[PATCH v2] Support auxilliary vector components for cache geometries.

[Paul Clarke]

ping.

On 03/23/2017 12:25 PM, Paul Clarke wrote:
> Add support to getauxval() for new types to get L1, L2, L3 cache sizes,
> cache line sizes, and cache associativities.  The new types for
> getauxval() were added in the stream for Linux kernel v4.11 in commit
> 98a5f361b8625c6f4841d6ba013bbf0e80d08147.
>
> 	* elf/elf.h: Add auxvec identifiers from kernel
> 	arch/powerpc/include/uapi/asm/auxvec.h.
> ---
> v2: removed test case
>
>   elf/elf.h | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
>
> diff --git a/elf/elf.h b/elf/elf.h
> index 6d3b356..fff893d 100644
> --- a/elf/elf.h
> +++ b/elf/elf.h
> @@ -1170,6 +1170,18 @@ typedef struct
>   #define AT_L2_CACHESHAPE	36
>   #define AT_L3_CACHESHAPE	37
>
> +/* Shapes of the caches, with more room to describe them.
> +   *GEOMETRY are comprised of cache line size in bytes in the bottom 16 bits
> +   and the cache associativity in the next 16 bits.  */
> +#define AT_L1I_CACHESIZE	40
> +#define AT_L1I_CACHEGEOMETRY	41
> +#define AT_L1D_CACHESIZE	42
> +#define AT_L1D_CACHEGEOMETRY	43
> +#define AT_L2_CACHESIZE		44
> +#define AT_L2_CACHEGEOMETRY	45
> +#define AT_L3_CACHESIZE		46
> +#define AT_L3_CACHEGEOMETRY	47
> +
>   /* Note section contents.  Each entry in the note section begins with
>      a header of a fixed form.  */
>
>