( u64, len )
+ __field( u64, reserved )
+ __field( int, op )
+ ),
+
+ TP_fast_assign(
+ __entry->rootid = BTRFS_I(inode)->root->objectid;
+ __entry->ino = inode->i_ino;
+ __entry->start = start;
+ __entry->len = len;
+ __entry->reserved = reserved;
+ __entry->op = op;
+ ),
+
+ TP_printk("root=%llu, ino=%lu, start=%llu, len=%llu, reserved=%llu,
op=%s",
+ __entry->rootid, __entry->ino, __entry->start, __entry->len,
+ __entry->reserved,
+ __print_flags((unsigned long)__entry->op, "",
+ BTRFS_QGROUP_OPERATIONS)
+ )
+);
+
+DEFINE_EVENT(btrfs__qgroup_rsv_data, btrfs_qgroup_reserve_data,
+
+ TP_PROTO(struct inode *inode, u64 start, u64 len, u64 reserved, int op),
+
+ TP_ARGS(inode, start, len, reserved, op)
+);
+
+DEFINE_EVENT(btrfs__qgroup_rsv_data, btrfs_qgroup_release_data,
+
+ TP_PROTO(struct inode *inode, u64 start, u64 len, u64 reserved, int op),
+
+ TP_ARGS(inode, start, len, reserved, op)
+);
+
+DECLARE_EVENT_CLASS(btrfs__qgroup_delayed_ref,
+
+ TP_PROTO(u64 ref_root, u64 reserved),
+
+ TP_ARGS(ref_root, reserved),
+
+ TP_STRUCT__entry(
+ __field( u64, ref_root )
+ __field( u64, reserved )
+ ),
+
+ TP_fast_assign(
+ __entry->ref_root = ref_root;
+ __entry->reserved = reserved;
+ ),
+
+ TP_printk("root=%llu, reserved=%llu, op=free",
+ __entry->ref_root, __entry->reserved)
+);
+
+DEFINE_EVENT(btrfs__qgroup_delayed_ref, btrfs_qgroup_free_delayed_ref,
+
+ TP_PROTO(u64 ref_root, u64 reserved),
+
+ TP_ARGS(ref_root, reserved)
+);
#endif /* _TRACE_BTRFS_H */
/* This part must be outside protection */
--
2.6.1
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
