On Fri, 23 Sep 2005, Andrew Morton wrote:
> I'd question the usefulness of this. It adds more code to a fastpath
> (kmem_cache_alloc) so as to speed up a slowpath (kzalloc()) which is
> already slow due to its memset.
It tries to unify both and make usage consistent over the allocator
functions in slab.c. kzalloc essentially vanishes.
> It makes my kernel a bit fatter too - 150-odd bytes of text for some
> reason.
Yes the inline function doubles the code generated for obj_checkout
because it occurs in __cache_alloc and __cache_alloc_node.
__cache_alloc is also an inline and is expanded three times.
Removing the inline from __cache_alloc could reduced code size.
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