Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH] x86_64: Avoid NMI Watchdog and/or long wait in setup_APIC_timer | Date | Thu, 9 Aug 2007 02:50:43 +0200 |
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> > I was thinking along the same lines as well, but I really didn't know how > important all that code was for waiting for the next irq slice. I'm not time > expert, but I would imagine we would resynchronize correctly in the future after > this code path?
The idea is to just have the apic timers roughly at the same times + some fixed offset as the main timer. Otherwise e.g. add_timer could jitter up to a jiffie regarding the jiffies counter. But long term drift will destroy the synchronization anyways.
I guess i'll send it in anyways for .23; it would be too risky to change anything radical in this area that late. Then later it can be revisited.
-Andi
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