diff --git a/include/sync/sync.h b/include/sync/sync.h
index 6aa5f2d..f015fa1 100644
--- a/include/sync/sync.h
+++ b/include/sync/sync.h
@@ -19,11 +19,28 @@
 #ifndef __SYS_CORE_SYNC_H
 #define __SYS_CORE_SYNC_H
 
-#include <linux/sync.h>
-#include <linux/sw_sync.h>
+#include <sys/cdefs.h>
+#include <stdint.h>
 
 __BEGIN_DECLS
 
+// XXX: These structs are copied from the header "linux/sync.h".
+struct sync_fence_info_data {
+ uint32_t len;
+ char name[32];
+ int32_t status;
+ uint8_t pt_info[0];
+};
+
+struct sync_pt_info {
+ uint32_t len;
+ char obj_name[32];
+ char driver_name[32];
+ int32_t status;
+ uint64_t timestamp_ns;
+ uint8_t driver_data[0];
+};
+
 /* timeout in msecs */
 int sync_wait(int fd, unsigned int timeout);
 int sync_merge(const char *name, int fd1, int fd2);