erofs: get rid of z_erofs_map_blocks_iter_* tracepoints

Consolidate them under erofs_map_blocks_* for simplicity since we
have many other ways to know if a given inode is compressed or not.
Signed-off-by: Hongzhen Luo <hongzhen@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240710083459.208362-1-hongzhen@linux.alibaba.comSigned-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

fs/erofs/zmap.c

@@ -686,7 +686,7 @@ int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map,
 	struct erofs_inode *const vi = EROFS_I(inode);
 	int err = 0;
 
-	trace_z_erofs_map_blocks_iter_enter(inode, map, flags);
+	trace_erofs_map_blocks_enter(inode, map, flags);
 
 	/* when trying to read beyond EOF, leave it unmapped */
 	if (map->m_la >= inode->i_size) {
@@ -713,7 +713,7 @@ int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map,
 out:
 	if (err)
 		map->m_llen = 0;
-	trace_z_erofs_map_blocks_iter_exit(inode, map, flags, err);
+	trace_erofs_map_blocks_exit(inode, map, flags, err);
 	return err;
 }
 

include/trace/events/erofs.h

@@ -143,7 +143,8 @@ TRACE_EVENT(erofs_readpages,
 		__entry->raw)
 );
 
-DECLARE_EVENT_CLASS(erofs__map_blocks_enter,
+TRACE_EVENT(erofs_map_blocks_enter,
+
 	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
 		 unsigned int flags),
 
@@ -171,21 +172,8 @@ DECLARE_EVENT_CLASS(erofs__map_blocks_enter,
 		  __entry->flags ? show_map_flags(__entry->flags) : "NULL")
 );
 
-DEFINE_EVENT(erofs__map_blocks_enter, erofs_map_blocks_enter,
-	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
-		 unsigned flags),
-
-	TP_ARGS(inode, map, flags)
-);
-
-DEFINE_EVENT(erofs__map_blocks_enter, z_erofs_map_blocks_iter_enter,
-	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
-		 unsigned int flags),
-
-	TP_ARGS(inode, map, flags)
-);
+TRACE_EVENT(erofs_map_blocks_exit,
 
-DECLARE_EVENT_CLASS(erofs__map_blocks_exit,
 	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
 		 unsigned int flags, int ret),
 
@@ -223,20 +211,6 @@ DECLARE_EVENT_CLASS(erofs__map_blocks_exit,
 		  show_mflags(__entry->mflags), __entry->ret)
 );
 
-DEFINE_EVENT(erofs__map_blocks_exit, erofs_map_blocks_exit,
-	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
-		 unsigned flags, int ret),
-
-	TP_ARGS(inode, map, flags, ret)
-);
-
-DEFINE_EVENT(erofs__map_blocks_exit, z_erofs_map_blocks_iter_exit,
-	TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
-		 unsigned int flags, int ret),
-
-	TP_ARGS(inode, map, flags, ret)
-);
-
 TRACE_EVENT(erofs_destroy_inode,
 	TP_PROTO(struct inode *inode),