On Monday 24 February 2014 08:43:27 quikcj...@gmail.com wrote: > No, the PRUSS unit is not a solution because support for it is even worse. > It's not a solution to program in assembler. If we had PREEMPT_RT we could > use the full Linux functionality. That's the way to go. There is a C compiler which is in beta, and can be requested. There have been references to it on this list.
David > > Am Freitag, 21. Februar 2014 11:03:24 UTC+1 schrieb David Goodenough: > > On Friday 21 February 2014 00:20:39 quik...@gmail.com <javascript:>wrote: > > > I am trying to figure out how to create a kernel for the BBB that > > > > supports > > > > > PREEMPT_RT. It's kind of strange that the BBB's default kernel does not > > > even have PREEMPT activated. Such a board doesn't fit to many embedded > > > applications where we need at least some kind of determinism. It is even > > > worse, that nobody seems to care about this problem. Contrary to that, > > > > the > > > > > Raspberry PI's standard kernel has PREEMPT activacted from the very > > > beginning. > > > > > > I have tested Robert Nelsons kernel 3.8.13-r9 > > > (https://github.com/beagleboard/kernel/tree/3.8-rt). It does not have > > > PREEMPT_RT activated by default. When doing so, it does not boot. But > > > activating PREEMPT does work. However, development of this branch has > > > stopped several months ago. The official source for RT Linux (3.8.13) > > > > has > > > > > evolved since then. Meanwhile there's an rt17 patch set > > > (https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/). Did anybody > > > give this a try? Does it work with the BBB? > > > > Surely the point of the Beaglebone, or rather its processor, is that you > > do not need to put the time critical bits on the main processor, you put > > them in the PRUSS processors. > > > > David -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
