Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt

Arjan van de Ven
2005-07-14T07:42:56Z

> IOW, nothing ever sees any "variable frequency", and there's never any
> question about what the timer tick is: the timer tick is 2kHz as far as
> everybody is concerned. It's just that the ticks sometimes come in
> "bunches of 20".

btw we can hide all of this a lot nicer from just about the entire
kernel by reducing the usage of both HZ and jiffies in drivers/non
platform code. That isn't hard; msleep() is a good step forward there
already; the next step is a nicer api for add_timer/mod_timer that is
both relative and in miliseconds; with those 2 the majority of code that
has "knowledge" about this shrinks to near zero. Once we have that the
actual implementation of this in the background matters a whole lot
less.