Re: [patch] tlb flush_data: replace per_cpu with an array

Andi Kleen
2009-01-14T08:53:52Z

> > It also would save some memory
> > on most distros out there (Ubuntu x86_64 has NR_CPUS=64 by default).

As pointed out several times this claim in the changelog is incorrect.
Please fix it.

A correct description would be:

- This patch wastes memory of one configured cache line for each CPU
on systems with less than 8 cores (e.g. 896 bytes on a 1 core system
with CONFIG_GENERIC_CPU/ cache line size 128)
It saves some memory on systems with more than 8 cores (one cache
line size for each core above 8)

-Andi