Messages in this thread | | | Date | Fri, 5 Aug 2005 11:39:55 -0700 | From | Stephen Pollei <> | Subject | Re: [PATCH] kernel: use kcalloc instead kmalloc/memset |
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On 8/5/05, Christoph Lameter <christoph@lameter.com> wrote:
> Hmm. If we had kcmalloc then we may be able to add a zero bit to the slab > allocator. If we would obtain zeroed pages for the slab then we may skip > zeroing of individual entries. However, the cache warming effect of the > current zeroing is then not occurring. Not sure if this would make sense > but this is a possible optimization if we had kcmalloc.
Well there is kzalloc and kcalloc. I just thought a safe non-zeroing version would be nice. You could warm the cache with prefetch, but you'd need to profile the diferent cases to see what is worth doing and what isn't.
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