[PATCH 1/7] drm/selftests: Move i915 buddy selftests into drm

[Arunpravin]

On 08/02/22 4:05 pm, Matthew Auld wrote:
> On 03/02/2022 13:32, Arunpravin wrote:
>> - move i915 buddy selftests into drm selftests folder
>> - add Makefile and Kconfig support
>> - add sanitycheck testcase
>>
>> Prerequisites
>> - These series of selftests patches are created on top of
>>    drm buddy series
>> - Enable kselftests for DRM as a module in .config
>>
>> Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam at amd.com>
> 
> At some point I guess we also want some IGT that picks this up? Like we 
> do in tests/drm_mm.c? That way this can get picked up by CI?

igt-gpu-tools? we need to create tests/drm_buddy.c to pick these tests.
I will create a patch to include drm buddy selftests into igt-gpu-tools
> 
> Acked-by: Matthew Auld <matthew.auld at intel.com>
> 
>> ---
>>   drivers/gpu/drm/Kconfig                       |  1 +
>>   drivers/gpu/drm/selftests/Makefile            |  3 +-
>>   .../gpu/drm/selftests/drm_buddy_selftests.h   |  9 ++++
>>   drivers/gpu/drm/selftests/test-drm_buddy.c    | 49 +++++++++++++++++++
>>   4 files changed, 61 insertions(+), 1 deletion(-)
>>   create mode 100644 drivers/gpu/drm/selftests/drm_buddy_selftests.h
>>   create mode 100644 drivers/gpu/drm/selftests/test-drm_buddy.c
>>
>> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
>> index eb5a57ae3c5c..ff856df3f97f 100644
>> --- a/drivers/gpu/drm/Kconfig
>> +++ b/drivers/gpu/drm/Kconfig
>> @@ -71,6 +71,7 @@ config DRM_DEBUG_SELFTEST
>>   	select DRM_DP_HELPER
>>   	select DRM_LIB_RANDOM
>>   	select DRM_KMS_HELPER
>> +	select DRM_BUDDY
>>   	select DRM_EXPORT_FOR_TESTS if m
>>   	default n
>>   	help
>> diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile
>> index 0856e4b12f70..5ba5f9138c95 100644
>> --- a/drivers/gpu/drm/selftests/Makefile
>> +++ b/drivers/gpu/drm/selftests/Makefile
>> @@ -4,4 +4,5 @@ test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
>>   		      test-drm_damage_helper.o test-drm_dp_mst_helper.o \
>>   		      test-drm_rect.o
>>   
>> -obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o
>> +obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o \
>> +				    test-drm_buddy.o
>> diff --git a/drivers/gpu/drm/selftests/drm_buddy_selftests.h b/drivers/gpu/drm/selftests/drm_buddy_selftests.h
>> new file mode 100644
>> index 000000000000..a4bcf3a6dfe3
>> --- /dev/null
>> +++ b/drivers/gpu/drm/selftests/drm_buddy_selftests.h
>> @@ -0,0 +1,9 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/* List each unit test as selftest(name, function)
>> + *
>> + * The name is used as both an enum and expanded as igt__name to create
>> + * a module parameter. It must be unique and legal for a C identifier.
>> + *
>> + * Tests are executed in order by igt/drm_buddy
>> + */
>> +selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */
>> diff --git a/drivers/gpu/drm/selftests/test-drm_buddy.c b/drivers/gpu/drm/selftests/test-drm_buddy.c
>> new file mode 100644
>> index 000000000000..51e4d393d22c
>> --- /dev/null
>> +++ b/drivers/gpu/drm/selftests/test-drm_buddy.c
>> @@ -0,0 +1,49 @@
>> +// SPDX-License-Identifier: MIT
>> +/*
>> + * Copyright © 2019 Intel Corporation
>> + */
>> +
>> +#define pr_fmt(fmt) "drm_buddy: " fmt
>> +
>> +#include <linux/module.h>
>> +
>> +#include <drm/drm_buddy.h>
>> +
>> +#include "../lib/drm_random.h"
>> +
>> +#define TESTS "drm_buddy_selftests.h"
>> +#include "drm_selftest.h"
>> +
>> +static unsigned int random_seed;
>> +
>> +static int igt_sanitycheck(void *ignored)
>> +{
>> +	pr_info("%s - ok!\n", __func__);
>> +	return 0;
>> +}
>> +
>> +#include "drm_selftest.c"
>> +
>> +static int __init test_drm_buddy_init(void)
>> +{
>> +	int err;
>> +
>> +	while (!random_seed)
>> +		random_seed = get_random_int();
>> +
>> +	pr_info("Testing DRM buddy manager (struct drm_buddy), with random_seed=0x%x\n",
>> +		random_seed);
>> +	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
>> +
>> +	return err > 0 ? 0 : err;
>> +}
>> +
>> +static void __exit test_drm_buddy_exit(void)
>> +{
>> +}
>> +
>> +module_init(test_drm_buddy_init);
>> +module_exit(test_drm_buddy_exit);
>> +
>> +MODULE_AUTHOR("Intel Corporation");
>> +MODULE_LICENSE("GPL");