tracing: Convert some jbd2 events to DEFINE_EVENT

Use DECLARE_EVENT_CLASS to remove duplicate code:

   text    data     bss     dec     hex filename
  34903    1693     448   37044    90b4 fs/jbd2/journal.o.old
  31931    1693     416   34040    84f8 fs/jbd2/journal.o

Four events are converted:

  jbd2_commit: jbd2_start_commit,
               jbd2_commit_{locking, flushing, logging}

No change in functionality.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4B0E290F.7030909@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 11 insertions, 52 deletions

diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 3c60b75adb9e..96b370a050de 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -30,7 +30,7 @@ TRACE_EVENT(jbd2_checkpoint,
                   jbd2_dev_to_name(__entry->dev), __entry->result)
 );
 
-TRACE_EVENT(jbd2_start_commit,
+DECLARE_EVENT_CLASS(jbd2_commit,
 
         TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
 
@@ -53,73 +53,32 @@ TRACE_EVENT(jbd2_start_commit,
                   __entry->sync_commit)
 );
 
-TRACE_EVENT(jbd2_commit_locking,
+DEFINE_EVENT(jbd2_commit, jbd2_start_commit,
 
         TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
 
-        TP_ARGS(journal, commit_transaction),
-
-        TP_STRUCT__entry(
-                __field(        dev_t,  dev                     )
-                __field(        char,   sync_commit               )
-                __field(        int,    transaction               )
-        ),
-
-        TP_fast_assign(
-                __entry->dev            = journal->j_fs_dev->bd_dev;
-                __entry->sync_commit = commit_transaction->t_synchronous_commit;
-                __entry->transaction    = commit_transaction->t_tid;
-        ),
-
-        TP_printk("dev %s transaction %d sync %d",
-                  jbd2_dev_to_name(__entry->dev), __entry->transaction,
-                  __entry->sync_commit)
+        TP_ARGS(journal, commit_transaction)
 );
 
-TRACE_EVENT(jbd2_commit_flushing,
+DEFINE_EVENT(jbd2_commit, jbd2_commit_locking,
 
         TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
 
-        TP_ARGS(journal, commit_transaction),
-
-        TP_STRUCT__entry(
-                __field(        dev_t,  dev                     )
-                __field(        char,   sync_commit               )
-                __field(        int,    transaction               )
-        ),
-
-        TP_fast_assign(
-                __entry->dev            = journal->j_fs_dev->bd_dev;
-                __entry->sync_commit = commit_transaction->t_synchronous_commit;
-                __entry->transaction    = commit_transaction->t_tid;
-        ),
-
-        TP_printk("dev %s transaction %d sync %d",
-                  jbd2_dev_to_name(__entry->dev), __entry->transaction,
-                  __entry->sync_commit)
+        TP_ARGS(journal, commit_transaction)
 );
 
-TRACE_EVENT(jbd2_commit_logging,
+DEFINE_EVENT(jbd2_commit, jbd2_commit_flushing,
 
         TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
 
-        TP_ARGS(journal, commit_transaction),
+        TP_ARGS(journal, commit_transaction)
+);
 
-        TP_STRUCT__entry(
-                __field(        dev_t,  dev                     )
-                __field(        char,   sync_commit               )
-                __field(        int,    transaction               )
-        ),
+DEFINE_EVENT(jbd2_commit, jbd2_commit_logging,
 
-        TP_fast_assign(
-                __entry->dev            = journal->j_fs_dev->bd_dev;
-                __entry->sync_commit = commit_transaction->t_synchronous_commit;
-                __entry->transaction    = commit_transaction->t_tid;
-        ),
+        TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
 
-        TP_printk("dev %s transaction %d sync %d",
-                  jbd2_dev_to_name(__entry->dev), __entry->transaction,
-                  __entry->sync_commit)
+        TP_ARGS(journal, commit_transaction)
 );
 
 TRACE_EVENT(jbd2_end_commit,