Re: [PATCH, take 2] Speedup divides by cpu_power in scheduler

* Eric Dumazet <[email protected]> wrote:

> Ingo suggested to rename cpu_power to __cpu_power to make clear it 
> should not be modified without changing its reciprocal value too.

thanks,

Acked-by: Ingo Molnar <[email protected]>

> I did not convert the divide in cpu_avg_load_per_task(), because 
> tracking nr_running changes may be not worth it ? We could use a 
> static table of 32 reciprocal values but it would add a conditional 
> branch and table lookup.

not worth it i think. Lets wait for it to show up in an oprofile? (if 
ever)

	Ingo
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• References:
  • [Patch 1/2] cciss: fix for 2TB support
    • From: "Mike Miller (OS Dev)" <[email protected]>
  • Re: [Patch 1/2] cciss: fix for 2TB support
    • From: Andrew Morton <[email protected]>
  • [PATCH] Speedup divides by cpu_power in scheduler
    • From: Eric Dumazet <[email protected]>
  • [PATCH, take 2] Speedup divides by cpu_power in scheduler
    • From: Eric Dumazet <[email protected]>

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