* What clockevents are needed to boot properly?
@ 2021-03-08 0:10 Theodore Dubois
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From: Theodore Dubois @ 2021-03-08 0:10 UTC (permalink / raw)
To: linux-kernel; +Cc: tglx
I'm playing around with a new kernel arch and running into problems with properly configuring the clockevents, especially with SMP. Without SMP you can easily set up a clockevents masked to cpu 0, and this seems to work fine. But on SMP this fails silently: high-res timers created on cpu != 0 never fire.
The obvious next thing to try would be to set the mask of the clockevents to cpu_possible_mask, but this silently fails as well: the clockevents just doesn't get used at all. There seem to be a lot of drivers in the tree that do this, I'm not sure why it works for those.
Do you have to register a new clockevents for each CPU? I can't find a lot of information on this.
~Theodore
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2021-03-08 0:10 What clockevents are needed to boot properly? Theodore Dubois
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