[Intel-gfx] [PATCH i-g-t v2] tests/perf: skip config tests on older kernels

[Chris Wilson]

Quoting Lionel Landwerlin (2017-12-08 16:02:36)
> We mostly run tests on the most recent kernels but those are failing
> on < 4.14.
> 
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
>  tests/perf.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/tests/perf.c b/tests/perf.c
> index 969b8c74..a173680c 100644
> --- a/tests/perf.c
> +++ b/tests/perf.c
> @@ -3964,6 +3964,17 @@ static void i915_perf_remove_config(int fd, uint64_t config_id)
>                                 &config_id), 0);
>  }
>  
> +static bool has_i915_perf_userspace_config(int fd)
> +{
> +       uint64_t config = 0;
> +       int ret = igt_ioctl(fd, DRM_IOCTL_I915_PERF_REMOVE_CONFIG, &config);
> +       igt_assert_eq(ret, -1);
> +
> +       igt_debug("errno=%i\n", errno);

In later years "errno=21" without context is going to annoy you.
-Chris