Revert "新的内存管理模块 (#301)" (#302)

This reverts commit d8ad0a5e77.

kernel/src/common/atomic.h

@@ -9,7 +9,6 @@
  *
  */
 #pragma once
-#include <arch/x86_64/include/asm/cmpxchg.h>
 
 #define atomic_read(atomic)	((atomic)->value)   // 读取原子变量
 #define atomic_set(atomic,val)	(((atomic)->value) = (val)) // 设置原子变量的初始值
@@ -98,10 +97,3 @@ inline void atomic_clear_mask(atomic_t *ato, long mask)
                          : "r"(mask)
                          : "memory");
 }
-
-// cmpxchgq 比较并交换
-inline long atomic_cmpxchg(atomic_t *ato, long oldval, long newval)
-{
-    bool success = arch_try_cmpxchg(&ato->value, &oldval, &newval);
-    return success ? oldval : newval;
-}