user space device drivers

[richard -rw- weinberger]

On Tue, May 14, 2013 at 11:54 AM, Gergely Buday <gbuday at gmail.com> wrote:
> 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?

See VFIO and UIO.
Even the gpio sysfs interface allows you to catch interrupts.

> Is there one that affects the scheduler?

???

--
Thanks,
//richard