问题描述
我在这里读了答案：？这是一个很好的，但并不完全是我所需要的。
I've read the answer here: Trigger Kernel Interrupt Handler: How? and it's a good one, but not quite what I need.
我microbenchmarking的问候处理中断所RNG的功能，所以我需要的人工和可重复产生中断的好方法。例如，我可以重定向到的东西会产生300中断或类似的东西PROCFS接口。
I'm microbenchmarking the RNG functions in regards to processing interrupts, so I need a good way to artificially and repeatably generate interrupts. For example, I could redirect something into a Procfs interface that generates 300 interrupts or something like that.
这是在产生一个中断内核中运行某种功能容易吗？
Is it as easy as running some kind of function in the kernel that generates an interrupt?
是否有某种中断实际上并没有做任何东西，而是通过整个中断处理程序路径还行？我知道我可以只输入键或类似的东西，但是，这不是真正的可重复和可编写脚本用于研究目的。
Is there some kind of interrupt that does not actually do "Anything", but still goes through the entire interrupt handler path? I realize I could just type keys or something like that but that's not really repeatable and scriptable for research purposes.
我与x86架构的工作。
I'm working with the x86 architecture.
推荐答案
刚开始高分辨率定时器：
Just start a high-resolution timer:
struct hrtimer timer;
hrtimer_init(&timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
timer.function = my_little_timer;
hrtimer_start(&timer, ktime_set(0, 500000000 /* ns */), HRTIMER_MODE_REL);
...
hrtimer_cancel(&timer);
...
enum hrtimer_restart my_little_timer(struct hrtimer *timer)
{
// either:
hrtimer_forward_now(timer, ktime_set(...));
return HRTIMER_RESTART;
// or:
return HRTIMER_NORESTART;
}
这篇关于人们会如何去生成＆QUOT;人工＆QUOT;在中断Linux内核？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！