user space device drivers

[Gergely Buday]

Prabhu nath wrote:

> But if the device has to generate an interrupt on the reception of the data
> then it is best for the driver code to be in the kernel space waiting for
> the data, rather than in the user space because there is no efficient
> mechanism till now for the control to be transferred to the waiting user
> space code on the reception of the interrupt.

What are the curently available mechanisms for an interrupt to
propagate into user space?

Is there one that affects the scheduler?

- Gergely