Re: [PATCH 1/12] random pt4: Create new rol32/ror32 bitops

[Andi Kleen]

On Sat, Jan 22, 2005 at 09:10:40PM -0500, Chuck Ebbert wrote:
> On Fri, 21 Jan 2005 at 15:41:06 -0600 Matt Mackall wrote:
> 
> > Add rol32 and ror32 bitops to bitops.h
> 
> Can you test this patch on top of yours?  I did it on 2.6.10-ac10 but it
> should apply OK.  Compile tested and booted, but only random.c is using it
> in my kernel.

Does random really use variable rotates? For constant rotates 
gcc detects the usual C idiom and turns it transparently into
the right machine instruction.

If that's the case I would use it because it'll avoid some messy 
code everywhere.

-Andi
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