ext4: Add new tracepoints to track mballoc's buddy bitmap loads

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 2aa6aa3e8f6..99fbf1d0a6b 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -974,6 +974,39 @@ TRACE_EVENT(ext4_da_release_space,
                   __entry->reserved_meta_blocks, __entry->allocated_meta_blocks)
 );
 
+DECLARE_EVENT_CLASS(ext4__bitmap_load,
+        TP_PROTO(struct super_block *sb, unsigned long group),
+
+        TP_ARGS(sb, group),
+
+        TP_STRUCT__entry(
+                __field(        dev_t,  dev                     )
+                __field(        __u32,  group                   )
+
+        ),
+
+        TP_fast_assign(
+                __entry->dev    = sb->s_dev;
+                __entry->group  = group;
+        ),
+
+        TP_printk("dev %s group %u",
+                  jbd2_dev_to_name(__entry->dev), __entry->group)
+);
+
+DEFINE_EVENT(ext4__bitmap_load, ext4_mb_bitmap_load,
+
+        TP_PROTO(struct super_block *sb, unsigned long group),
+
+        TP_ARGS(sb, group)
+);
+
+DEFINE_EVENT(ext4__bitmap_load, ext4_mb_buddy_bitmap_load,
+
+        TP_PROTO(struct super_block *sb, unsigned long group),
+
+        TP_ARGS(sb, group)
+);
 
 #endif /* _TRACE_EXT4_H */