tracing: Convert more ext4 events to DEFINE_EVENT

Use DECLARE_EVENT_CLASS, and save ~2.7K:

   text    data     bss     dec     hex filename
 274441    7200     260  281901   44d2d fs/ext4/ext4.o.orig
 271881    7040     256  279177   44289 fs/ext4/ext4.o

4 events are converted:

  ext4__mb_new_pa: ext4_mb_new_inode_pa, ext4_mb_new_group_pa
  ext4__mballoc:   ext4_mballoc_discard, ext4_mballoc_free

No change in functionality.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 17 insertions, 44 deletions

diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 99fbf1d0a6b9..5d60ad4ebf78 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -353,7 +353,7 @@ TRACE_EVENT(ext4_discard_blocks,
                   jbd2_dev_to_name(__entry->dev), __entry->blk, __entry->count)
 );
 
-TRACE_EVENT(ext4_mb_new_inode_pa,
+DECLARE_EVENT_CLASS(ext4__mb_new_pa,
         TP_PROTO(struct ext4_allocation_context *ac,
                  struct ext4_prealloc_space *pa),
 
@@ -381,32 +381,20 @@ TRACE_EVENT(ext4_mb_new_inode_pa,
                   __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
 );
 
-TRACE_EVENT(ext4_mb_new_group_pa,
+DEFINE_EVENT(ext4__mb_new_pa, ext4_mb_new_inode_pa,
+
         TP_PROTO(struct ext4_allocation_context *ac,
                  struct ext4_prealloc_space *pa),
 
-        TP_ARGS(ac, pa),
-
-        TP_STRUCT__entry(
-                __field(        dev_t,  dev                     )
-                __field(        ino_t,  ino                     )
-                __field(        __u64,  pa_pstart               )
-                __field(        __u32,  pa_len                  )
-                __field(        __u64,  pa_lstart               )
+        TP_ARGS(ac, pa)
+);
 
-        ),
+DEFINE_EVENT(ext4__mb_new_pa, ext4_mb_new_group_pa,
 
-        TP_fast_assign(
-                __entry->dev            = ac->ac_sb->s_dev;
-                __entry->ino            = ac->ac_inode->i_ino;
-                __entry->pa_pstart      = pa->pa_pstart;
-                __entry->pa_len         = pa->pa_len;
-                __entry->pa_lstart      = pa->pa_lstart;
-        ),
+        TP_PROTO(struct ext4_allocation_context *ac,
+                 struct ext4_prealloc_space *pa),
 
-        TP_printk("dev %s ino %lu pstart %llu len %u lstart %llu",
-                  jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
-                  __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
+        TP_ARGS(ac, pa)
 );
 
 TRACE_EVENT(ext4_mb_release_inode_pa,
@@ -790,7 +778,7 @@ TRACE_EVENT(ext4_mballoc_prealloc,
                   __entry->result_len, __entry->result_logical)
 );
 
-TRACE_EVENT(ext4_mballoc_discard,
+DECLARE_EVENT_CLASS(ext4__mballoc,
         TP_PROTO(struct ext4_allocation_context *ac),
 
         TP_ARGS(ac),
@@ -819,33 +807,18 @@ TRACE_EVENT(ext4_mballoc_discard,
                   __entry->result_len, __entry->result_logical)
 );
 
-TRACE_EVENT(ext4_mballoc_free,
+DEFINE_EVENT(ext4__mballoc, ext4_mballoc_discard,
+
         TP_PROTO(struct ext4_allocation_context *ac),
 
-        TP_ARGS(ac),
+        TP_ARGS(ac)
+);
 
-        TP_STRUCT__entry(
-                __field(        dev_t,  dev                     )
-                __field(        ino_t,  ino                     )
-                __field(        __u32,  result_logical          )
-                __field(          int,  result_start            )
-                __field(        __u32,  result_group            )
-                __field(          int,  result_len              )
-        ),
+DEFINE_EVENT(ext4__mballoc, ext4_mballoc_free,
 
-        TP_fast_assign(
-                __entry->dev            = ac->ac_inode->i_sb->s_dev;
-                __entry->ino            = ac->ac_inode->i_ino;
-                __entry->result_logical = ac->ac_b_ex.fe_logical;
-                __entry->result_start   = ac->ac_b_ex.fe_start;
-                __entry->result_group   = ac->ac_b_ex.fe_group;
-                __entry->result_len     = ac->ac_b_ex.fe_len;
-        ),
+        TP_PROTO(struct ext4_allocation_context *ac),
 
-        TP_printk("dev %s inode %lu extent %u/%d/%u@%u ",
-                  jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
-                  __entry->result_group, __entry->result_start,
-                  __entry->result_len, __entry->result_logical)
+        TP_ARGS(ac)
 );
 
 TRACE_EVENT(ext4_forget,