Re: [Xenomai-help] rtdm_iomap_to_user on PPC

2008-10-21 Thread Philippe Gerum
[EMAIL PROTECTED] wrote: > Hello Alexis, hello Philippe, > > thanks for your suggestions - the protection bits did the trick! Adding them > to xnarch_remap_io_page_range(...) in rtdm_mmap_buffer() solved the problem. > We already tried this few months ago using > > pgprot_val(vma->vm_page_prot)

[Xenomai-help] Reducing Kernel Mode Interrupt Latency

2008-10-21 Thread Henry Bausley
Is there any way the kernel mode interrupt handling maximum times can be decreased. I very much need to reduce my kernel mode interrupt latencies. I know my hardware is capable of better performance based upon measurements done with RT Linux. Below is our timing comparison, all times are the ma

Re: [Xenomai-help] Reducing Kernel Mode Interrupt Latency

2008-10-21 Thread Gilles Chanteperdrix
Henry Bausley wrote: > Is there any way the kernel mode interrupt handling maximum times can be > decreased. I very much need to reduce my kernel mode interrupt > latencies. I know my hardware is capable of better performance based > upon measurements done with RT Linux. Below is our timing comp

Re: [Xenomai-help] Reducing Kernel Mode Interrupt Latency

2008-10-21 Thread Philippe Gerum
Henry Bausley wrote: > Is there any way the kernel mode interrupt handling maximum times can be > decreased. I very much need to reduce my kernel mode interrupt > latencies. I know my hardware is capable of better performance based > upon measurements done with RT Linux. Below is our timing comp

Re: [Xenomai-help] Need some help getting past an

2008-10-21 Thread Gilles Chanteperdrix
ken barnett wrote: > Hope you can help. > > My configuration is as follows: > PXA25xx ADS card w/ NO PCI bridge > Linux-2.6.24.5 kernel > Xenomai 2.4.5 stable > > The Xenomai port to the kernel is as follows: > > ./prepare-kernel.sh linux=../../linux-2.6.24.5 > --adeos=adeos-ipipe-2.6.24-arm-1.9

Re: [Xenomai-help] Reducing Kernel Mode Interrupt Latency

2008-10-21 Thread Alexis Berlemont
Hi, > Henry Bausley wrote: > > Is there any way the kernel mode interrupt handling maximum times can be > > decreased. I very much need to reduce my kernel mode interrupt > > latencies. I know my hardware is capable of better performance based > > upon measurements done with RT Linux. Below is

Re: [Xenomai-help] Reducing Kernel Mode Interrupt Latency

2008-10-21 Thread Wolfgang Grandegger
Henry Bausley wrote: > Is there any way the kernel mode interrupt handling maximum times can be > decreased. I very much need to reduce my kernel mode interrupt > latencies. I know my hardware is capable of better performance based > upon measurements done with RT Linux. Below is our timing comp