[ECOS] Re: idle_thread_loops with arm-eabi-gcc

John Dallaway john@dallaway.org.uk
Wed Aug 26 07:02:00 GMT 2009


Hi Christophe

Andrew Lunn wrote:

> 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.

Did Andrew's suggestion resolve this problem?

John Dallaway

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