ext4: Add new tracepoint for jbd2_cleanup_journal_tail

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

1 files changed, 28 insertions, 0 deletions

diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 96b370a050de..bf16545cc977 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -199,6 +199,34 @@ TRACE_EVENT(jbd2_checkpoint_stats,
                   __entry->forced_to_close, __entry->written, __entry->dropped)
 );
 
+TRACE_EVENT(jbd2_cleanup_journal_tail,
+
+        TP_PROTO(journal_t *journal, tid_t first_tid,
+                 unsigned long block_nr, unsigned long freed),
+
+        TP_ARGS(journal, first_tid, block_nr, freed),
+
+        TP_STRUCT__entry(
+                __field(        dev_t,  dev                     )
+                __field(        tid_t,  tail_sequence           )
+                __field(        tid_t,  first_tid               )
+                __field(unsigned long,  block_nr                )
+                __field(unsigned long,  freed                   )
+        ),
+
+        TP_fast_assign(
+                __entry->dev            = journal->j_fs_dev->bd_dev;
+                __entry->tail_sequence  = journal->j_tail_sequence;
+                __entry->first_tid      = first_tid;
+                __entry->block_nr       = block_nr;
+                __entry->freed          = freed;
+        ),
+
+        TP_printk("dev %s from %u to %u offset %lu freed %lu",
+                  jbd2_dev_to_name(__entry->dev), __entry->tail_sequence,
+                  __entry->first_tid, __entry->block_nr, __entry->freed)
+);
+
 #endif /* _TRACE_JBD2_H */
 
 /* This part must be outside protection */