Messages in this thread | | | Date | Wed, 25 Jul 2007 09:39:49 +0200 | From | Ingo Molnar <> | Subject | Re: TSC calibration sometimes not correct with RT patch. |
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* Henri Hunnekens <henrihunnekens@gmail.com> wrote:
> I've seen that the calbration of the TSC timer was not always done > correctly, which resulted in incorrect timers. > > I found out that local_irq_disable is used before the calibration is > started. However with the RT patch applied this does not mean that the > interrupts are disabled and therefore the calibration may fails when > it's interrupted by an interrupt. Correct me if I'm wrong.
local_irq_disable() still disables interrupts, even in PREEMPT_RT. So the problem should be elsewhere. Can you see similar problems on .22-rt too? The hrt code saw a number of updates there.
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