Andi Kleen <[email protected]> wrote:
> At least Linus' traditional argument against this is that it's better
> to open code these (do_div) so that it's clear to the coder that they
> are really costly.
do_div() is not a full replacement for __udivdi3(), __umoddi3() or
__udivmoddi4(), though I suspect we don't need divisor >= 2^32 anywhere atm.
There are places where the compiler emits these that aren't entirely obvious,
one of which IIRC is in ext2 inode allocation.
David
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