* [Xenomai-help] Broken prio-inheritance of RTDM mutexes
@ 2006-05-11 9:43 Jan Kiszka
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From: Jan Kiszka @ 2006-05-11 9:43 UTC (permalink / raw)
To: xenomai-help
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Hi,
shame on me: we had a nasty bug in the RTDM mutex code for quite a long
time (actually, in any Xenomai version).
The priority inheritance did not work in case such a mutex was taken
without prior contention and a higher priority task then tried to
acquire it. Scenario: task 1 takes lock A without having to wait, then
it gets preempted by task 2 which also tries to take lock A, task 1
should get booted to task 2's priority, and this was not the case so far.
This bug was fixed in revision #1070 for the 2.1.x branch and #1071 for
trunk. Updating your local Xenomai code base it recommended in case you
depend on PI-characteristics of RTDM mutexes.
Jan
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2006-05-11 9:43 [Xenomai-help] Broken prio-inheritance of RTDM mutexes Jan Kiszka
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