Re: [PATCH,RFC] faster kmalloc lookup

From: Marcus Alanen (marcus@infa.abo.fi)
Date: Mon Oct 28 2002 - 08:18:07 EST


>Most kmalloc calls get constant size argument (usually
>sizeof(something)). So, if switch() is used in stead of loop (and
>kmalloc made inline), compiler would be able to optimize away
>cache_sizes[] selection completely. Attached (ugly) patch does this.

Perhaps a compile-time test to check if the argument is
a constant, and only in that case call your new kmalloc, otherwise
a non-inline kmalloc call? With your current patch, a non-constant
size argument to kmalloc means that the function is inlined anyway,
leading to unnecessary bloat in the resulting image.

Marcus

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