[PATCH v7 0/7] DRM scheduler kunit tests
Tvrtko Ursulin
tvrtko.ursulin at igalia.com
Wed Mar 12 10:50:27 UTC 2025
On 12/03/2025 10:39, Philipp Stanner wrote:
> On Tue, 2025-03-11 at 09:23 +0000, Tvrtko Ursulin wrote:
>> There has repeatedly been quite a bit of apprehension when any change
>> to the DRM
>> scheduler is proposed, with two main reasons being code base is
>> considered
>> fragile, not well understood and not very well documented, and
>> secondly the lack
>> of systematic testing outside the vendor specific tests suites and/or
>> test
>> farms.
>>
>> This series is an attempt to dislodge this status quo by adding some
>> unit tests
>> using the kunit framework.
>>
>> General approach is that there is a mock "hardware" backend which can
>> be
>> controlled from tests, which in turn allows exercising various
>> scheduler code
>> paths.
>>
>> Only some simple basic tests get added in the series and hopefully it
>> is easy to
>> understand what tests are doing.
>>
>> An obligatory "screenshot" for reference:
>>
>> [14:09:05] ============ drm_sched_basic_tests (3 subtests)
>> ============
>> [14:09:06] [PASSED] drm_sched_basic_submit
>> [14:09:06] ================== drm_sched_basic_test
>> ===================
>> [14:09:06] [PASSED] A queue of jobs in a single entity
>> [14:09:06] [PASSED] A chain of dependent jobs across multiple
>> entities
>> [14:09:06] [PASSED] Multiple independent job queues
>> [14:09:06] [PASSED] Multiple inter-dependent job queues
>> [14:09:07] ============== [PASSED] drm_sched_basic_test
>> ===============
>> [14:09:07] [PASSED] drm_sched_basic_entity_cleanup
>> [14:09:07] ============== [PASSED] drm_sched_basic_tests
>> ==============
>> [14:09:07] ======== drm_sched_basic_timeout_tests (1 subtest)
>> =========
>> [14:09:08] [PASSED] drm_sched_basic_timeout
>> [14:09:08] ========== [PASSED] drm_sched_basic_timeout_tests
>> ==========
>> [14:09:08] ======= drm_sched_basic_priority_tests (2 subtests)
>> ========
>> [14:09:10] [PASSED] drm_sched_priorities
>> [14:09:10] [PASSED] drm_sched_change_priority
>> [14:09:10] ========= [PASSED] drm_sched_basic_priority_tests
>> ==========
>> [14:09:10] ====== drm_sched_basic_modify_sched_tests (1 subtest)
>> ======
>> [14:09:11] [PASSED] drm_sched_test_modify_sched
>> [14:09:11] ======= [PASSED] drm_sched_basic_modify_sched_tests
>> ========
>> [14:09:11] ======== drm_sched_basic_credits_tests (1 subtest)
>> =========
>> [14:09:12] [PASSED] drm_sched_test_credits
>> [14:09:12] ========== [PASSED] drm_sched_basic_credits_tests
>> ==========
>> [14:09:12]
>> ============================================================
>> [14:09:12] Testing complete. Ran 11 tests: passed: 11
>> [14:09:13] Elapsed time: 13.539s total, 0.001s configuring, 3.004s
>> building, 10.462s running
>>
>> v2:
>> * Parameterize a bunch of similar tests.
>> * Improve test commentary.
>> * Rename TDR test to timeout. (Christian)
>> * Improve quality and consistency of naming. (Philipp)
>>
>> RFC v2 -> series v1:
>> * Rebased for drm_sched_init changes.
>> * Fixed modular build.
>> * Added some comments.
>> * Filename renames. (Philipp)
>>
>> v2:
>> * Dealt with a bunch of checkpatch warnings.
>>
>> v3:
>> * Some mock API renames, kerneldoc grammar fixes and indentation
>> fixes.
>>
>> v4:
>> * Fix use after free caused by relying on scheduler fence for
>> querying status.
>> * Kerneldoc fixes.
>>
>> v5:
>> * Cleanup in-flight jobs on scheduler shutdown.
>> * Change hang_limit to 1.
>>
>> v6:
>> * Use KUNIT_ASSERT_TRUE/FALSE.
>> * Fixed patch titles.
>> * Added credit_limit test.
>
> Please don't add new tests in a settled series. Doing so may seem
> efficient, but causes another round of review and can cause you and me
> trouble when trying to find the cause of issues such as the one
> mentioned below:
>
>> * Added CONFIG_DRM_SCHED_KUNIT_TEST_ASPIRATIONAL.
>>
>> v7:
>> * v6 omitted to send the first patch by mistake.
>
> I either see a new NULL ptr deref added through the new test or an old
> one that has slipped us. My test setup is unchanged.
All I see in what you pasted are kunit_test_null_dereference "crashes".
Ie. expected ones from having enabled CONFIG_KUNIT_FAULT_TEST.
Is there something more that you did not paste?
> On which commit do you apply and test this series? Tell me, then I test again.
Depending on the setup, these three:
commit 413ae464b8021542ad90cb1fbb15f8efc5050a5d
Author: Thomas Zimmermann <tzimmermann at suse.de>
Date: Mon Mar 3 16:41:48 2025 +0100
drm-tip: 2025y-03m-03d-15h-40m-53s UTC integration manifest
commit 5bcb67a2a4c61034f5a25c024631c5fbf351ee8d
Author: Matt Coster <matt.coster at imgtec.com>
Date: Wed Feb 26 10:01:09 2025 +0000
drm-tip: 2025y-02m-26d-09h-59m-48s UTC integration manifest
commit 777e1850811f9864aa8b55940634d3da19712bf7
Author: Imre Deak <imre.deak at intel.com>
Date: Tue Mar 11 11:31:04 2025 +0200
drm-tip: 2025y-03m-11d-09h-30m-13s UTC integration manifest
Regards,
Tvrtko
> [ 3.902457] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
> [ 3.903376] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'
> [ 3.904064] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
> [ 3.904673] cfg80211: failed to load regulatory.db
> [ 3.905037] ALSA device list:
> [ 3.905376] No soundcards found.
> [ 3.905631] KTAP version 1
> [ 3.905834] 1..17
> [ 3.906732] KTAP version 1
> [ 3.906999] # Subtest: kunit_executor_test
> [ 3.907335] # module: kunit
> [ 3.907337] 1..8
> [ 3.908476] ok 1 parse_filter_test
> [ 3.909064] ok 2 filter_suites_test
> [ 3.909801] ok 3 filter_suites_test_glob_test
> [ 3.910678] ok 4 filter_suites_to_empty_test
> [ 3.911621] ok 5 parse_filter_attr_test
> [ 3.912641] ok 6 filter_attr_test
> [ 3.913511] ok 7 filter_attr_empty_test
> [ 3.914081] ok 8 filter_attr_skip_test
> [ 3.914400] # kunit_executor_test: pass:8 fail:0 skip:0 total:8
> [ 3.914685] # Totals: pass:8 fail:0 skip:0 total:8
> [ 3.915121] ok 1 kunit_executor_test
> [ 3.915736] KTAP version 1
> [ 3.915949] # Subtest: kunit-try-catch-test
> [ 3.916314] # module: kunit_test
> [ 3.916315] 1..2
> [ 3.917655] ok 1 kunit_test_try_catch_successful_try_no_catch
> [ 3.917979] ok 2 kunit_test_try_catch_unsuccessful_try_does_catch
> [ 3.918630] # kunit-try-catch-test: pass:2 fail:0 skip:0 total:2
> [ 3.919118] # Totals: pass:2 fail:0 skip:0 total:2
> [ 3.919578] ok 2 kunit-try-catch-test
> [ 3.920248] KTAP version 1
> [ 3.920473] # Subtest: kunit-resource-test
> [ 3.920796] # module: kunit_test
> [ 3.920797] 1..12
> [ 3.921565] ok 1 kunit_resource_test_init_resources
> [ 3.921793] ok 2 kunit_resource_test_alloc_resource
> [ 3.922449] ok 3 kunit_resource_test_destroy_resource
> [ 3.923013] ok 4 kunit_resource_test_remove_resource
> [ 3.924438] ok 5 kunit_resource_test_cleanup_resources
> [ 3.925834] ok 6 kunit_resource_test_proper_free_ordering
> [ 3.926700] ok 7 kunit_resource_test_static
> [ 3.927588] ok 8 kunit_resource_test_named
> [ 3.928244] ok 9 kunit_resource_test_action
> [ 3.928774] ok 10 kunit_resource_test_remove_action
> [ 3.929309] ok 11 kunit_resource_test_release_action
> [ 3.929826] action_order_2
> [ 3.930325] action_order_2
> [ 3.930521] action_order_1
> [ 3.931007] ok 12 kunit_resource_test_action_ordering
> [ 3.931308] # kunit-resource-test: pass:12 fail:0 skip:0 total:12
> [ 3.931702] # Totals: pass:12 fail:0 skip:0 total:12
> [ 3.932183] ok 3 kunit-resource-test
> [ 3.932809] KTAP version 1
> [ 3.933040] # Subtest: kunit-log-test
> [ 3.933367] # module: kunit_test
> [ 3.933368] 1..2
> [ 3.934030] put this in log.
> [ 3.934033] this too.
> [ 3.934305] add to suite log.
> [ 3.934500] along with this.
> [ 3.934982] ok 1 kunit_log_test
> [ 3.935405] # kunit_log_newline_test: Add newline
> [ 3.936164] ok 2 kunit_log_newline_test # SKIP only useful when debugfs is enabled
> [ 3.936166] # kunit-log-test: pass:1 fail:0 skip:1 total:2
> [ 3.936752] # Totals: pass:1 fail:0 skip:1 total:2
> [ 3.937197] ok 4 kunit-log-test
> [ 3.937776] KTAP version 1
> [ 3.938004] # Subtest: kunit_status
> [ 3.938324] # module: kunit_test
> [ 3.938325] 1..2
> [ 3.938921] ok 1 kunit_status_set_failure_test
> [ 3.939049] ok 2 kunit_status_mark_skipped_test
> [ 3.939445] # kunit_status: pass:2 fail:0 skip:0 total:2
> [ 3.939816] # Totals: pass:2 fail:0 skip:0 total:2
> [ 3.940436] ok 5 kunit_status
> [ 3.941142] KTAP version 1
> [ 3.941508] # Subtest: kunit_current
> [ 3.941793] # module: kunit_test
> [ 3.941794] 1..2
> [ 3.942526] ok 1 kunit_current_test
> [ 3.942596] # fake test: lib/kunit/kunit-test.c:722: This should make `fake` test fail.
> [ 3.943302] ok 2 kunit_current_fail_test
> [ 3.943908] # kunit_current: pass:2 fail:0 skip:0 total:2
> [ 3.944271] # Totals: pass:2 fail:0 skip:0 total:2
> [ 3.944661] ok 6 kunit_current
> [ 3.945285] KTAP version 1
> [ 3.945511] # Subtest: kunit_device
> [ 3.945789] # module: kunit_test
> [ 3.945790] 1..3
> [ 3.946905] ok 1 kunit_device_test
> [ 3.947420] ok 2 kunit_device_cleanup_test
> [ 3.948621] ok 3 kunit_device_driver_test
> [ 3.948972] # kunit_device: pass:3 fail:0 skip:0 total:3
> [ 3.949349] # Totals: pass:3 fail:0 skip:0 total:3
> [ 3.949760] ok 7 kunit_device
> [ 3.950395] KTAP version 1
> [ 3.950617] # Subtest: kunit_fault
> [ 3.950889] # module: kunit_test
> [ 3.950890] 1..1
> [ 3.951773] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
> [ 3.952672] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
> [ 3.953239] CPU: 2 UID: 0 PID: 225 Comm: kunit_try_catch Tainted: G N 6.14.0-rc4-00388-g712b7c2f4d5d #21
> [ 3.954000] Tainted: [N]=TEST
> [ 3.954245] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
> [ 3.954850] RIP: 0010:kunit_test_null_dereference+0x4a/0x150
> [ 3.955285] Code: b5 41 48 c7 44 24 08 98 95 51 ba 48 c1 ed 03 48 c7 44 24 10 40 af 3b b7 48 8d 54 05 00 c7 02 f1 f1 f1 f1 c7 42 04 01 f3 f3 f3 <0f> b6 04
> [ 3.956604] RSP: 0000:ffff88810920fe00 EFLAGS: 00010a06
> [ 3.956972] RAX: dffffc0000000000 RBX: ffff88810088fb30 RCX: ffffffffb65da11d
> [ 3.957651] RDX: ffffed1021241fc0 RSI: 0000000000000008 RDI: ffff88810088fb30
> [ 3.958317] RBP: 1ffff11021241fc0 R08: 0000000000000000 R09: ffffed10207de600
> [ 3.958849] R10: ffff888103ef3007 R11: 0000000000000000 R12: ffffffffb73baf40
> [ 3.959425] R13: ffffffffb73b1c60 R14: ffff8881038a9d80 R15: ffff8881091c6ac0
> [ 3.959917] FS: 0000000000000000(0000) GS:ffff888a88700000(0000) knlGS:0000000000000000
> [ 3.960521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 3.960920] CR2: 0000000000000000 CR3: 0000000b1406a000 CR4: 00000000000006f0
> [ 3.961480] Call Trace:
> [ 3.961655] <TASK>
> [ 3.961805] ? die_addr+0x3b/0xa0
> [ 3.962052] ? exc_general_protection+0x151/0x220
> [ 3.962439] ? asm_exc_general_protection+0x26/0x30
> [ 3.962801] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
> [ 3.963447] ? __pfx_kunit_test_null_dereference+0x10/0x10
> [ 3.964150] ? __kthread_parkme+0x7d/0x140
> [ 3.964443] ? kunit_test_null_dereference+0x4a/0x150
> [ 3.964785] ? __pfx_kunit_test_null_dereference+0x10/0x10
> [ 3.965205] ? __kthread_parkme+0x7d/0x140
> [ 3.965494] kunit_generic_run_threadfn_adapter+0x7b/0xe0
> [ 3.965859] kthread+0x30f/0x620
> [ 3.966108] ? __pfx_kthread+0x10/0x10
> [ 3.966406] ? __pfx_kthread+0x10/0x10
> [ 3.966680] ret_from_fork+0x2f/0x70
> [ 3.966941] ? __pfx_kthread+0x10/0x10
> [ 3.967264] ret_from_fork_asm+0x1a/0x30
> [ 3.967560] </TASK>
> [ 3.967722] Modules linked in:
> [ 3.967989] ---[ end trace 0000000000000000 ]---
> [ 3.968368] RIP: 0010:kunit_test_null_dereference+0x4a/0x150
> [ 3.968780] Code: b5 41 48 c7 44 24 08 98 95 51 ba 48 c1 ed 03 48 c7 44 24 10 40 af 3b b7 48 8d 54 05 00 c7 02 f1 f1 f1 f1 c7 42 04 01 f3 f3 f3 <0f> b6 04
> [ 3.970211] RSP: 0000:ffff88810920fe00 EFLAGS: 00010a06
> [ 3.970567] RAX: dffffc0000000000 RBX: ffff88810088fb30 RCX: ffffffffb65da11d
> [ 3.971074] RDX: ffffed1021241fc0 RSI: 0000000000000008 RDI: ffff88810088fb30
> [ 3.971580] RBP: 1ffff11021241fc0 R08: 0000000000000000 R09: ffffed10207de600
> [ 3.972089] R10: ffff888103ef3007 R11: 0000000000000000 R12: ffffffffb73baf40
> [ 3.972629] R13: ffffffffb73b1c60 R14: ffff8881038a9d80 R15: ffff8881091c6ac0
> [ 3.973176] FS: 0000000000000000(0000) GS:ffff888a88700000(0000) knlGS:0000000000000000
> [ 3.973720] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 3.974148] CR2: 0000000000000000 CR3: 0000000b1406a000 CR4: 00000000000006f0
> [ 3.974659] kunit_try_catch (225) used greatest stack depth: 28416 bytes left
> [ 3.974764] # kunit_test_fault_null_dereference: try faulted: last line seen lib/kunit/kunit-test.c:95
> [ 3.976367] ok 1 kunit_test_fault_null_dereference
> [ 3.976370] ok 8 kunit_fault
> [ 3.976946] KTAP version 1
> [ 3.977208] # Subtest: kunit_platform_device
> [ 3.977549] # module: platform_test
> [ 3.977550] 1..4
> [ 3.978550] ok 1 kunit_platform_device_alloc_test
> [ 3.978989] ok 2 kunit_platform_device_add_test
> [ 3.980097] sysfs: cannot create duplicate filename '/devices/platform/kunit-platform-add-2'
> [ 3.981138] CPU: 7 UID: 0 PID: 231 Comm: kunit_try_catch Tainted: G D N 6.14.0-rc4-00388-g712b7c2f4d5d #21
> [ 3.981142] Tainted: [D]=DIE, [N]=TEST
> [ 3.981143] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
> [ 3.981144] Call Trace:
> [ 3.981145] <TASK>
> [ 3.981146] dump_stack_lvl+0x53/0x70
> [ 3.981151] sysfs_warn_dup+0x70/0x90
> [ 3.981154] sysfs_create_dir_ns+0x209/0x280
> [ 3.981156] ? __pfx_sysfs_create_dir_ns+0x10/0x10
> [ 3.981159] ? _raw_spin_lock+0x80/0xe0
> [ 3.981161] kobject_add_internal+0x216/0x8b0
> [ 3.981163] kobject_add+0x13b/0x200
> [ 3.981165] ? __pfx_kobject_add+0x10/0x10
> [ 3.981167] ? kobject_get+0x50/0xe0
> [ 3.981169] device_add+0x217/0x1460
> [ 3.981171] ? __pfx_device_add+0x10/0x10
> [ 3.981173] ? _raw_spin_lock_irqsave+0x86/0xe0
> [ 3.981174] ? __pfx__raw_spin_lock_irqsave+0x10/0x10
> [ 3.981176] ? device_initialize+0x1f4/0x410
> [ 3.981179] ? platform_device_alloc+0x97/0x200
> [ 3.981182] platform_device_add+0x375/0x5b0
> [ 3.981184] kunit_platform_device_add+0x20/0x2c0
> [ 3.981186] kunit_platform_device_add_twice_fails_test+0x1f5/0x420
> [ 3.981189] ? __pfx_kunit_platform_device_add_twice_fails_test+0x10/0x10
> [ 3.981191] ? __schedule+0xdda/0x24f0
> [ 3.981193] ? kvm_clock_get_cycles+0x18/0x30
> [ 3.981196] ? ktime_get_ts64+0x7d/0x220
> [ 3.981200] kunit_try_run_case+0x1ae/0x490
> [ 3.981202] ? __pfx_kunit_try_run_case+0x10/0x10
> [ 3.981204] ? _raw_spin_lock_irqsave+0x86/0xe0
> [ 3.981205] ? __pfx_kunit_try_run_case+0x10/0x10
> [ 3.981207] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
> [ 3.981210] kunit_generic_run_threadfn_adapter+0x7b/0xe0
> [ 3.981212] kthread+0x30f/0x620
> [ 3.981214] ? __pfx_kthread+0x10/0x10
> [ 3.981216] ? __pfx_kthread+0x10/0x10
> [ 3.981217] ret_from_fork+0x2f/0x70
> [ 3.981223] ? __pfx_kthread+0x10/0x10
> [ 3.981225] ret_from_fork_asm+0x1a/0x30
> [ 3.981227] </TASK>
> [ 3.981232] kobject: kobject_add_internal failed for kunit-platform-add-2 with -EEXIST, don't try to register things with the same name in the same direc.
> [ 3.995255] kunit_try_catch (231) used greatest stack depth: 27528 bytes left
> [ 3.995525] ok 3 kunit_platform_device_add_twice_fails_test
> [ 3.996247] ok 4 kunit_platform_device_add_cleans_up
> [ 3.996678] # kunit_platform_device: pass:4 fail:0 skip:0 total:4
> [ 3.997073] # Totals: pass:4 fail:0 skip:0 total:4
> [ 3.997530] ok 9 kunit_platform_device
> [ 3.998130] KTAP version 1
> [ 3.998356] # Subtest: kunit_platform_driver
> [ 3.998664] # module: platform_test
> [ 3.998665] 1..2
> [ 3.999663] ok 1 kunit_platform_driver_register_test
> [ 4.000372] ok 2 kunit_platform_device_prepare_wait_for_probe_completes_when_already_probed
> [ 4.000750] # kunit_platform_driver: pass:2 fail:0 skip:0 total:2
> [ 4.001372] # Totals: pass:2 fail:0 skip:0 total:2
> [ 4.001777] ok 10 kunit_platform_driver
> [ 4.002412] KTAP version 1
> [ 4.002618] # Subtest: string-stream-test
> [ 4.002909] # module: string_stream_test
> [ 4.002910] 1..12
> [ 4.003643] ok 1 string_stream_managed_init_test
> [ 4.003919] ok 2 string_stream_unmanaged_init_test
> [ 4.004581] ok 3 string_stream_managed_free_test
> [ 4.005295] ok 4 string_stream_resource_free_test
> [ 4.007076] ok 5 string_stream_line_add_test
> [ 4.008801] ok 6 string_stream_variable_length_line_test
> [ 4.009944] ok 7 string_stream_append_test
> [ 4.010840] ok 8 string_stream_append_auto_newline_test
> [ 4.011461] ok 9 string_stream_append_empty_string_test
> [ 4.012233] ok 10 string_stream_no_auto_newline_test
> [ 4.013158] ok 11 string_stream_auto_newline_test
> [ 4.063760] # string_stream_performance_test: Time elapsed: 49385 us
> [ 4.064713] # string_stream_performance_test: Total string length: 573890
> [ 4.065271] # string_stream_performance_test: Bytes requested: 823930
> [ 4.065803] # string_stream_performance_test: Actual bytes allocated: 1048312
> [ 4.098820] ok 12 string_stream_performance_test
> [ 4.098826] # string-stream-test: pass:12 fail:0 skip:0 total:12
> [ 4.099348] # Totals: pass:12 fail:0 skip:0 total:12
> [ 4.099814] ok 11 string-stream-test
> [ 4.100495] KTAP version 1
> [ 4.100735] # Subtest: kunit-assert
> [ 4.101048] # module: assert_test
> [ 4.101050] 1..11
> [ 4.101943] ok 1 kunit_test_is_literal
> [ 4.102331] ok 2 kunit_test_is_str_literal
> [ 4.103177] ok 3 kunit_test_assert_prologue
> [ 4.103996] ok 4 kunit_test_assert_print_msg
> [ 4.104867] ok 5 kunit_test_unary_assert_format
> [ 4.105908] ok 6 kunit_test_ptr_not_err_assert_format
> [ 4.107022] ok 7 kunit_test_binary_assert_format
> [ 4.107868] ok 8 kunit_test_binary_ptr_assert_format
> [ 4.108702] ok 9 kunit_test_binary_str_assert_format
> [ 4.109969] ok 10 kunit_test_assert_hexdump
> [ 4.111490] ok 11 kunit_test_mem_assert_format
> [ 4.111845] # kunit-assert: pass:11 fail:0 skip:0 total:11
> [ 4.112522] # Totals: pass:11 fail:0 skip:0 total:11
> [ 4.112949] ok 12 kunit-assert
> [ 4.113628] KTAP version 1
> [ 4.113867] # Subtest: drm_sched_basic_tests
> [ 4.114281] # module: drm_sched_tests
> [ 4.114283] 1..3
> [ 4.234223] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3
> [ 4.617191] ok 1 drm_sched_basic_submit
> [ 4.617197] KTAP version 1
> [ 4.617765] # Subtest: drm_sched_basic_test
> [ 4.719657] ok 1 A queue of jobs in a single entity
> [ 4.821976] ok 2 A chain of dependent jobs across multiple entities
> [ 4.924015] ok 3 Multiple independent job queues
> [ 5.026465] ok 4 Multiple inter-dependent job queues
> [ 5.026907] # drm_sched_basic_test: pass:4 fail:0 skip:0 total:4
> [ 5.027322] ok 2 drm_sched_basic_test
> [ 5.080020] ok 3 drm_sched_basic_entity_cleanup
> [ 5.080317] # drm_sched_basic_tests: pass:3 fail:0 skip:0 total:3
> [ 5.080657] # Totals: pass:6 fail:0 skip:0 total:6
> [ 5.081103] ok 13 drm_sched_basic_tests
> [ 5.081679] KTAP version 1
> [ 5.081881] # Subtest: drm_sched_basic_timeout_tests
> [ 5.082259] # module: drm_sched_tests
> [ 5.082260] 1..1
>
>
>
>>
>> Cc: Christian König <christian.koenig at amd.com>
>> Cc: Danilo Krummrich <dakr at kernel.org>
>> Cc: Matthew Brost <matthew.brost at intel.com>
>> Cc: Philipp Stanner <phasta at kernel.org>
>>
>> Tvrtko Ursulin (7):
>> drm: Move some options to separate new Kconfig
>> drm/sched: Add scheduler unit testing infrastructure and some basic
>> tests
>> drm/sched: Add aspirational unit test mode
>> drm/sched: Add a simple timeout test
>> drm/sched: Add basic priority tests
>> drm/sched: Add a basic test for modifying entities scheduler list
>> drm/sched: Add a basic test for checking credit limit
>>
>> drivers/gpu/drm/Kconfig | 109 +---
>> drivers/gpu/drm/Kconfig.debug | 128 +++++
>> drivers/gpu/drm/scheduler/.kunitconfig | 12 +
>> drivers/gpu/drm/scheduler/Makefile | 2 +
>> drivers/gpu/drm/scheduler/tests/Makefile | 7 +
>> .../gpu/drm/scheduler/tests/mock_scheduler.c | 345 +++++++++++++
>> drivers/gpu/drm/scheduler/tests/sched_tests.h | 224 +++++++++
>> drivers/gpu/drm/scheduler/tests/tests_basic.c | 476
>> ++++++++++++++++++
>> 8 files changed, 1199 insertions(+), 104 deletions(-)
>> create mode 100644 drivers/gpu/drm/Kconfig.debug
>> create mode 100644 drivers/gpu/drm/scheduler/.kunitconfig
>> create mode 100644 drivers/gpu/drm/scheduler/tests/Makefile
>> create mode 100644 drivers/gpu/drm/scheduler/tests/mock_scheduler.c
>> create mode 100644 drivers/gpu/drm/scheduler/tests/sched_tests.h
>> create mode 100644 drivers/gpu/drm/scheduler/tests/tests_basic.c
>>
>
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