[igt-dev] [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform

[igt-dev] [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform

[Mika Kahola]

There was an error in commit 0ab05a51a059 on computing number of maximum
supported planes. This patch proposes a fix to this commit by first computing
the number of planes that are within platform's bandwidth requirements, resets
the display and then executes the actual testing.

v2: Remove uninitialized variable (Stan)

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
---
 tests/kms_concurrent.c | 102 ++++++++++++++++++-----------------------
 1 file changed, 45 insertions(+), 57 deletions(-)

diff --git a/tests/kms_concurrent.c b/tests/kms_concurrent.c
index 61137139..1a7c12fc 100644
--- a/tests/kms_concurrent.c
+++ b/tests/kms_concurrent.c
@@ -195,6 +195,25 @@ prepare_planes(data_t *data, enum pipe pipe, int max_planes,
 	igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
 }
 
+static int test_bandwidth(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+
+	int n_planes = data->display.pipes[pipe].n_planes;
+	int i;
+	int ret;
+
+	igt_pipe_refresh(&data->display, pipe, true);
+
+	for (i = 1; i <= n_planes; i++) {
+		prepare_planes(data, pipe, i, output);
+		ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC | DRM_MODE_ATOMIC_TEST_ONLY);
+		if (ret != 0)
+			break;
+	}
+
+	return i - 1;
+}
+
 static void
 test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
 				igt_output_t *output)
@@ -208,7 +227,7 @@ test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
 	i = 0;
 	while (i < iterations || loop_forever) {
 		prepare_planes(data, pipe, max_planes, output);
-		igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
+		igt_display_commit2(&data->display, COMMIT_ATOMIC);
 		i++;
 	}
 }
@@ -241,44 +260,17 @@ get_lowres_mode(data_t *data, const drmModeModeInfo *mode_default,
 	return mode;
 }
 
-static int
+static void
 test_resolution_with_output(data_t *data, enum pipe pipe, igt_output_t *output)
 {
 	const drmModeModeInfo *mode_hi, *mode_lo;
 	int iterations = opt.iterations < 1 ? 1 : opt.iterations;
 	bool loop_forever = opt.iterations == LOOP_FOREVER ? true : false;
-	int i, c, ret;
-	int max_planes = data->display.pipes[pipe].n_planes;
-	igt_plane_t *primary;
-	drmModeModeInfo *mode;
+	int i;
 
 	i = 0;
 	while (i < iterations || loop_forever) {
 		igt_output_set_pipe(output, pipe);
-		for (c = 0; c < max_planes; c++) {
-			igt_plane_t *plane = igt_output_get_plane(output, c);
-
-			if (plane->type != DRM_PLANE_TYPE_PRIMARY)
-				continue;
-			primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
-			data->plane[primary->index] = primary;
-			mode = igt_output_get_mode(output);
-			igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
-						DRM_FORMAT_XRGB8888,
-						LOCAL_I915_FORMAT_MOD_X_TILED,
-						0.0f, 0.0f, 1.0f,
-						&data->fb[primary->index]);
-			igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
-			ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
-			if (ret) {
-				igt_plane_set_fb(data->plane[i], NULL);
-				igt_remove_fb(data->drm_fd, &data->fb[i]);
-				data->plane[i] = NULL;
-				break;
-			}
-		}
-		max_planes = c;
-		igt_assert_lt(0, max_planes);
 
 		mode_hi = igt_output_get_mode(output);
 		mode_lo = get_lowres_mode(data, mode_hi, output);
@@ -293,48 +285,35 @@ test_resolution_with_output(data_t *data, enum pipe pipe, igt_output_t *output)
 
 		i++;
 	}
-
-	return max_planes;
 }
 
 static void
-run_test(data_t *data, enum pipe pipe, igt_output_t *output)
+run_test(data_t *data, enum pipe pipe, int max_planes, igt_output_t *output)
 {
-	int connected_outs;
-	int n_planes = data->display.pipes[pipe].n_planes;
-	int max_planes = n_planes;
-
 	if (!opt.user_seed)
 		opt.seed = time(NULL);
 
-	connected_outs = 0;
-	for_each_valid_output_on_pipe(&data->display, pipe, output) {
-		igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
-			 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
-
-		test_init(data, pipe, n_planes, output);
-		max_planes = test_resolution_with_output(data, pipe, output);
-
-		igt_fork(child, 1) {
-			test_plane_position_with_output(data, pipe, max_planes, output);
-		}
+	igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
+		 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
 
-		test_resolution_with_output(data, pipe, output);
+	test_init(data, pipe, max_planes, output);
+	igt_fork(child, 1) {
+		test_plane_position_with_output(data, pipe, max_planes, output);
+	}
 
-		igt_waitchildren();
+	test_resolution_with_output(data, pipe, output);
 
-		test_fini(data, pipe, n_planes, output);
+	igt_waitchildren();
 
-		connected_outs++;
-	}
+	test_fini(data, pipe, max_planes, output);
 
-	igt_skip_on(connected_outs == 0);
 }
 
 static void
 run_tests_for_pipe(data_t *data, enum pipe pipe)
 {
 	igt_output_t *output;
+	int max_planes;
 
 	igt_fixture {
 		int valid_tests = 0;
@@ -348,9 +327,18 @@ run_tests_for_pipe(data_t *data, enum pipe pipe)
 		igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
 	}
 
-	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe))
-		for_each_valid_output_on_pipe(&data->display, pipe, output)
-			run_test(data, pipe, output);
+	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe)) {
+		for_each_valid_output_on_pipe(&data->display, pipe, output) {
+			int n_planes = data->display.pipes[pipe].n_planes;
+
+			test_init(data, pipe, n_planes, output);
+			max_planes = test_bandwidth(data, pipe, output);
+			test_fini(data, pipe, n_planes, output);
+
+			igt_display_reset(&data->display);
+			run_test(data, pipe, max_planes, output);
+		}
+	}
 }
 
 static int opt_handler(int option, int option_index, void *input)
-- 
2.20.1

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Re: [igt-dev] [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform

[Kahola, Mika]

-----Original Message-----
From: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> 
Sent: Thursday, March 26, 2020 1:22 PM
To: Kahola, Mika <mika.kahola@intel.com>; igt-dev@lists.freedesktop
Cc: Lisovskiy, Stanislav <stanislav.lisovskiy@intel.com>
Subject: Re: [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform

On 26.3.2020 12.59, Mika Kahola wrote:
> There was an error in commit 0ab05a51a059 on computing number of 
> maximum supported planes. This patch proposes a fix to this commit by 
> first computing the number of planes that are within platform's 
> bandwidth requirements, resets the display and then executes the actual testing.
> 
> v2: Remove uninitialized variable (Stan)
> 
> Signed-off-by: Mika Kahola <mika.kahola@intel.com>
> ---
>   tests/kms_concurrent.c | 102 ++++++++++++++++++-----------------------
>   1 file changed, 45 insertions(+), 57 deletions(-)
> 
> diff --git a/tests/kms_concurrent.c b/tests/kms_concurrent.c index 
> 61137139..1a7c12fc 100644
> --- a/tests/kms_concurrent.c
> +++ b/tests/kms_concurrent.c
> @@ -195,6 +195,25 @@ prepare_planes(data_t *data, enum pipe pipe, int max_planes,
>   	igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
>   }
>   
> +static int test_bandwidth(data_t *data, enum pipe pipe, igt_output_t 
> +*output) {
> +
> +	int n_planes = data->display.pipes[pipe].n_planes;
> +	int i;
> +	int ret;
> +
> +	igt_pipe_refresh(&data->display, pipe, true);
> +
> +	for (i = 1; i <= n_planes; i++) {
> +		prepare_planes(data, pipe, i, output);

Does this leak memory prepare_planes() successfully allocated?

You mean, we should free the dynamically allocated memory inside prepare_planes?

> +		ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC | DRM_MODE_ATOMIC_TEST_ONLY);
> +		if (ret != 0)
> +			break;
> +	}
> +
> +	return i - 1;
> +}
> +
>   static void
>   test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
>   				igt_output_t *output)
> @@ -208,7 +227,7 @@ test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
>   	i = 0;
>   	while (i < iterations || loop_forever) {
>   		prepare_planes(data, pipe, max_planes, output);
> -		igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
> +		igt_display_commit2(&data->display, COMMIT_ATOMIC);

Also here probably is leaked memory as well as FBs for each iteration?

That is propably true. Maybe I prepare a separate memory leakage patch as these are somewhat out of the context regarding this proposal.

>   		i++;
>   	}
>   }
> @@ -241,44 +260,17 @@ get_lowres_mode(data_t *data, const drmModeModeInfo *mode_default,
>   	return mode;
>   }
>   
> -static int
> +static void
>   test_resolution_with_output(data_t *data, enum pipe pipe, igt_output_t *output)
>   {
>   	const drmModeModeInfo *mode_hi, *mode_lo;
>   	int iterations = opt.iterations < 1 ? 1 : opt.iterations;
>   	bool loop_forever = opt.iterations == LOOP_FOREVER ? true : false;
> -	int i, c, ret;
> -	int max_planes = data->display.pipes[pipe].n_planes;
> -	igt_plane_t *primary;
> -	drmModeModeInfo *mode;
> +	int i;
>   
>   	i = 0;
>   	while (i < iterations || loop_forever) {
>   		igt_output_set_pipe(output, pipe);
> -		for (c = 0; c < max_planes; c++) {
> -			igt_plane_t *plane = igt_output_get_plane(output, c);
> -
> -			if (plane->type != DRM_PLANE_TYPE_PRIMARY)
> -				continue;
> -			primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> -			data->plane[primary->index] = primary;
> -			mode = igt_output_get_mode(output);
> -			igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> -						DRM_FORMAT_XRGB8888,
> -						LOCAL_I915_FORMAT_MOD_X_TILED,
> -						0.0f, 0.0f, 1.0f,
> -						&data->fb[primary->index]);
> -			igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
> -			ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
> -			if (ret) {
> -				igt_plane_set_fb(data->plane[i], NULL);
> -				igt_remove_fb(data->drm_fd, &data->fb[i]);
> -				data->plane[i] = NULL;
> -				break;
> -			}
> -		}
> -		max_planes = c;
> -		igt_assert_lt(0, max_planes);
>   
>   		mode_hi = igt_output_get_mode(output);
>   		mode_lo = get_lowres_mode(data, mode_hi, output); @@ -293,48 
> +285,35 @@ test_resolution_with_output(data_t *data, enum pipe pipe, 
> igt_output_t *output)
>   
>   		i++;
>   	}
> -
> -	return max_planes;
>   }
>   
>   static void
> -run_test(data_t *data, enum pipe pipe, igt_output_t *output)
> +run_test(data_t *data, enum pipe pipe, int max_planes, igt_output_t 
> +*output)
>   {
> -	int connected_outs;
> -	int n_planes = data->display.pipes[pipe].n_planes;
> -	int max_planes = n_planes;
> -
>   	if (!opt.user_seed)
>   		opt.seed = time(NULL);
>   
> -	connected_outs = 0;
> -	for_each_valid_output_on_pipe(&data->display, pipe, output) {
> -		igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
> -			 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
> -
> -		test_init(data, pipe, n_planes, output);
> -		max_planes = test_resolution_with_output(data, pipe, output);
> -
> -		igt_fork(child, 1) {
> -			test_plane_position_with_output(data, pipe, max_planes, output);
> -		}
> +	igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
> +		 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
>   
> -		test_resolution_with_output(data, pipe, output);
> +	test_init(data, pipe, max_planes, output);
> +	igt_fork(child, 1) {
> +		test_plane_position_with_output(data, pipe, max_planes, output);
> +	}
>   
> -		igt_waitchildren();
> +	test_resolution_with_output(data, pipe, output);
>   
> -		test_fini(data, pipe, n_planes, output);
> +	igt_waitchildren();
>   
> -		connected_outs++;
> -	}
> +	test_fini(data, pipe, max_planes, output);
>   
> -	igt_skip_on(connected_outs == 0);
>   }
>   
>   static void
>   run_tests_for_pipe(data_t *data, enum pipe pipe)
>   {
>   	igt_output_t *output;
> +	int max_planes;
>   
>   	igt_fixture {
>   		int valid_tests = 0;
> @@ -348,9 +327,18 @@ run_tests_for_pipe(data_t *data, enum pipe pipe)
>   		igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
>   	}
>   
> -	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe))
> -		for_each_valid_output_on_pipe(&data->display, pipe, output)
> -			run_test(data, pipe, output);
> +	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe)) {
> +		for_each_valid_output_on_pipe(&data->display, pipe, output) {
> +			int n_planes = data->display.pipes[pipe].n_planes;
> +
> +			test_init(data, pipe, n_planes, output);
> +			max_planes = test_bandwidth(data, pipe, output);
> +			test_fini(data, pipe, n_planes, output);
> +
> +			igt_display_reset(&data->display);
> +			run_test(data, pipe, max_planes, output);
> +		}
> +	}
>   }
>   
>   static int opt_handler(int option, int option_index, void *input)
> 

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Re: [igt-dev] [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform

[Juha-Pekka Heikkilä]

Kahola, Mika kirjoitti 26.3.2020 klo 13.42:
> -----Original Message-----
> From: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
> Sent: Thursday, March 26, 2020 1:22 PM
> To: Kahola, Mika <mika.kahola@intel.com>; igt-dev@lists.freedesktop
> Cc: Lisovskiy, Stanislav <stanislav.lisovskiy@intel.com>
> Subject: Re: [PATCH i-g-t v2] tests/kms_concurrent: Test maximum number of planes supported by the platform
> 
> On 26.3.2020 12.59, Mika Kahola wrote:
>> There was an error in commit 0ab05a51a059 on computing number of
>> maximum supported planes. This patch proposes a fix to this commit by
>> first computing the number of planes that are within platform's
>> bandwidth requirements, resets the display and then executes the actual testing.
>>
>> v2: Remove uninitialized variable (Stan)
>>
>> Signed-off-by: Mika Kahola <mika.kahola@intel.com>
>> ---
>>    tests/kms_concurrent.c | 102 ++++++++++++++++++-----------------------
>>    1 file changed, 45 insertions(+), 57 deletions(-)
>>
>> diff --git a/tests/kms_concurrent.c b/tests/kms_concurrent.c index
>> 61137139..1a7c12fc 100644
>> --- a/tests/kms_concurrent.c
>> +++ b/tests/kms_concurrent.c
>> @@ -195,6 +195,25 @@ prepare_planes(data_t *data, enum pipe pipe, int max_planes,
>>    	igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
>>    }
>>    
>> +static int test_bandwidth(data_t *data, enum pipe pipe, igt_output_t
>> +*output) {
>> +
>> +	int n_planes = data->display.pipes[pipe].n_planes;
>> +	int i;
>> +	int ret;
>> +
>> +	igt_pipe_refresh(&data->display, pipe, true);
>> +
>> +	for (i = 1; i <= n_planes; i++) {
>> +		prepare_planes(data, pipe, i, output);
> 
> Does this leak memory prepare_planes() successfully allocated?
> 
> You mean, we should free the dynamically allocated memory inside prepare_planes?

yes.

> 
>> +		ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC | DRM_MODE_ATOMIC_TEST_ONLY);
>> +		if (ret != 0)
>> +			break;
>> +	}
>> +
>> +	return i - 1;
>> +}
>> +
>>    static void
>>    test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
>>    				igt_output_t *output)
>> @@ -208,7 +227,7 @@ test_plane_position_with_output(data_t *data, enum pipe pipe, int max_planes,
>>    	i = 0;
>>    	while (i < iterations || loop_forever) {
>>    		prepare_planes(data, pipe, max_planes, output);
>> -		igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
>> +		igt_display_commit2(&data->display, COMMIT_ATOMIC);
> 
> Also here probably is leaked memory as well as FBs for each iteration?
> 
> That is propably true. Maybe I prepare a separate memory leakage patch as these are somewhat out of the context regarding this proposal.
> 

There's similar code in kms_plane_multiple which you probably can quite 
directly cut'n'paste here.

>>    		i++;
>>    	}
>>    }
>> @@ -241,44 +260,17 @@ get_lowres_mode(data_t *data, const drmModeModeInfo *mode_default,
>>    	return mode;
>>    }
>>    
>> -static int
>> +static void
>>    test_resolution_with_output(data_t *data, enum pipe pipe, igt_output_t *output)
>>    {
>>    	const drmModeModeInfo *mode_hi, *mode_lo;
>>    	int iterations = opt.iterations < 1 ? 1 : opt.iterations;
>>    	bool loop_forever = opt.iterations == LOOP_FOREVER ? true : false;
>> -	int i, c, ret;
>> -	int max_planes = data->display.pipes[pipe].n_planes;
>> -	igt_plane_t *primary;
>> -	drmModeModeInfo *mode;
>> +	int i;
>>    
>>    	i = 0;
>>    	while (i < iterations || loop_forever) {
>>    		igt_output_set_pipe(output, pipe);
>> -		for (c = 0; c < max_planes; c++) {
>> -			igt_plane_t *plane = igt_output_get_plane(output, c);
>> -
>> -			if (plane->type != DRM_PLANE_TYPE_PRIMARY)
>> -				continue;
>> -			primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
>> -			data->plane[primary->index] = primary;
>> -			mode = igt_output_get_mode(output);
>> -			igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
>> -						DRM_FORMAT_XRGB8888,
>> -						LOCAL_I915_FORMAT_MOD_X_TILED,
>> -						0.0f, 0.0f, 1.0f,
>> -						&data->fb[primary->index]);
>> -			igt_plane_set_fb(data->plane[primary->index], &data->fb[primary->index]);
>> -			ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
>> -			if (ret) {
>> -				igt_plane_set_fb(data->plane[i], NULL);
>> -				igt_remove_fb(data->drm_fd, &data->fb[i]);
>> -				data->plane[i] = NULL;
>> -				break;
>> -			}
>> -		}
>> -		max_planes = c;
>> -		igt_assert_lt(0, max_planes);
>>    
>>    		mode_hi = igt_output_get_mode(output);
>>    		mode_lo = get_lowres_mode(data, mode_hi, output); @@ -293,48
>> +285,35 @@ test_resolution_with_output(data_t *data, enum pipe pipe,
>> igt_output_t *output)
>>    
>>    		i++;
>>    	}
>> -
>> -	return max_planes;
>>    }
>>    
>>    static void
>> -run_test(data_t *data, enum pipe pipe, igt_output_t *output)
>> +run_test(data_t *data, enum pipe pipe, int max_planes, igt_output_t
>> +*output)
>>    {
>> -	int connected_outs;
>> -	int n_planes = data->display.pipes[pipe].n_planes;
>> -	int max_planes = n_planes;
>> -
>>    	if (!opt.user_seed)
>>    		opt.seed = time(NULL);
>>    
>> -	connected_outs = 0;
>> -	for_each_valid_output_on_pipe(&data->display, pipe, output) {
>> -		igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
>> -			 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
>> -
>> -		test_init(data, pipe, n_planes, output);
>> -		max_planes = test_resolution_with_output(data, pipe, output);
>> -
>> -		igt_fork(child, 1) {
>> -			test_plane_position_with_output(data, pipe, max_planes, output);
>> -		}
>> +	igt_info("Testing resolution with connector %s using pipe %s with seed %d\n",
>> +		 igt_output_name(output), kmstest_pipe_name(pipe), opt.seed);
>>    
>> -		test_resolution_with_output(data, pipe, output);
>> +	test_init(data, pipe, max_planes, output);
>> +	igt_fork(child, 1) {
>> +		test_plane_position_with_output(data, pipe, max_planes, output);
>> +	}
>>    
>> -		igt_waitchildren();
>> +	test_resolution_with_output(data, pipe, output);
>>    
>> -		test_fini(data, pipe, n_planes, output);
>> +	igt_waitchildren();
>>    
>> -		connected_outs++;
>> -	}
>> +	test_fini(data, pipe, max_planes, output);
>>    
>> -	igt_skip_on(connected_outs == 0);
>>    }
>>    
>>    static void
>>    run_tests_for_pipe(data_t *data, enum pipe pipe)
>>    {
>>    	igt_output_t *output;
>> +	int max_planes;
>>    
>>    	igt_fixture {
>>    		int valid_tests = 0;
>> @@ -348,9 +327,18 @@ run_tests_for_pipe(data_t *data, enum pipe pipe)
>>    		igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
>>    	}
>>    
>> -	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe))
>> -		for_each_valid_output_on_pipe(&data->display, pipe, output)
>> -			run_test(data, pipe, output);
>> +	igt_subtest_f("pipe-%s", kmstest_pipe_name(pipe)) {
>> +		for_each_valid_output_on_pipe(&data->display, pipe, output) {
>> +			int n_planes = data->display.pipes[pipe].n_planes;
>> +
>> +			test_init(data, pipe, n_planes, output);
>> +			max_planes = test_bandwidth(data, pipe, output);
>> +			test_fini(data, pipe, n_planes, output);
>> +
>> +			igt_display_reset(&data->display);
>> +			run_test(data, pipe, max_planes, output);
>> +		}
>> +	}
>>    }
>>    
>>    static int opt_handler(int option, int option_index, void *input)
>>
> 
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