Re: [RFC] Optimize swab operations on mips_r2 cpu

["Kevin D. Kissell" <kevink@mips.com>]

Franck wrote:
> Hi Ralf
> 
> 2006/1/25, Ralf Baechle <ralf@linux-mips.org>:
>> On Wed, Jan 25, 2006 at 10:36:46AM +0100, Franck wrote:
>>
>>> Here is a little patch to optimize swab operations by using "wsbh"
>>> instruction available on mips revision 2 cpus. I do not know what
>>> condition I should use to compile this only for mips r2 cpu though.
>>>
>>> Comments ?
>> Looks good aside of the one issue you've already raised yourself:
>>
>>> +/* FIXME: MIPS_R2 only */
> 
> I was actually asking for advices :)
> 
> I can see only two simple ways to do that:
> (a) we can define a couple of new macro ie CONFIG_MIPS32_ISET_R[12]
> that can be set depending on the selected CPU;
> (b) define a new macro CONFIG_CPU_HAS_WSBH;

Don't we already have CONFIG_CPU_MIPS32R2?