Messages in this thread | | | Date | Tue, 24 Nov 2009 13:45:22 +0100 | From | Michal Simek <> | Subject | Re: [PATCH, RESEND] microblaze: Fix level interrupt ACKing |
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Steven J. Magnani wrote: > On Fri, 2009-11-20 at 12:07 +0100, Michal Simek wrote: >> Hi Steve, >> >> steve@digidescorp.com wrote: >>> Level interrupts need to be ack'd in the unmask handler, as in powerpc. >>> Among other issues, this bug causes the system clock to appear to run at >>> double-speed. >> Can you send me any step-by-step manual how to demonstrate me this >> fault? If system clock runs at double-speed, then I should be able able >> to see that time is two times faster. Or do you mean different behavior? > > Unless there's a way to read jiffies_64 in userspace, the easiest way I > know of is to use the debugger. Stop the kernel soon after you boot it, > and read jiffies_64. Continue execution for some known amount of > wall-clock time, then stop the kernel again and recheck jiffies_64. > Without the patch, the number of elapsed jiffies is twice what you'd > expect based on HZ.
yes, I saw that behavior. Just thinking what caused that jiffies was two times faster.
But anyway. I added this patch to next branch.
Thanks, Michal
> >> Thanks, >> Michal > > Regards, > ------------------------------------------------------------------------ > Steven J. Magnani "I claim this network for MARS! > www.digidescorp.com Earthling, return my space modulator!" > > #include <standard.disclaimer> > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Michal Simek, Ing. (M.Eng) PetaLogix - Linux Solutions for a Reconfigurable World w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663
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