[parisc-linux] sched_clock implementation

[Helge Deller]

On Sunday 21 September 2003 02:04, Grant Grundler wrote:
> On Sat, Sep 20, 2003 at 06:02:10PM +0000, Joel Soete wrote:
> > a quick look into paxx.pdf which about CR16 speak of "peak instruction
> > rate" but do not define anywhere?
> > I presume that is the cpu clock but would like somebody confirm.
>
> Read about "Interval Timer" (cr16) in the PA 2.0 Arch book.
> PDC provides the exact rate that CR16 is changing.
> Looks like PDC_TOD_ITIMER is the call but I'm not sure offhand.
> In any case, I've only seen it used as CPU cycle counter.
> (ie 1:1 with CPU clock).

Hi Joel,

I think we have the rate in the variable "boot_cpu_data.cpu_hz" (see 
arch/parisc/kernel/processor.c) already.

Helge