On Mon, 2 Oct 2017 18:35:24 -0500
Kim Phillips [off-list ref] wrote:

On Mon, 2 Oct 2017 13:49:30 -0300
Arnaldo Carvalho de Melo [off-list ref] wrote:

quoted

I'm all for more informative messages, and if you guys agree on how to
provide the info in a way that combined with logic in evsel.c, I'd say
do what Will suggested, post a patch series and include usage examples,
before and after.

I'll figure out how to get the PMU in evsel.c's strerror fn, and give it
another shot.  I don't think it'll be a big problem for the SPE driver
itself, it's just some of the other drivers have long lists of reasons
to return -EXXXX, and I don't think evsel.c's strerror fn should be
able to handle all that.

See this example for the arm-ccn driver:

http://lists.infradead.org/pipermail/linux-arm-kernel/2017-October/538924.html

Please follow up on that thread.

Thanks,

Kim