Am Dienstag, 2. Januar 2007 10:53 schrieb Philippe Gerum: > On Tue, 2007-01-02 at 09:23 +0100, M. Koehrer wrote: > > Happy new year to all! > > > > Back in the office, I tried out the patches from Chilles and Philippe. > > And yes, it is working now! No crash! > > Using these patches, I can now call a system() call out of a rea ltime > > task that is followed by a rt_task_sleep() and a printf() without crash > > on a 2.6.19 kernel. > > > > Thanks for the support! > > > > Best regards > > > > Mathias > > > > > > here comes a workaround for the COW issue on Linux 2.6.19. The patch > > > > relies on a new VM_NOCOW flag which should be set for real-time > > > > application if you use Xenomai trunk. > > > > > > > > It would be nice if you could test it. > > > > > > You will additionally need to apply this patch to the Xenomai tree in > > > order to activate the COW-disable feature: > > Great, thanks. Niklaus, could you check the vm-nocow patch for 2.6.14 on > the ppc board (the hcu, IIRC) that exhibited strange faults in > user-space while running the latency test, especially when enabling the > nucleus debug option (the one which also used to cause secondary switch > warnings being sent by Xenomai to the kernel log)? TIA, I will check it, but I must first upgrade my board specific patch from Linux 2.6.17 to 2.6.19. Don't know how much time it will take me.
Best regards -- Niklaus Giger _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
