Re: PREEMPT_RT vs ADEOS: the numbers, part 1

From: Daniel Walker
Date: Sun Jun 12 2005 - 10:28:16 EST




On Sun, 12 Jun 2005, Ingo Molnar wrote:

> ok, this method should work fine. I suspect you increased the parport
> IRQ's priority to the maximum on the PREEMPT_RT kernel, correct? Was
> there any userspace thread on the target system (receiving the parport
> request and sending the reply), or was it all done in a kernelspace
> parport driver?

Whatever interrupt is used should be SA_NODELAY if you want maximum
response. The interrupt would need to be validated though , not to lock
mutexes.

Daniel

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/