[Intel-gfx] [PATCH i-g-t v3] tests/gem_reset_stats: Fix retrieval of hangcheck stats expectation

[Michel Thierry]

On 1/16/2018 12:56 PM, Antonio Argenziano wrote:
> The test expected IOCTL 'I915_GET_RESET_STATS' would return an error
> when not root. That is no longer true in the driver since commit
> 4c9c0d09741d ("drm/i915: Fix retrieval of hangcheck stats") and therefore
> the test was incorrectly failing.
> 
> v2:
> 	- Add the commit that changed the behaviour in the Driver to the
> 	  commit message. (Michel)
> 
> v3:
> 	- Reuse get_reset_count instead of implementing a new function.
> 	  (Michel)
> 
> Cc: Michel Thierry <michel.thierry at intel.com>
> Cc: Arkadiusz Hiler <arkadiusz.hiler at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Antonio Argenziano <antonio.argenziano at intel.com>
> ---
>   tests/gem_reset_stats.c | 14 ++++++--------
>   1 file changed, 6 insertions(+), 8 deletions(-)
> 
> diff --git a/tests/gem_reset_stats.c b/tests/gem_reset_stats.c
> index edc40767..17a9b648 100644
> --- a/tests/gem_reset_stats.c
> +++ b/tests/gem_reset_stats.c
> @@ -605,10 +605,7 @@ static void test_reset_count(const struct intel_execution_engine *e,
>   
>   		c2 = get_reset_count(fd, ctx);
>   
> -		if (ctx == 0)
> -			igt_assert(c2 == -EPERM);
> -		else
> -			igt_assert(c2 == 0);
> +		igt_assert(c2 == 0);
>   	}
>   
>   	igt_waitchildren();
> @@ -644,10 +641,11 @@ static void _check_param_ctx(const int fd, const int ctx, const cap_t cap)
>   	const uint32_t bad = rand() + 1;
>   
>   	if (ctx == 0) {
> -		if (cap == root)
> -			igt_assert_eq(_test_params(fd, ctx, 0, 0), 0);
> -		else
> -			igt_assert_eq(_test_params(fd, ctx, 0, 0), -EPERM);
> +		igt_assert_eq(_test_params(fd, ctx, 0, 0), 0);
> +
> +		if (cap != root) {
> +			igt_assert(get_reset_count(fd, ctx) == 0);
> +		}
>   	}
>   
>   	igt_assert_eq(_test_params(fd, ctx, 0, bad), -EINVAL);
> 

This matches the driver's current behavior, which is better than testing 
for something that is no longer true. Based on that,

Reviewed-by: Michel Thierry <michel.thierry at intel.com>