Hello. john stultz wrote:
Interesting. Could you explain why the soft-timer interface doesn't<> suffice?
I'll try to explain why *I think* it doesn't suffice, please correct me if my assumptions are wrong.
There are two (bad) things about the PC-Speaker driver: 1. It needs the higher interrupt frequency. Since there seem to be no API to change the timer frequency at runtime, the driver does this itself. Now I have googled out the thread [PATCH] i386: Selectable Frequency of the Timer Interrupt but it doesn't look like it ended up with some patch applied, or where is it? 2. It needs its handler to be executed first in the chain. Otherwise the quality is poor because of the latency. My approach solves both problems by introducing the grabbing ability. This is a rather simple patch, and since it allows to do some cleanup, I though it could be usefull not only for the speaker driver. But if you can tell me how to achieve at least the point 1 (that is, speed up the timer at run-time quite arbitrary) without the kernel mods, then it would be a real salvation. Any hints/pointers are appreciated. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
