Messages in this thread | | | Date | Fri, 17 Jun 2011 13:45:24 +1000 (EST) | From | Finn Thain <> | Subject | Re: m68k: Convert to genirq (WIP) |
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On Thu, 16 Jun 2011, Geert Uytterhoeven wrote:
> On Wed, Jun 15, 2011 at 21:44, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > > On Sat, Jun 4, 2011 at 19:56, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > >> On Sat, May 28, 2011 at 20:32, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > >> > >> It works on Amiga now, too. It can still use some optimizations in > >> the irq_{enable,disable,ack,mask,mask_ack,unmask} area, as my > >> BogoMIPS rating dropped by ca 2.5% and is now under 16, for a 25 MHz > >> 68040. > > > > Seems like everything (Atari/ARAnyM and Amiga) still works when using > > handle_simple_irq instead of handle_level_irq. As a bonus, BogoMIPS is > > above 16 again.
Your bogomips benchmark would be the best-case penalty, right?
Have you tried say, sending a ping flood to measure throughput and latency?
> > With handle_simple_irq(), we no longer need to define irq_{,un}mask() > methods in our irq_chips. Hence the "old" m68k platform interrupt code > seems to be much closer to genirq than I thought... > > Does this make sense?
If the simple irq model gets us closer to the goal and doesn't kill performance then it makes sense to me.
Finn
> > Gr{oetje,eeting}s, > > Geert >
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