diff --git a/kmpp/base/kmpp_frame.c b/kmpp/base/kmpp_frame.c
index a929d040..f4e5b335 100644
--- a/kmpp/base/kmpp_frame.c
+++ b/kmpp/base/kmpp_frame.c
@@ -10,6 +10,6 @@
 #define KMPP_OBJ_NAME               kmpp_frame
 #define KMPP_OBJ_INTF_TYPE          KmppFrame
 #define KMPP_OBJ_IMPL_TYPE          KmppFrameImpl
-#define KMPP_OBJ_SGLN_ID            MPP_SGLN_FRAME
+#define KMPP_OBJ_SGLN_ID            MPP_SGLN_KMPP_FRAME
 #define KMPP_OBJ_ENTRY_TABLE        KMPP_FRAME_ENTRY_TABLE
 #include "kmpp_obj_helper.h"
diff --git a/kmpp/base/kmpp_obj.c b/kmpp/base/kmpp_obj.c
index 31ce7a12..943d2784 100644
--- a/kmpp/base/kmpp_obj.c
+++ b/kmpp/base/kmpp_obj.c
@@ -16,6 +16,7 @@
 #include "mpp_debug.h"
 #include "mpp_common.h"
 #include "mpp_mem_pool.h"
+#include "mpp_singleton.h"
 
 #include "mpp_trie.h"
 #include "mpp_cfg_io.h"
@@ -261,8 +262,7 @@ MPP_OBJ_ACCESS_IMPL(fp, void *, % p)
 MPP_OBJ_STRUCT_ACCESS_IMPL(st, void, % p)
 MPP_OBJ_STRUCT_ACCESS_IMPL(shm, KmppShmPtr, % p)
 
-__attribute__ ((destructor))
-void kmpp_objs_deinit(void)
+static void kmpp_objs_deinit(void)
 {
     KmppObjs *p = MPP_FETCH_AND(&objs, NULL);
 
@@ -294,8 +294,7 @@ void kmpp_objs_deinit(void)
     }
 }
 
-__attribute__ ((constructor))
-void kmpp_objs_init(void)
+static void kmpp_objs_init(void)
 {
     static const char *dev = "/dev/kmpp_objs";
     KmppObjs *p = objs;
@@ -414,6 +413,8 @@ __failed:
     }
 }
 
+MPP_SINGLETON(MPP_SGLN_KOBJ, kmpp_obj, kmpp_objs_init, kmpp_objs_deinit);
+
 rk_s32 kmpp_objdef_put(KmppObjDef def)
 {
     KmppObjDefImpl *impl = (KmppObjDefImpl *)def;
diff --git a/kmpp/base/kmpp_packet.c b/kmpp/base/kmpp_packet.c
index 4a1aa7fa..779a2062 100644
--- a/kmpp/base/kmpp_packet.c
+++ b/kmpp/base/kmpp_packet.c
@@ -8,6 +8,6 @@
 #define KMPP_OBJ_NAME               kmpp_packet
 #define KMPP_OBJ_INTF_TYPE          KmppPacket
 #define KMPP_OBJ_IMPL_TYPE          KmppPacketImpl
-#define KMPP_OBJ_SGLN_ID            MPP_SGLN_PACKET
+#define KMPP_OBJ_SGLN_ID            MPP_SGLN_KMPP_PACKET
 #define KMPP_OBJ_ENTRY_TABLE        KMPP_PACKET_ENTRY_TABLE
 #include "kmpp_obj_helper.h"
\ No newline at end of file
diff --git a/osal/inc/mpp_singleton.h b/osal/inc/mpp_singleton.h
index 79cd8b5c..e8c36746 100644
--- a/osal/inc/mpp_singleton.h
+++ b/osal/inc/mpp_singleton.h
@@ -22,13 +22,18 @@ typedef enum MppSingletonId_e {
     MPP_SGLN_SERVER,
     /* software platform */
     MPP_SGLN_RUNTIME,
-    /* base module */
+    /* kernel module (MUST before userspace module) */
+    MPP_SGLN_KOBJ,
+    MPP_SGLN_KMPP_BUFFER,
+    MPP_SGLN_KMPP_META,
+    MPP_SGLN_KMPP_FRAME,
+    MPP_SGLN_KMPP_PACKET,
+    /* userspace base module */
     MPP_SGLN_BUFFER,
     MPP_SGLN_META,
     MPP_SGLN_FRAME,
     MPP_SGLN_PACKET,
-    /* system module */
-    MPP_SGLN_KOBJ,
+    /* userspace system module */
     MPP_SGLN_ENC_CFG,
     MPP_SGLN_DEC_CFG,
     MPP_SGLN_DEC_RC_API,