Re: loadavg problem with 2.6.26.8-rt16 on Atmel AT91SAM9260

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On Fri, 20 Feb 2009, Paul Gortmaker wrote:

> On Thu, Feb 19, 2009 at 7:11 AM, Thomas Pfaff <tpfaff@xxxxxxx> wrote:
> > While testing the 2.6.26.8-rt16 kernel on an AT91SAM9260-EK Arm9 board i noticed
> > a small regression to 2.6.24.7-rt27.
> >
> > The kernel compiles and boots fine but the average load when the cpu is idle
> > tends to be 1, it starts at 0 when the system boots and goes to 1 or above after
> > some time.
> >
> > All kernels have the at91 patches from http://maxim.org.za/sam9.html
> >
> > Following kernels are ok:
> >
> > 2.6.24.7-rt27
> > 2.6.26.8 without rt
> >
> > With the rt patch i have tested several combinations of the PREEMPT options:
> >
> > Without CONFIG_PREEMPT_HARDIRQ i get an oops on boot (see next mail).
> >
> > All other CONFIG_PREEMPT_[NONE|VOLUNTARY|DESKTOP|RT] options are working but
> > with the wrong average load.
> 
> Please test the following patch.  I think you should find it fixes the problem.

Thanks,

I've queued this up for 26-rt as well as added it to my rt git tree.

-- Steve

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