Messages in this thread | | | Date | Tue, 9 Nov 2010 14:43:55 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH] Greatly improve TSC calibration using a delayed workqueue |
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> Interesting. Thanks for pointing that out! Couldn't I just start the > calibration after fs_initcall (when the hpet_late_init runs) to avoid > this as well?
Yes that probably would work. Or use the barrier infrastructure in workqueue.c
> > > Another issue may be races against suspend, but that may be too > > obscure. > > Yea, that seems fairly obscure. Basically you'd have to suspend in the > first second as the system came up. In that case the code will throw out > any calibration refinement that's over 1% off of the initial boot > calibration, so I think this is ok trade off.
It may happen with opportunistic suspend if the system boots very fast.
-Andi -- ak@linux.intel.com -- Speaking for myself only.
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