[ECOS] idle_thread_loops with arm-eabi-gcc

Andrew Lunn andrew@lunn.ch
Thu Aug 13 12:29:00 GMT 2009


On Wed, Aug 12, 2009 at 09:08:54AM +0200, Heidet, Christophe wrote:
> Hello,
> 
> I have a strange problem with arm-eabi-gcc. 
> I use the version from ecos website : arm-eabi-gcc V4.3.2
> If I build with the -O2 optimization flag, I can't use the cpuload
> package, because the "idle_thread_loops" never increase ...
> If I decrease the optimization (to -O0) I have no problem and the
> cpuload works very well.
> 
> Does anybody have a solution ? instead of decrease the optimization ...

Try making idle_thread_loops volatile. That might stop the compiler
from optimizing out the increment.

     Andrew

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