Re: [igt-dev] [PATCH i-g-t v2 3/4] lib/igt_kmod: add compatibility for KUnit

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On Thu, Nov 03, 2022 at 12:40:59PM +0100, Mauro Carvalho Chehab wrote:
> On Thu, 3 Nov 2022 10:48:40 +0100
> Mauro Carvalho Chehab <mauro.chehab@xxxxxxxxxxxxxxx> wrote:
> 
> > On Sun, 28 Aug 2022 21:09:19 -0300
> > Isabella Basso <isabbasso@xxxxxxxxxx> wrote:
> > 
> > > This adds functions for both executing the tests as well as parsing (K)TAP
> > > kmsg output, as per the KTAP spec [1].
> > > 
> > > [1] https://www.kernel.org/doc/html/latest/dev-tools/ktap.html
> > > 
> > > Signed-off-by: Isabella Basso <isabbasso@xxxxxxxxxx>  
> > 
> > Hi Isabella,
> > 
> > I'm doing some tests here with my i915 KUnit patch series.
> > 
> > There's a problem with the way it is currently parsing the KTAP logs on
> > IGT. It sounds that it is parsing the data only at the end, and not as
> > they arrive. That's bad, as if something goes wrong, the previously
> > reported data is still useful.
> > 
> > Also, when there's a crash, the IGT process is getting segmentation
> > fault. So, the end result is that nothing is actually reported.
> > 
> > 	$ sudo ./build/tests/i915_selftest
> > 	IGT-Version: 1.26-gbab20eb65 (x86_64) (Linux: 6.1.0-rc2-drm-990037e9984e+ x86_64)
> > 	Segmentation fault (core dumped)
> 
> Another issue related to KTAP parsing: this is the output before
> the KUnit patch, which is used by IGT CI to check the test results, for
> i915 mock selftest:
> 
> <snip>
> IGT-Version: 1.26-gbab20eb65 (x86_64) (Linux: 6.1.0-rc2-drm-8dacd9299fcc+ x86_64)
> process 659 (alsactl) is using audio device. Should be terminated.
> Starting subtest: mock
> Starting dynamic subtest: sanitycheck
> Dynamic subtest sanitycheck: SUCCESS (0.648s)
> Starting dynamic subtest: shmem
> Dynamic subtest shmem: SUCCESS (0.557s)
> Starting dynamic subtest: fence
> Dynamic subtest fence: SUCCESS (8.078s)
> Starting dynamic subtest: scatterlist
> Dynamic subtest scatterlist: SUCCESS (1.531s)
> Starting dynamic subtest: syncmap
> Dynamic subtest syncmap: SUCCESS (2.875s)
> Starting dynamic subtest: uncore
> Dynamic subtest uncore: SUCCESS (0.525s)
> Starting dynamic subtest: ring
> Dynamic subtest ring: SUCCESS (0.529s)
> Starting dynamic subtest: engine
> Dynamic subtest engine: SUCCESS (0.527s)
> Starting dynamic subtest: timelines
> Dynamic subtest timelines: SUCCESS (4.177s)
> Starting dynamic subtest: requests
> Dynamic subtest requests: SUCCESS (3.561s)
> Starting dynamic subtest: objects
> Dynamic subtest objects: SUCCESS (0.596s)
> Starting dynamic subtest: phys
> Dynamic subtest phys: SUCCESS (0.602s)
> Starting dynamic subtest: dmabuf
> Dynamic subtest dmabuf: SUCCESS (0.605s)
> Starting dynamic subtest: vma
> Dynamic subtest vma: SUCCESS (9.724s)
> Starting dynamic subtest: evict
> Dynamic subtest evict: SUCCESS (1.660s)
> Starting dynamic subtest: gtt
> Dynamic subtest gtt: SUCCESS (3.309s)
> Starting dynamic subtest: hugepages
> Dynamic subtest hugepages: SUCCESS (1.665s)
> Starting dynamic subtest: memory_region
> Dynamic subtest memory_region: SUCCESS (2.789s)
> Subtest mock: SUCCESS (43.961s)
> </snip>
> 
> This is the logs after your patch:
> 
> <snip>
> Missing test version string
> Executing 18 tests in: i915 mock selftests
> kmsg> 1..18
> kmsg> i915: i915_mock_sanitycheck() - ok!
> kmsg> ok 1 - mock_sanitycheck
> kmsg> i915: Running shmem_utils_mock_selftests/igt_shmem_basic
> kmsg> ok 2 - mock_shmem
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_self
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_dag
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_AB
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_ABC
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_AB_C
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_C_AB
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_chain
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_ipc
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_timer
> kmsg> i915: Running i915_sw_fence_mock_selftests/test_dma_fence
> kmsg> Asynchronous wait on fence mock:mock:0 timed out (hint:fence_notify [i915])
> kmsg> ok 3 - mock_fence
> kmsg> i915: Running scatterlist_mock_selftests/igt_sg_alloc
> kmsg> sg_alloc_table timed out
> kmsg> i915: Running scatterlist_mock_selftests/igt_sg_trim
> kmsg> i915_sg_trim timed out
> kmsg> ok 4 - mock_scatterlist
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_init
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_one
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_join_above
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_join_below
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_neighbours
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_compact
> kmsg> i915: Running i915_syncmap_mock_selftests/igt_syncmap_random
> kmsg> ok 5 - mock_syncmap
> kmsg> ok 6 - mock_uncore
> kmsg> i915: Running intel_ring_mock_selftests/igt_ring_direction
> kmsg> ok 7 - mock_ring
> kmsg> i915: Running intel_engine_cs_mock_selftests/intel_mmio_bases_check
> kmsg> ok 8 - mock_engine
> kmsg> i915: Running intel_timeline_mock_selftests/mock_hwsp_freelist
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running intel_timeline_mock_selftests/igt_sync
> kmsg> i915: Running intel_timeline_mock_selftests/bench_sync
> kmsg> bench_sync: 44045 random insertions, 2288ns/insert
> kmsg> bench_sync: 44045 random lookups, 80ns/lookup
> kmsg> bench_sync: 877617 in-order insertions, 114ns/insert
> kmsg> bench_sync: 877617 in-order lookups, 3ns/lookup
> kmsg> bench_sync: 6357870 repeated insert/lookups, 10ns/op
> kmsg> bench_sync: 19942183 cyclic/1 insert/lookups, 5ns/op
> kmsg> bench_sync: 19353937 cyclic/2 insert/lookups, 5ns/op
> kmsg> bench_sync: 16969941 cyclic/3 insert/lookups, 5ns/op
> kmsg> bench_sync: 14438533 cyclic/5 insert/lookups, 6ns/op
> kmsg> bench_sync: 13418112 cyclic/8 insert/lookups, 7ns/op
> kmsg> bench_sync: 9257200 cyclic/13 insert/lookups, 10ns/op
> kmsg> bench_sync: 53636 cyclic/21 insert/lookups, 1877ns/op
> kmsg> ok 9 - mock_timelines
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_request_mock_selftests/igt_add_request
> kmsg> i915: Running i915_request_mock_selftests/igt_wait_request
> kmsg> i915: Running i915_request_mock_selftests/igt_fence_wait
> kmsg> i915: Running i915_request_mock_selftests/igt_request_rewind
> kmsg> i915: Running i915_request_mock_selftests/mock_breadcrumbs_smoketest
> kmsg> Completed 92 waits for 49042 fence across 8 cpus
> kmsg> ok 10 - mock_requests
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_object_mock_selftests/igt_gem_object
> kmsg> ok 11 - mock_objects
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_phys_mock_selftests/mock_phys_object
> kmsg> ok 12 - mock_phys
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_export
> kmsg> i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import_self
> kmsg> i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import
> kmsg> i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import_ownership
> kmsg> i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_export_vmap
> kmsg> ok 13 - mock_dmabuf
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_vma_mock_selftests/igt_vma_create
> kmsg> igt_vma_create timed out: after 31 objects in 23 contexts
> kmsg> i915: Running i915_vma_mock_selftests/igt_vma_pin1
> kmsg> i915: Running i915_vma_mock_selftests/igt_vma_rotate_remap
> kmsg> i915: Running i915_vma_mock_selftests/igt_vma_partial
> kmsg> ok 14 - mock_vma
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_evict_mock_selftests/igt_evict_something
> kmsg> i915: Running i915_gem_evict_mock_selftests/igt_evict_for_vma
> kmsg> i915: Running i915_gem_evict_mock_selftests/igt_evict_for_cache_color
> kmsg> i915: Running i915_gem_evict_mock_selftests/igt_evict_vm
> kmsg> i915: Running i915_gem_evict_mock_selftests/igt_overcommit
> kmsg> ok 15 - mock_evict
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_mock_drunk
> kmsg> drunk_hole timed out after 31635/524288
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_mock_walk
> kmsg> walk_hole timed out at 812f000
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_mock_pot
> kmsg> pot_hole timed out after 19/33
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_mock_fill
> kmsg> fill_hole timed out (npages=1, prime=199)
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_gtt_reserve
> kmsg> i915: Running i915_gem_gtt_mock_selftests/igt_gtt_insert
> kmsg> ok 16 - mock_gtt
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running i915_gem_huge_page_mock_selftests/igt_mock_exhaust_device_supported_pages
> kmsg> i915: Running i915_gem_huge_page_mock_selftests/igt_mock_memory_region_huge_pages
> kmsg> i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_misaligned_dma
> kmsg> i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_huge_fill
> kmsg> igt_mock_ppgtt_huge_fill timed out at size 43986944
> kmsg> i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_64K
> kmsg> ok 17 - mock_hugepages
> kmsg> mock: [drm] Using Transparent Hugepages
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
> kmsg> mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_reserve
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_fill
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_contiguous
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_splintered_region
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_max_segment
> kmsg> i915: Running intel_memory_region_mock_selftests/igt_mock_io_size
> kmsg> igt_mock_io_size with ps=10000, io_size=10000000, total=cf110000
> kmsg> igt_mock_io_size mappable theft=(0MiB/256MiB), total=3313MiB
> kmsg> ok 18 - mock_memory_region
> kmsg> # i915 mock selftests: pass:18 fail:0 skip:0 total:18
> kmsg> # Totals: pass:18 fail:0 skip:0 total:18
> kmsg> ok 1 - i915 mock selftests
> SUCCESS (29.259s)
> </snip>
> 
> Basically, the current output will break CI reports presented at:
> 	https://intel-gfx-ci.01.org/tree/drm-tip/bat-all.html?testfilter=selftest
> 
> The IGT output after your change should be similar to what we had
> before, e. g. each test should output SUCCESS/FAIL/SKIP (plus the
> final result of all tests at the suite).

That should not be done manually though. Only with igt_subtest /
igt_dynamic blocks.

-- 
Petri Latvala



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