...ukg69 系统首先保存当前进程寄存器和系统状态其次重置下个进程寄存器状态 wqkfbaiducukg69 6) 系统返回时间(Return from Call) wqkfbaiducukg69 内核在返回到用户态之前用于检查必要返回条件所用时间[8] wqkfbaiducukg69 为达到尽量减少任务响应时间目我们考...
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Return From Last Call 返回呼叫 ; 回呼叫
return from system call 从系统调用返回
Return From Lcompared tot Call 前往呼叫
RETURN Return from function call 从函数调用返回
Select the last Return from the call path to see the result as shown in Figure 51.
从调用路径中选择最后一个Return,以创建结果,如图51中所示。
Upon return from the system call, syscall_exit is eventually reached, and a call to resume_userspace transitions back to user-space.
从系统调用中返回后,最终执行syscall_exit,并调用resume_userspace返回用户空间。
This is an important difference to note since you are probably used to the case where a return from a method call implies that its work has finished completely.
这是一个要非常注意的不同点,因为您可能已经习惯了这样的一种情况——一个方法调用返回后就意味着该方法正确执行完毕了。
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