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@xxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
> 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
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