Messages in this thread | | | Date | Wed, 05 Jul 2000 12:53:08 +1000 | From | Andrew Morton <> | Subject | Re: PS/2 mouse latency was Re: [linux-audio-dev] Re: [DATAPOINT] kernels and latencies |
| |
Andi Kleen wrote: > > The PS/2 mouse interface has an incestuous relation to the keyboard > controller; they use the same registers. Keyboard controller is writen > to regularly in the keyboard interrupt when you press a key. Both > have to be serialized.
Hi, Andi.
Writing to the k/b is a simple outb() and yes, the statefulness of the host<->mouse-or-kb protocol presumably requires the higher level serialisation.
But my question was: how often are aux_write_dev() and aux_write_ack() actually called?
From my reading, it's only when:
- The system is booted - /dev/psaux is opened - /dev/psaux is written to
If these are sufficiently rare events, we can shrug and move on, no?
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |