In message <[EMAIL PROTECTED]> you wrote:
> Michael Neuling wrote:
> >> I'd also request for you to add a cpu_scaled_run_real_total for use
> >> by delay accounting. cpu_scaled_run_real_total should be similar in
> >> functionality to cpu_run_real_total.
> >
> > Will do. Should I add cpu_scaled_run_real_total to the end of the
> > struct taskstat, or next to cpu_run_real_total?
> >
>
> Please add it to the end, that helps maintain binary compatibility
> across all versions of taskstats.
OK
>
> >>> /* Note: this timer irq context must be accounted for as well. */
> >>> - if (user_tick)
> >>> + if (user_tick) {
> >>> account_user_time(p, jiffies_to_cputime(1));
> >>> - else
> >>> + account_user_time_scaled(p, jiffies_to_cputime(1));
> >>> + } else {
> >>> account_system_time(p, HARDIRQ_OFFSET, jiffies_to_cputime(1));
> >>> + account_system_time_scaled(p, jiffies_to_cputime(1));
> >>> + }
> >> I am a little confused here, scaled accounting and regular accounting
> >> go hand in hand?
> >
> > We need to account for scaled and normal time in this generic code.
> > All other calls to account_(user|system)_time are in arch code.
> >
>
> So the assumption here is that we ran at full frequency during
> this time, is my understanding correct?
Yes.
I guess we could keep a per CPU last scaling factor for this case
(similar to what we are storing in the POWERPC paca)
Mikey
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