Messages in this thread | | | Date | Mon, 19 May 2008 16:11:12 -0500 | From | Scott Wood <> | Subject | Re: Oops with PREEMPT-RT on 2.6.25.4 |
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Rune Torgersen wrote: > Scott Wood wrote: >> You're recursively entering lock_timer_base, which does a >> spin_lock_irqsave(). Either interrupts are enabled when they should >> not be, or an interrupt was supposed to be threaded that isn't. > > Sort of figured. How do I figure out which one, and how to fix it?
Almost certainly the latter. Is the disk interrupt shared with any other interrupts, that are marked IRQF_NODELAY? The -rt patch doesn't seem to handle mixing the two well.
Oh, and just to be sure: you do have CONFIG_PREEMPT_RT turned on, and not just CONFIG_PREEMPT, right? The non-preempt-rt versions in the -rt patch don't look like they disable interrupts, though I may just be getting lost in a sea of underscores and ifdefs.
-Scott
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