diff --git a/CPU/QingKeV3/os_port.c b/CPU/QingKeV3/os_port.c
index 706fc10..7ee3bb5 100644
--- a/CPU/QingKeV3/os_port.c
+++ b/CPU/QingKeV3/os_port.c
@@ -5,6 +5,7 @@
 #include "os_compiler.h"
 #include "os_systick.h"
 #include "os_sched.h"
+#include "os_isr.h"
 #include "qkv3.h"
 
 /* ------------------------------------------------------------------------------------------------------------------ */
@@ -16,7 +17,8 @@
 /* ------------------------------------------------------------------------------------------------------------------ */
 /*  */
 
-static uint32_t _SysTick_Config(os_tick_t ticks)
+OS_STATIC_FORCE_INLINE
+uint32_t _SysTick_Config(os_tick_t ticks)
 {
     QKV3_PFIC->CFGR=0xFA050003;                   /* 关闭硬件压栈和嵌套 */
     /*
@@ -187,6 +189,7 @@ void os_port_context_switch(void* from_sp, void* to_sp){
 
 void SysTick_Handler(void) __attribute__((interrupt()));
 void SysTick_Handler(void){
+    os_isr_enter();
     QKV3_SysTick->CTLR=0;
     QKV3_SysTick->CNTL0=0;QKV3_SysTick->CNTL1=0;QKV3_SysTick->CNTL2=0;QKV3_SysTick->CNTL3=0;
     QKV3_SysTick->CNTH0=0;QKV3_SysTick->CNTH1=0;QKV3_SysTick->CNTH2=0;QKV3_SysTick->CNTH3=0;
@@ -194,5 +197,6 @@ void SysTick_Handler(void){
 
     // 调用系统心跳处理
     os_systick_tick();
+    os_isr_leave();
 }
 
diff --git a/CPU/QingKeV3/qkv3.h b/CPU/QingKeV3/qkv3.h
index a676fcd..f27fe42 100644
--- a/CPU/QingKeV3/qkv3.h
+++ b/CPU/QingKeV3/qkv3.h
@@ -38,8 +38,6 @@
 
 #define QKV3_SysTick         ((QKV3_SysTick_Type *) 0xE000F000)
 
-
-
 /* ------------------------------------------------------------------------------------------------------------------ */
 /*  */
 
diff --git a/Kernel/SingleCore/os_config.h.in b/Kernel/SingleCore/os_config.h.in
index 92d72d8..e6ac75b 100644
--- a/Kernel/SingleCore/os_config.h.in
+++ b/Kernel/SingleCore/os_config.h.in
@@ -4,6 +4,7 @@
 /* ==================================================================================================== */
 /* OPTIONS */
 
+#cmakedefine OS_ALIGN_SIZE @OS_ALIGN_SIZE@
 #cmakedefine OS_CFG_CPU_INT_NBITS @OS_CFG_CPU_INT_NBITS@
 #cmakedefine OS_CFG_TICKS_PER_SECOND @OS_CFG_TICKS_PER_SECOND@
 #cmakedefine OS_CFG_SYSCALL_PRIORITY @OS_CFG_SYSCALL_PRIORITY@
@@ -17,6 +18,7 @@
 #cmakedefine OS_CFG_DEVICE_MAX @OS_CFG_DEVICE_MAX@
 
 
+
 /* ==================================================================================================== */
 /* DEFAULT */
 
diff --git a/Kernel/SingleCore/os_timewheel.c b/Kernel/SingleCore/os_timewheel.c
index 73b51a7..f89938d 100644
--- a/Kernel/SingleCore/os_timewheel.c
+++ b/Kernel/SingleCore/os_timewheel.c
@@ -5,11 +5,17 @@
 /* -------------------------------------------------------------------------------------------------------------- */
 /*  */
 
+OS_ALIGNED(OS_ALIGN_SIZE)
 os_list_t os_timewheel__R[TWR_SIZE];
+OS_ALIGNED(OS_ALIGN_SIZE)
 os_list_t os_timewheel__N0[TWN_SIZE];
+OS_ALIGNED(OS_ALIGN_SIZE)
 os_list_t os_timewheel__N1[TWN_SIZE];
+OS_ALIGNED(OS_ALIGN_SIZE)
 os_list_t os_timewheel__N2[TWN_SIZE];
+OS_ALIGNED(OS_ALIGN_SIZE)
 os_list_t os_timewheel__N3[TWN_SIZE];
+
 volatile os_tick_t os_timewheel__tick;