我有一个关于linux设备驱动程序的一般性问题。更常见的情况是,我弄不清楚在linux设备驱动程序中允许或不允许执行哪些操作?
是否有任何规则或查找列表可遵循?
例如,下面的例子是不允许的?
msleep(1000);
al = kmallock(sizeof(val));
printk(KERN_ALERT "faild to print\n";
ret = adc_get_val()*0.001;
我读了一些相关的文章:
(1)罗伯特·洛夫:
You cannot sleep in an interrupt handler because interrupts do not have a backing
process context, and thus there is nothing to reschedule back into. In other
words, interrupt handlers are not associated with a task, so there is nothing to
"put to sleep" and (more i