Messages in this thread | | | Date | Tue, 19 Oct 2004 11:01:28 -0500 | From | "K.R. Foley" <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6 |
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Ingo Molnar wrote: > * Rui Nuno Capela <rncbc@rncbc.org> wrote: > > >>OK. After some incremental configurations, I've isolated that those >>oops(es) only occurs if PREEMPT_TIMING and/or LATENCY_TRACE areset >>(Y). My first suspect was that newest RWSEM_DEADLOCK_DETECT, but it >>wasn't the case. >> >>So something has broken on that non-preemptible critical section >>timing stuff since U4. >> >>Hasn't anybody else stumbled on this? > > > i'm using it myself and havent seen the problem yet. Could you send me > the latest .configs, the working and the broken one too? I'll try to > reprodue it (or maybe someone else with a serial console sees it too). > > Ingo >
I am seeing something similar here with both U5 and U6 on both of my SMP systems (actually I haven't gotten to try U6 on my SMP system at home yet.) On my SMP system here (dual Xeon) I get a handful of traces during the boot and then the last thing I see is a trace that has something to do with parport, but the key MIGHT be that it always seems to crap out when I get traces for 3-level deep critical section nesting. I will try to capture the trace the old-fashioned way when I get a chance shortly.
I do have U5 booted on my UP system at home though.
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