[PATCH] powerpc: fix sysconf support for cache geometries

[Richard Henderson]

On 06/15/2017 01:45 PM, Paul Clarke wrote:
> Commit cdfbe5037f2f67bf5f560b73732b69d0fabe2314 added sysconf support
> for cache geometries on powerpc, but mishandled errno.  For valid input
> parameters, sysconf() should not set errno.
> 
> 2017-06-15  Paul A. Clarke<pc@us.ibm.com>
> 
> 	* sysdeps/unix/sysv/linux/powerpc/sysconf.c: Remove references
> 	to errno, and simplify remaining related code.
> ---
>   sysdeps/unix/sysv/linux/powerpc/sysconf.c | 37 +++++++------------------------
>   1 file changed, 8 insertions(+), 29 deletions(-)

LGTM.

Any thoughts on falling back to AT_*CACHEBSIZE for _SC_LEVEL1_*CACHE_LINESIZE 
for older kernels where AT_L1*_CACHEGEOMETRY is not present?


r~