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Re: [PATCH] powerpc: fix sysconf support for cache geometries

On 16/06/2017 09:00, Paul Clarke wrote:
> On 06/15/2017 03:55 PM, Adhemerval Zanella wrote:
>> On 15/06/2017 17:45, 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.
>> Do we have a testcase for it? If not I think we should add it.
> We don't.  There are three obvious test cases for sysconf:
> - ./nptl/tst-sysconf.c: ignores errno
> - ./posix/tst-sysconf.c:  ignores errno
> - ./sysdeps/unix/sysv/linux/powerpc/tst-sysconf.c
>   Ironically (given the need for the subject patch), this correctly tests for errno changes but only for the _SC_LEVEL*, and only for powerpc.
> PC

I think you might have a staged change in your repo, I do not see
the powerpc specific one in master.  In any case, I think it worth
to add some errno testing on nptl and posix tests (maybe even
incorporate nptl on posix) and add powerpc one (be aware to avoid
add a testcase with same name in same folder, as this powerpc seems
to be doing).

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