Re: [PATCH] Using Intel CRC32 instruction to accelerate CRC32c algorithm by new crypto API.

Sebastian Siewior
2008-08-04T10:26:21Z

* David Woodhouse | 2008-08-04 11:12:05 [+0100]:

>On Mon, 2008-08-04 at 05:35 -0400, Austin Zhang wrote:
>> +u32 __pure crc32c_intel_le_hw(u32 crc, unsigned char const *p, size_t
>> len)
>> +{
>> + unsigned int iquotient = len / SCALE_F;
>> + unsigned int iremainder = len % SCALE_F;
>> +#ifdef CONFIG_X86_64
>> + u64 *ptmp = (u64 *)p;
>> +#else
>> + u32 *ptmp = (u32 *)p;
>> +#endif
>
>You could perhaps just use 'unsigned long' here, to avoid the ifdef.
>
>And it would be nice if we could make libcrc32c use this too, rather
>than just the 'crypto' users.

I'm not sure if I remeber correctly but I thing Herbert was planning to
convert all users over to the crypto API to avoid compile time
dependency.

Sebastian