Re: [PATCH] x86: Change x86 to use generic find_next_bit

[Andi Kleen]

Alexander van Heukelum <heukelum@xxxxxxxxxxxxx> writes:
> 
> Benchmark using: gcc -fomit-frame-pointer -Os. For each bitmap size 
> 1...512, for each possible bitmap with one bit set, for each possible 
> offset: find the position of the first bit starting at offset. If you 
> follow ;). Times include setup of the bitmap and checking of the 
> results.

BTW another comment: it would be far more sense if you did 
some profiling on what bitmap sizes a real kernel uses
(should be easy enough with some systemtap) and benchmarked
only that.

I doubt 1 bit bitmap searches are common for example ...

-Andi
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