Messages in this thread | | | Date | Wed, 14 Jan 2009 10:08:11 +0100 | From | Andi Kleen <> | Subject | Re: [patch] tlb flush_data: replace per_cpu with an array |
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> > 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
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