On 06/27/2011 08:31 AM, Adrien LEMAITRE wrote: > Hello, > > I raise a problem encountered and always present. Before on this configuration > : > > - linux kernel : 2.6.29.6 > - adeos patch : adeos-ipipe-2.6.29-arm-1.13-00.patch > - xenomai : 2.4.8 > - host linux distribution : ubuntu 10.04 (64 bits) > - compiler : gcc 4.2.1 (buildroot's generated toolchain) > > And it is always present with this configuration : > > - Linux kernel : 2.6.37 > - Adeos patch : adeos-ipipe-2.6.37-x86-2.9-00.patch > - Xenomai : 2.5.6 > - Host Linux distribution : Ubuntu 10.04 > - Compiler : gcc-4.4.3 > > Configuration of kernel: > > I used the default configuration of Ubunut 10.04 and i change this: > In "Power management and ACPI options" : > - deactivate ACPI
This is a bad idea. Only ACPI_PROCESSOR is problematic. See: http://www.xenomai.org/index.php/Configuring_x86_kernels > - deactivate CPU idle PM support > In "Device drivers/Input device support/Miscelaneous devices": > - deactivate PC Speaker support > In "Processor type and features": You should only need this if you have mis-configured your kernel. Again, see the "Processor type" paragraph in the Configuring_x86_kernels page. > - deactivate HPET_TIMER > - deactivate Enable -fstack-protector buffer overflow detection > (EXPERIMENTAL) > > > We encounter a problem in a particular situation. In the attached > source, when we change the value passed to rt_task_sleep (line 36), the > program never returns. > > This appears only with values greater or equal to 100000 (and maybe some > other values between 10000 and 100000) and only when we use > rt_task_sleep between the two rt_task_spawn calls. > > Is there something we've done wrong ? A problem with the kernel > configuration? Or a bug of Xenomai ? The real-time task are using 100% cpu time. You can not do that. A real-time task should suspend from time to time and let non real-time activities run. -- Gilles. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
