summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMark Fasheh <mfasheh@suse.de>2016-03-29 17:19:55 -0700
committerDavid Sterba <dsterba@suse.com>2016-04-04 16:29:22 +0200
commit0f5dcf8de974db5970d48d12a202997baa2846a1 (patch)
tree46fcf009452af19d1c76b5f06d4facdfc3f98064
parentc79b4713304f812d3d6c95826fc3e5fc2c0b0c14 (diff)
downloadlinux-sh-0f5dcf8de974db5970d48d12a202997baa2846a1.tar.gz
btrfs: Add qgroup tracing
This patch adds tracepoints to the qgroup code on both the reporting side (insert_dirty_extents) and the accounting side. Taken together it allows us to see what qgroup operations have happened, and what their result was. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r--fs/btrfs/qgroup.c9
-rw-r--r--include/trace/events/btrfs.h89
2 files changed, 97 insertions, 1 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 7173360eea7a..9e119552ed32 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1463,6 +1463,7 @@ struct btrfs_qgroup_extent_record
u64 bytenr = record->bytenr;
assert_spin_locked(&delayed_refs->lock);
+ trace_btrfs_qgroup_insert_dirty_extent(record);
while (*p) {
parent_node = *p;
@@ -1594,6 +1595,9 @@ static int qgroup_update_counters(struct btrfs_fs_info *fs_info,
cur_old_count = btrfs_qgroup_get_old_refcnt(qg, seq);
cur_new_count = btrfs_qgroup_get_new_refcnt(qg, seq);
+ trace_qgroup_update_counters(qg->qgroupid, cur_old_count,
+ cur_new_count);
+
/* Rfer update part */
if (cur_old_count == 0 && cur_new_count > 0) {
qg->rfer += num_bytes;
@@ -1683,6 +1687,9 @@ btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans,
goto out_free;
BUG_ON(!fs_info->quota_root);
+ trace_btrfs_qgroup_account_extent(bytenr, num_bytes, nr_old_roots,
+ nr_new_roots);
+
qgroups = ulist_alloc(GFP_NOFS);
if (!qgroups) {
ret = -ENOMEM;
@@ -1752,6 +1759,8 @@ int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans,
record = rb_entry(node, struct btrfs_qgroup_extent_record,
node);
+ trace_btrfs_qgroup_account_extents(record);
+
if (!ret) {
/*
* Use (u64)-1 as time_seq to do special search, which
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index d866f21efbbf..467a4d205ff6 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -23,7 +23,7 @@ struct map_lookup;
struct extent_buffer;
struct btrfs_work;
struct __btrfs_workqueue;
-struct btrfs_qgroup_operation;
+struct btrfs_qgroup_extent_record;
#define show_ref_type(type) \
__print_symbolic(type, \
@@ -1231,6 +1231,93 @@ DEFINE_EVENT(btrfs__qgroup_delayed_ref, btrfs_qgroup_free_delayed_ref,
TP_ARGS(ref_root, reserved)
);
+
+DECLARE_EVENT_CLASS(btrfs_qgroup_extent,
+ TP_PROTO(struct btrfs_qgroup_extent_record *rec),
+
+ TP_ARGS(rec),
+
+ TP_STRUCT__entry(
+ __field( u64, bytenr )
+ __field( u64, num_bytes )
+ ),
+
+ TP_fast_assign(
+ __entry->bytenr = rec->bytenr,
+ __entry->num_bytes = rec->num_bytes;
+ ),
+
+ TP_printk("bytenr = %llu, num_bytes = %llu",
+ (unsigned long long)__entry->bytenr,
+ (unsigned long long)__entry->num_bytes)
+);
+
+DEFINE_EVENT(btrfs_qgroup_extent, btrfs_qgroup_account_extents,
+
+ TP_PROTO(struct btrfs_qgroup_extent_record *rec),
+
+ TP_ARGS(rec)
+);
+
+DEFINE_EVENT(btrfs_qgroup_extent, btrfs_qgroup_insert_dirty_extent,
+
+ TP_PROTO(struct btrfs_qgroup_extent_record *rec),
+
+ TP_ARGS(rec)
+);
+
+TRACE_EVENT(btrfs_qgroup_account_extent,
+
+ TP_PROTO(u64 bytenr, u64 num_bytes, u64 nr_old_roots, u64 nr_new_roots),
+
+ TP_ARGS(bytenr, num_bytes, nr_old_roots, nr_new_roots),
+
+ TP_STRUCT__entry(
+ __field( u64, bytenr )
+ __field( u64, num_bytes )
+ __field( u64, nr_old_roots )
+ __field( u64, nr_new_roots )
+ ),
+
+ TP_fast_assign(
+ __entry->bytenr = bytenr;
+ __entry->num_bytes = num_bytes;
+ __entry->nr_old_roots = nr_old_roots;
+ __entry->nr_new_roots = nr_new_roots;
+ ),
+
+ TP_printk("bytenr = %llu, num_bytes = %llu, nr_old_roots = %llu, "
+ "nr_new_roots = %llu",
+ __entry->bytenr,
+ __entry->num_bytes,
+ __entry->nr_old_roots,
+ __entry->nr_new_roots)
+);
+
+TRACE_EVENT(qgroup_update_counters,
+
+ TP_PROTO(u64 qgid, u64 cur_old_count, u64 cur_new_count),
+
+ TP_ARGS(qgid, cur_old_count, cur_new_count),
+
+ TP_STRUCT__entry(
+ __field( u64, qgid )
+ __field( u64, cur_old_count )
+ __field( u64, cur_new_count )
+ ),
+
+ TP_fast_assign(
+ __entry->qgid = qgid;
+ __entry->cur_old_count = cur_old_count;
+ __entry->cur_new_count = cur_new_count;
+ ),
+
+ TP_printk("qgid = %llu, cur_old_count = %llu, cur_new_count = %llu",
+ __entry->qgid,
+ __entry->cur_old_count,
+ __entry->cur_new_count)
+);
+
#endif /* _TRACE_BTRFS_H */
/* This part must be outside protection */