[ltt-dev] LTTng 0.160 for kernel 2.6.30.9
Mathieu Desnoyers
compudj at krystal.dyndns.org
Tue Oct 6 17:30:28 EDT 2009
Hi,
LTTng 0.160 supports kernel 2.6.30.9. Using CONFIG_TREE_RCU with kernel
2.6.30.x is recommended due to problems encountered with mainline
PREEMPT and CLASSIC RCU.
Even with TREE RCU, combining heavy busy looping of
ltt-armall/ltt-disarmall and cpu hotplug/hotunplug activity is not a
good idea. I fear the problem seems to come from RCU, but I have been
unable to find the culprit in a bounded amount of time.
Mathieu
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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