btrfs: add trace for qgroup accounting

We want this to debug qgroup changes on live systems.

Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 2ce4ce7b47d8..1e4c6e95ab55 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1335,6 +1335,8 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
         INIT_LIST_HEAD(&oper->elem.list);
         oper->elem.seq = 0;
 
+        trace_btrfs_qgroup_record_ref(oper);
+
         if (type == BTRFS_QGROUP_OPER_SUB_SUBTREE) {
                 /*
                  * If any operation for this bytenr/ref_root combo
@@ -2077,6 +2079,8 @@ static int btrfs_qgroup_account(struct btrfs_trans_handle *trans,
 
         ASSERT(is_fstree(oper->ref_root));
 
+        trace_btrfs_qgroup_account(oper);
+
         switch (oper->type) {
         case BTRFS_QGROUP_OPER_ADD_EXCL:
         case BTRFS_QGROUP_OPER_SUB_EXCL:
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index d66fbd57f1b5..3f1f4e2dc78f 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -60,6 +60,7 @@
 #include "backref.h"
 #include "tests/btrfs-tests.h"
 
+#include "qgroup.h"
 #define CREATE_TRACE_POINTS
 #include <trace/events/btrfs.h>