Our first victim!! :-) On Tue, 2005-04-05 at 20:06 +0100, Rui Nuno Capela wrote: > > > I'm having plenty of this on boot, on my SMP/HT desktop (P4/x86), while > running RT-V0.7.44-01 (SMP+PREEMPT_RT): > > BUG: kstopmachine:xxxx RT task yield()-ing! > > See sample dmesg and .config on attach. > > OTOH, on my laptop (P4/UP), all seems to be clear fine. >
The kstopmachine is only run on SMP environments, so it won't show up on your UP machine. > Is this something to be affraid of? :) > If your box is still running, then no. But it's now a chore to remove the yield from this algorithm, since yields have a possibility to deadlock the system. Although in this particular case, it may not be a problem, since the threads that are being waited on are created for other CPUs. But I haven't looked too much into what stop_machine is doing so I can very well be wrong. Thank you for reporting it, we want to weed out all the yields that a RT task may call. -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
