The values in the prev and intpri fields help in determining whether the processor is running a thread or an interrupt handler.

prev和intpri字段中的值帮助判断处理器是在运行线程还是在运行中断处理程序。

youdao

You set some registers and issue a system call instruction (or an interrupt) and have the kernel code called directly from the trap handler.

你可以设置一些寄存器，并发出一个系统调用指令(或中断)，并由陷阱处理程序直接调用内核代码。

youdao

To bind an interrupt to a CPU or group of CPUs, first determine which CPUs should process the interrupt and lay out the bitmask accordingly.

为了将一个中断绑定到某个或某组cpu，首先要决定应该让哪些CPU处理这个中断，然后相应地编写位掩码。

youdao

The RTC can either wake the entire board or trigger an interrupt at set intervals, which makes the board very power efficient when used in the field.

ENGADGET