Re: [patch] smptimers, old BH removal, tq-cleanup, 2.5.39

David S. Miller
2002-10-01T04:20:20Z

From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 1 Oct 2002 05:51:45 +0200 (CEST)

- /*
- * ok, Intel has some smart code in their APIC that knows
- * if a CPU was in 'hlt' lowpower mode, and this increases
- * its APIC arbitration priority. To avoid the external timer
- * IRQ APIC event being in synchron with the APIC clock we
- * introduce an interrupt skew to spread out timer events.
- *
- * The number of slices within a 'big' timeslice is NR_CPUS+1
- */
-

I did some thinking, and I don't understand how this old code
can be legal. Doesn't this make do_gettimeofday() inaccurate?

I must be missing something.