Messages in this thread | | | Date | Thu, 7 Jul 2005 13:02:05 -0700 (PDT) | From | William Weston <> | Subject | Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.51-12 |
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On Thu, 7 Jul 2005, Ingo Molnar wrote:
> is this inheritance perpetual? It is normal for some tasks to be boosted > momentarily, but if the condition remains even after jackd has exited, > it's clearly an anomaly. (lets call it "RT priority leakage".) Priority > leakage on SMP was fixed recently, but there could be other bugs > remaining. > > There's priority-leakage debugging code in the -RT kernel, which is > activated if you enable CONFIG_DEBUG_PREEMPT. This debugging code, if > triggered, should produce 'BUG: comm/123 leaked RT prio 123 (123)?" type > of messages. But ... due to a bug it would not print out anything but > would lock up hard if it detects the condition (and if > RT_DEADLOCK_DETECT is enabled). I have fixed this reporting bug in the > -51-08 kernel.
-51-12 is still exhibhiting the RT priority leakage, but isn't producing any BUG messages.
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