[PATCH RFC v2 0/8] Add KUnit support for i915 driver

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* [PATCH RFC v2 0/8] Add KUnit support for i915 driver
@ 2022-11-03 14:51 Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 1/8] drm/i915: export all selftest functions Mauro Carvalho Chehab
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Isabella Basso, igt-dev, linux-kselftest,
	skhan, Daniel Latypov, Daniel Vetter, David Airlie, dri-devel,
	intel-gfx, linux-kernel

This RFC patch series implement KUnit support for i915 driver,
using the already-existing tests inside i915 selftests.

On this version, mock selftest can now run in qemu with:

	$ ./tools/testing/kunit/kunit.py run --arch=x86_64 \
		--kunitconfig=drivers/gpu/drm/i915/selftests

The tests which depends on having a real i915 hardware will be skipped.

All selftests will run on bare metal, by modprobing test-i915 module.

The output can be parsed (with a hack) using kunit.py:

$ (echo "[    0.000000] TAP version 14"; dmesg)>logs; ./tools/testing/kunit/kunit.py parse logs
[14:29:06] ============================================================
[14:29:06] ============ i915 mock selftests (18 subtests) =============
[14:29:06] [PASSED] mock_sanitycheck
[14:29:06] [PASSED] mock_shmem
[14:29:06] [PASSED] mock_fence
[14:29:06] [PASSED] mock_scatterlist
[14:29:06] [PASSED] mock_syncmap
[14:29:06] [PASSED] mock_uncore
[14:29:06] [PASSED] mock_ring
[14:29:06] [PASSED] mock_engine
[14:29:06] [PASSED] mock_timelines
[14:29:06] [PASSED] mock_requests
[14:29:06] [PASSED] mock_objects
[14:29:06] [PASSED] mock_phys
[14:29:06] [PASSED] mock_dmabuf
[14:29:06] [PASSED] mock_vma
[14:29:06] [PASSED] mock_evict
[14:29:06] [PASSED] mock_gtt
[14:29:06] [PASSED] mock_hugepages
[14:29:06] [PASSED] mock_memory_region
[14:29:06] =============== [PASSED] i915 mock selftests ===============
[14:29:06] ============ i915 live selftests (36 subtests) =============
[14:29:06] [PASSED] live_sanitycheck
[14:29:06] [PASSED] live_uncore
[14:29:06] [PASSED] live_workarounds
[14:29:06] [PASSED] live_gt_engines
[14:29:06] [PASSED] live_gt_timelines
[14:29:06] [PASSED] live_gt_contexts
[14:29:06] [PASSED] live_gt_lrc
[14:29:06] [PASSED] live_gt_mocs
[14:29:06] [PASSED] live_gt_pm
[14:29:06] [PASSED] live_gt_heartbeat
[14:29:06] [PASSED] live_requests
[14:29:06] [PASSED] live_migrate
[14:29:06] [PASSED] live_active
[14:29:06] [PASSED] live_objects
[14:29:06] i915: Performing live_mman selftests with st_random_seed=0x1e5d7be5 st_timeout=500
[14:29:06] test_i915: Setting dangerous option KUnit live_mman - tainting kernel
[14:29:06] test_i915: Running live_mman on 0000:00:02.0
[14:29:06] Test called without an user context!
[14:29:06] # live_mman: EXPECTATION FAILED at drivers/gpu/drm/i915/selftests/i915_kunit.c:110
[14:29:06] Expected ret == 0, but
[14:29:06] ret == -22
[14:29:06] not ok 15 - live_mman
[14:29:06] [FAILED] live_mman
[14:29:06] [PASSED] live_dmabuf
[14:29:06] [PASSED] live_vma
[14:29:06] [PASSED] live_coherency
[14:29:06] [PASSED] live_gtt
[14:29:06] [PASSED] live_gem
[14:29:06] [PASSED] live_evict
[14:29:06] [PASSED] live_hugepages
[14:29:06] [PASSED] live_gem_contexts
[14:29:06] [PASSED] live_client
[14:29:06] [PASSED] live_gem_migrate
[14:29:06] [PASSED] live_reset
[14:29:06] [PASSED] live_memory_region
[14:29:06] [PASSED] live_hangcheck
[14:29:06] [PASSED] live_execlists
[14:29:06] [PASSED] live_ring_submission
[14:29:06] [PASSED] live_perf
[14:29:06] [PASSED] live_slpc
[14:29:06] [PASSED] live_guc
[14:29:06] [PASSED] live_guc_multi_lrc
[14:29:06] [PASSED] live_guc_hang
[14:29:06] [PASSED] live_late_gt_pm
[14:29:06] test_i915: 0000:00:02.0: it is a i915 device.
[14:29:06] # Subtest: i915 live selftests
[14:29:06] 1..36
[14:29:06] # i915 live selftests: pass:35 fail:1 skip:0 total:36
[14:29:06] # Totals: pass:35 fail:1 skip:0 total:36
[14:29:06] not ok 2 - i915 live selftests
[14:29:06] =============== [FAILED] i915 live selftests ===============
[14:29:06] ============= i915 perf selftests (4 subtests) =============
[14:29:06] [PASSED] perf_engine_cs
[14:29:06] [PASSED] perf_request
[14:29:06] [PASSED] perf_migrate
[14:29:06] [PASSED] perf_region
[14:29:06] =============== [PASSED] i915 perf selftests ===============
[14:29:06] ============================================================
[14:29:06] Testing complete. Ran 58 tests: passed: 57, failed: 1

It is worth noticing that the mmap tests will fail while running via
KUnit. The reason is that such tests depend on having an user
context allocated at current->mm. While modprobing i915 with
selftests enabled allocates it - this is done by Kernel fork() logic),
modprobing test-i915 doesn't. So, such tests won't run.

We probably need to modify kunit core in order for it to call
mm_alloc() internally before starting the tests.

Comments? 

PS.: the current approach is getting only the final results of the
selftests. I opted for this strategy as we need to support i915 selftests,
as those are used by Intel DRM CI bot. A more intrusive change could
be done in the future, in order to export all tests called via SUBTESTS()
macro.

It also makes sense to add filtering capabilities to the module, as this ends
being needed during development phase, where some tests might fail
on newer hardware.

---
v2:
  - changes outside KUnit module moved to separate patches;
  - added support for running live and perf selftests on bare metal;
  - made the KUnit test logic identical to i915 selftest.

Mauro Carvalho Chehab (8):
  drm/i915: export all selftest functions
  drm/i915: place selftest preparation on a separate function
  drm/i915: allow running mock selftests via Kunit
  drm/i915: add support to run KUnit tests on bare metal
  drm/i915: add live selftests to KUnit
  drm/i915: add perf selftests to KUnit
  drm/i915: now that all functions are used, remove __maybe_unused
  drm/i915: check if current->mm is not NULL

 drivers/gpu/drm/i915/Kconfig                  |  15 +
 drivers/gpu/drm/i915/Makefile                 |   5 +
 .../gpu/drm/i915/gem/selftests/huge_pages.c   |   2 +
 .../i915/gem/selftests/i915_gem_client_blt.c  |   1 +
 .../i915/gem/selftests/i915_gem_coherency.c   |   1 +
 .../drm/i915/gem/selftests/i915_gem_context.c |   1 +
 .../drm/i915/gem/selftests/i915_gem_dmabuf.c  |   2 +
 .../drm/i915/gem/selftests/i915_gem_migrate.c |   1 +
 .../drm/i915/gem/selftests/i915_gem_mman.c    |   6 +
 .../drm/i915/gem/selftests/i915_gem_object.c  |   2 +
 .../drm/i915/gem/selftests/i915_gem_phys.c    |   1 +
 drivers/gpu/drm/i915/gt/selftest_context.c    |   1 +
 drivers/gpu/drm/i915/gt/selftest_engine.c     |   1 +
 drivers/gpu/drm/i915/gt/selftest_engine_cs.c  |   2 +
 .../drm/i915/gt/selftest_engine_heartbeat.c   |   1 +
 drivers/gpu/drm/i915/gt/selftest_execlists.c  |   1 +
 drivers/gpu/drm/i915/gt/selftest_gt_pm.c      |   2 +
 drivers/gpu/drm/i915/gt/selftest_hangcheck.c  |   1 +
 drivers/gpu/drm/i915/gt/selftest_lrc.c        |   1 +
 drivers/gpu/drm/i915/gt/selftest_migrate.c    |   2 +
 drivers/gpu/drm/i915/gt/selftest_mocs.c       |   1 +
 drivers/gpu/drm/i915/gt/selftest_reset.c      |   1 +
 drivers/gpu/drm/i915/gt/selftest_ring.c       |   1 +
 .../drm/i915/gt/selftest_ring_submission.c    |   1 +
 drivers/gpu/drm/i915/gt/selftest_slpc.c       |   1 +
 drivers/gpu/drm/i915/gt/selftest_timeline.c   |   2 +
 .../gpu/drm/i915/gt/selftest_workarounds.c    |   1 +
 drivers/gpu/drm/i915/gt/st_shmem_utils.c      |   1 +
 drivers/gpu/drm/i915/gt/uc/selftest_guc.c     |   1 +
 .../drm/i915/gt/uc/selftest_guc_hangcheck.c   |   1 +
 .../drm/i915/gt/uc/selftest_guc_multi_lrc.c   |   1 +
 drivers/gpu/drm/i915/i915_selftest.h          |   2 +
 drivers/gpu/drm/i915/selftests/.kunitconfig   |  12 +
 drivers/gpu/drm/i915/selftests/i915_active.c  |   1 +
 drivers/gpu/drm/i915/selftests/i915_gem.c     |   1 +
 .../gpu/drm/i915/selftests/i915_gem_evict.c   |   2 +
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c |   2 +
 drivers/gpu/drm/i915/selftests/i915_kunit.c   | 260 ++++++++++++++++++
 drivers/gpu/drm/i915/selftests/i915_perf.c    |   1 +
 drivers/gpu/drm/i915/selftests/i915_request.c |   3 +
 .../gpu/drm/i915/selftests/i915_selftest.c    |  24 +-
 .../gpu/drm/i915/selftests/i915_sw_fence.c    |   1 +
 drivers/gpu/drm/i915/selftests/i915_syncmap.c |   1 +
 drivers/gpu/drm/i915/selftests/i915_vma.c     |   2 +
 .../drm/i915/selftests/intel_memory_region.c  |   3 +
 drivers/gpu/drm/i915/selftests/intel_uncore.c |   2 +
 drivers/gpu/drm/i915/selftests/scatterlist.c  |   1 +
 47 files changed, 371 insertions(+), 8 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/selftests/.kunitconfig
 create mode 100644 drivers/gpu/drm/i915/selftests/i915_kunit.c

-- 
2.38.1



^ permalink raw reply	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 1/8] drm/i915: export all selftest functions
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function Mauro Carvalho Chehab
                   ` (6 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Christian König, Daniel Latypov,
	Darrick J. Wong, Isabella Basso, Jason A. Donenfeld,
	Michał Winiarski, Thomas Hellström,
	Ville Syrjälä, Akeem G Abodunrin, Alan Previn,
	Andi Shyti, Andrzej Hajda, Anshuman Gupta, Arunpravin,
	Ashutosh Dixit, Bommu Krishnaiah, Bruce Chang, Chris Wilson,
	Dan Carpenter, Daniel Vetter, Daniele Ceraolo Spurio,
	David Airlie, Dmitry Osipenko, Harish Chegondi, Jani Nikula,
	Jason Wang, John Harrison, Joonas Lahtinen, Kees Cook,
	Lucas De Marchi, Maarten Lankhorst, Matt Atwood, Matt Roper,
	Matthew Auld, Matthew Brost, Niranjana Vishwanathapura,
	Nirmoy Das, Rahul Kumar Singh, Ramalingam C, Riana Tauro,
	Robert Beckett, Rodrigo Vivi, Sujaritha Sundaresan,
	Thomas Zimmermann, Tvrtko Ursulin, Vinay Belgaumkar, dri-devel,
	igt-dev, intel-gfx, linux-kernel, linux-kselftest, skhan

In order to prepare for a new KUnit module that will run
selftests, export all selftest functions to I915_SELFTEST
namespace.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/gem/selftests/huge_pages.c          | 2 ++
 drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c | 1 +
 drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c  | 1 +
 drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c    | 1 +
 drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c     | 2 ++
 drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c    | 1 +
 drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c       | 1 +
 drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c     | 2 ++
 drivers/gpu/drm/i915/gem/selftests/i915_gem_phys.c       | 1 +
 drivers/gpu/drm/i915/gt/selftest_context.c               | 1 +
 drivers/gpu/drm/i915/gt/selftest_engine.c                | 1 +
 drivers/gpu/drm/i915/gt/selftest_engine_cs.c             | 2 ++
 drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c      | 1 +
 drivers/gpu/drm/i915/gt/selftest_execlists.c             | 1 +
 drivers/gpu/drm/i915/gt/selftest_gt_pm.c                 | 2 ++
 drivers/gpu/drm/i915/gt/selftest_hangcheck.c             | 1 +
 drivers/gpu/drm/i915/gt/selftest_lrc.c                   | 1 +
 drivers/gpu/drm/i915/gt/selftest_migrate.c               | 2 ++
 drivers/gpu/drm/i915/gt/selftest_mocs.c                  | 1 +
 drivers/gpu/drm/i915/gt/selftest_reset.c                 | 1 +
 drivers/gpu/drm/i915/gt/selftest_ring.c                  | 1 +
 drivers/gpu/drm/i915/gt/selftest_ring_submission.c       | 1 +
 drivers/gpu/drm/i915/gt/selftest_slpc.c                  | 1 +
 drivers/gpu/drm/i915/gt/selftest_timeline.c              | 2 ++
 drivers/gpu/drm/i915/gt/selftest_workarounds.c           | 1 +
 drivers/gpu/drm/i915/gt/st_shmem_utils.c                 | 1 +
 drivers/gpu/drm/i915/gt/uc/selftest_guc.c                | 1 +
 drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c      | 1 +
 drivers/gpu/drm/i915/gt/uc/selftest_guc_multi_lrc.c      | 1 +
 drivers/gpu/drm/i915/selftests/i915_active.c             | 1 +
 drivers/gpu/drm/i915/selftests/i915_gem.c                | 1 +
 drivers/gpu/drm/i915/selftests/i915_gem_evict.c          | 2 ++
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c            | 2 ++
 drivers/gpu/drm/i915/selftests/i915_perf.c               | 1 +
 drivers/gpu/drm/i915/selftests/i915_request.c            | 3 +++
 drivers/gpu/drm/i915/selftests/i915_selftest.c           | 2 ++
 drivers/gpu/drm/i915/selftests/i915_sw_fence.c           | 1 +
 drivers/gpu/drm/i915/selftests/i915_syncmap.c            | 1 +
 drivers/gpu/drm/i915/selftests/i915_vma.c                | 2 ++
 drivers/gpu/drm/i915/selftests/intel_memory_region.c     | 3 +++
 drivers/gpu/drm/i915/selftests/intel_uncore.c            | 2 ++
 drivers/gpu/drm/i915/selftests/scatterlist.c             | 1 +
 42 files changed, 58 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index 0cb99e75b0bc..7cbd01dbff4c 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -1948,6 +1948,7 @@ int i915_gem_huge_page_mock_selftests(void)
 	mock_destroy_device(dev_priv);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_huge_page_mock_selftests, I915_SELFTEST);
 
 int i915_gem_huge_page_live_selftests(struct drm_i915_private *i915)
 {
@@ -1970,3 +1971,4 @@ int i915_gem_huge_page_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_huge_page_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
index 9a6a6b5b722b..9f1ff1e783f6 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
@@ -763,3 +763,4 @@ int i915_gem_client_blt_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_client_blt_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
index a666d7e610f5..1fcbc68c9c0f 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
@@ -436,3 +436,4 @@ int i915_gem_coherency_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_coherency_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index d8864444432b..ea41eff234d4 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -1912,3 +1912,4 @@ int i915_gem_context_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_context_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index f2f3cfad807b..d786e1ea99ec 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -466,6 +466,7 @@ int i915_gem_dmabuf_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_dmabuf_mock_selftests, I915_SELFTEST);
 
 int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
 {
@@ -478,3 +479,4 @@ int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_dmabuf_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
index fe6c37fd7859..eaab89f46f34 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
@@ -526,3 +526,4 @@ int i915_gem_migrate_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_migrate_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 1cae24349a96..add5ae56cd89 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -1847,3 +1847,4 @@ int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_mman_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c
index bdf5bb40ccf1..3e1442119fdb 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object.c
@@ -88,6 +88,7 @@ int i915_gem_object_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_object_mock_selftests, I915_SELFTEST);
 
 int i915_gem_object_live_selftests(struct drm_i915_private *i915)
 {
@@ -97,3 +98,4 @@ int i915_gem_object_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_object_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_phys.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_phys.c
index d43d8dae0f69..03cd27066153 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_phys.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_phys.c
@@ -85,3 +85,4 @@ int i915_gem_phys_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_phys_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_context.c b/drivers/gpu/drm/i915/gt/selftest_context.c
index 76fbae358072..e9ef4c5d43f3 100644
--- a/drivers/gpu/drm/i915/gt/selftest_context.c
+++ b/drivers/gpu/drm/i915/gt/selftest_context.c
@@ -449,3 +449,4 @@ int intel_context_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_context_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine.c b/drivers/gpu/drm/i915/gt/selftest_engine.c
index 57fea9ea1705..77358026c97c 100644
--- a/drivers/gpu/drm/i915/gt/selftest_engine.c
+++ b/drivers/gpu/drm/i915/gt/selftest_engine.c
@@ -25,3 +25,4 @@ int intel_engine_live_selftests(struct drm_i915_private *i915)
 
 	return 0;
 }
+EXPORT_SYMBOL_NS_GPL(intel_engine_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_cs.c b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c
index 1b75f478d1b8..f9e5e5ce8d24 100644
--- a/drivers/gpu/drm/i915/gt/selftest_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c
@@ -366,6 +366,7 @@ int intel_engine_cs_perf_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_engine_cs_perf_selftests, I915_SELFTEST);
 
 static int intel_mmio_bases_check(void *arg)
 {
@@ -421,3 +422,4 @@ int intel_engine_cs_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(intel_engine_cs_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c
index 273d440a53e3..eaa66d8d4181 100644
--- a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c
+++ b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c
@@ -389,6 +389,7 @@ int intel_heartbeat_live_selftests(struct drm_i915_private *i915)
 	i915->params.enable_hangcheck = saved_hangcheck;
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(intel_heartbeat_live_selftests, I915_SELFTEST);
 
 void st_engine_heartbeat_disable(struct intel_engine_cs *engine)
 {
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 2c7c053a8808..a16724cc226f 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -4513,3 +4513,4 @@ int intel_execlists_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_execlists_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
index be94f863bdef..fffcda1ac631 100644
--- a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
@@ -199,6 +199,7 @@ int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_gt_pm_live_selftests, I915_SELFTEST);
 
 int intel_gt_pm_late_selftests(struct drm_i915_private *i915)
 {
@@ -216,3 +217,4 @@ int intel_gt_pm_late_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_gt_pm_late_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 71263058a7b0..4c42052dc1fe 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -2058,3 +2058,4 @@ int intel_hangcheck_live_selftests(struct drm_i915_private *i915)
 
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(intel_hangcheck_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index 82d3f8058995..a1efc184c428 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -1975,3 +1975,4 @@ int intel_lrc_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_lrc_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_migrate.c b/drivers/gpu/drm/i915/gt/selftest_migrate.c
index 0dc5309c90a4..84551e0499b6 100644
--- a/drivers/gpu/drm/i915/gt/selftest_migrate.c
+++ b/drivers/gpu/drm/i915/gt/selftest_migrate.c
@@ -649,6 +649,7 @@ int intel_migrate_live_selftests(struct drm_i915_private *i915)
 
 	return i915_subtests(tests, &gt->migrate);
 }
+EXPORT_SYMBOL_NS_GPL(intel_migrate_live_selftests, I915_SELFTEST);
 
 static struct drm_i915_gem_object *
 create_init_lmem_internal(struct intel_gt *gt, size_t sz, bool try_lmem)
@@ -870,3 +871,4 @@ int intel_migrate_perf_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_migrate_perf_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_mocs.c b/drivers/gpu/drm/i915/gt/selftest_mocs.c
index c1d861333c44..9917c39eaab2 100644
--- a/drivers/gpu/drm/i915/gt/selftest_mocs.c
+++ b/drivers/gpu/drm/i915/gt/selftest_mocs.c
@@ -453,3 +453,4 @@ int intel_mocs_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_mocs_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c
index 37c38bdd5f47..a7e8c182e77d 100644
--- a/drivers/gpu/drm/i915/gt/selftest_reset.c
+++ b/drivers/gpu/drm/i915/gt/selftest_reset.c
@@ -386,3 +386,4 @@ int intel_reset_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_reset_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_ring.c b/drivers/gpu/drm/i915/gt/selftest_ring.c
index 2a8c534dc125..6590c9c504b9 100644
--- a/drivers/gpu/drm/i915/gt/selftest_ring.c
+++ b/drivers/gpu/drm/i915/gt/selftest_ring.c
@@ -108,3 +108,4 @@ int intel_ring_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(intel_ring_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_ring_submission.c b/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
index 70f9ac1ec2c7..5343fb71ecfe 100644
--- a/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/selftest_ring_submission.c
@@ -296,3 +296,4 @@ int intel_ring_submission_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_ring_submission_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_slpc.c b/drivers/gpu/drm/i915/gt/selftest_slpc.c
index 4c6e9257e593..011c8a8548e0 100644
--- a/drivers/gpu/drm/i915/gt/selftest_slpc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_slpc.c
@@ -443,3 +443,4 @@ int intel_slpc_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(intel_slpc_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c b/drivers/gpu/drm/i915/gt/selftest_timeline.c
index 522d0190509c..bb2ff7172b32 100644
--- a/drivers/gpu/drm/i915/gt/selftest_timeline.c
+++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c
@@ -450,6 +450,7 @@ int intel_timeline_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(intel_timeline_mock_selftests, I915_SELFTEST);
 
 static int emit_ggtt_store_dw(struct i915_request *rq, u32 addr, u32 value)
 {
@@ -1423,3 +1424,4 @@ int intel_timeline_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_timeline_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index 21b1edc052f8..948716ca9ae0 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -1393,3 +1393,4 @@ int intel_workarounds_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_workarounds_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/st_shmem_utils.c b/drivers/gpu/drm/i915/gt/st_shmem_utils.c
index b279fe88b70e..46c9d4fca1f8 100644
--- a/drivers/gpu/drm/i915/gt/st_shmem_utils.c
+++ b/drivers/gpu/drm/i915/gt/st_shmem_utils.c
@@ -61,3 +61,4 @@ int shmem_utils_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(shmem_utils_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/uc/selftest_guc.c b/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
index e28518fe8b90..06a098cdf84c 100644
--- a/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/selftest_guc.c
@@ -300,3 +300,4 @@ int intel_guc_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_guc_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c b/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
index 01f8cd3c3134..7be9107465e5 100644
--- a/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/uc/selftest_guc_hangcheck.c
@@ -157,3 +157,4 @@ int intel_guc_hang_check(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_guc_hang_check, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/gt/uc/selftest_guc_multi_lrc.c b/drivers/gpu/drm/i915/gt/uc/selftest_guc_multi_lrc.c
index d17982c36d25..88611140c204 100644
--- a/drivers/gpu/drm/i915/gt/uc/selftest_guc_multi_lrc.c
+++ b/drivers/gpu/drm/i915/gt/uc/selftest_guc_multi_lrc.c
@@ -181,3 +181,4 @@ int intel_guc_multi_lrc_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, gt);
 }
+EXPORT_SYMBOL_NS_GPL(intel_guc_multi_lrc_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_active.c b/drivers/gpu/drm/i915/selftests/i915_active.c
index b61fe850e924..718af653c49b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_active.c
+++ b/drivers/gpu/drm/i915/selftests/i915_active.c
@@ -260,6 +260,7 @@ int i915_active_live_selftests(struct drm_i915_private *i915)
 
 	return i915_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_active_live_selftests, I915_SELFTEST);
 
 static struct intel_engine_cs *node_to_barrier(struct active_node *it)
 {
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c
index e5dd82e7e480..e465f8162d1a 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem.c
@@ -254,3 +254,4 @@ int i915_gem_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 8c6517d29b8e..2e2fb6f78ee8 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -555,6 +555,7 @@ int i915_gem_evict_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_evict_mock_selftests, I915_SELFTEST);
 
 int i915_gem_evict_live_selftests(struct drm_i915_private *i915)
 {
@@ -567,3 +568,4 @@ int i915_gem_evict_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_evict_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 27c733b00976..c81f03e8183b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1938,6 +1938,7 @@ int i915_gem_gtt_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_gtt_mock_selftests, I915_SELFTEST);
 
 static int context_sync(struct intel_context *ce)
 {
@@ -2320,3 +2321,4 @@ int i915_gem_gtt_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_gem_gtt_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_perf.c b/drivers/gpu/drm/i915/selftests/i915_perf.c
index 429c6d73b159..4499ccafbce7 100644
--- a/drivers/gpu/drm/i915/selftests/i915_perf.c
+++ b/drivers/gpu/drm/i915/selftests/i915_perf.c
@@ -437,3 +437,4 @@ int i915_perf_live_selftests(struct drm_i915_private *i915)
 
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_perf_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
index a46350c37e9d..81b1faba55a9 100644
--- a/drivers/gpu/drm/i915/selftests/i915_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -563,6 +563,7 @@ int i915_request_mock_selftests(void)
 
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_request_mock_selftests, I915_SELFTEST);
 
 static int live_nop_request(void *arg)
 {
@@ -1869,6 +1870,7 @@ int i915_request_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_request_live_selftests, I915_SELFTEST);
 
 static int switch_to_kernel_sync(struct intel_context *ce, int err)
 {
@@ -3286,3 +3288,4 @@ int i915_request_perf_selftests(struct drm_i915_private *i915)
 
 	return i915_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_request_perf_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_selftest.c b/drivers/gpu/drm/i915/selftests/i915_selftest.c
index 39da0fb0d6d2..571c9021bd2c 100644
--- a/drivers/gpu/drm/i915/selftests/i915_selftest.c
+++ b/drivers/gpu/drm/i915/selftests/i915_selftest.c
@@ -39,12 +39,14 @@ int i915_mock_sanitycheck(void)
 	pr_info(DRIVER_NAME ": %s() - ok!\n", __func__);
 	return 0;
 }
+EXPORT_SYMBOL_NS_GPL(i915_mock_sanitycheck, I915_SELFTEST);
 
 int i915_live_sanitycheck(struct drm_i915_private *i915)
 {
 	pr_info("%s: %s() - ok!\n", i915->drm.driver->name, __func__);
 	return 0;
 }
+EXPORT_SYMBOL_NS_GPL(i915_live_sanitycheck, I915_SELFTEST);
 
 enum {
 #define selftest(name, func) mock_##name,
diff --git a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
index daa985e5a19b..deccd30fed12 100644
--- a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
@@ -755,3 +755,4 @@ int i915_sw_fence_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(i915_sw_fence_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_syncmap.c b/drivers/gpu/drm/i915/selftests/i915_syncmap.c
index 47f4ae18a1ef..09b04f280e73 100644
--- a/drivers/gpu/drm/i915/selftests/i915_syncmap.c
+++ b/drivers/gpu/drm/i915/selftests/i915_syncmap.c
@@ -614,3 +614,4 @@ int i915_syncmap_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(i915_syncmap_mock_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c
index 71b52d5efef4..78903e5b034d 100644
--- a/drivers/gpu/drm/i915/selftests/i915_vma.c
+++ b/drivers/gpu/drm/i915/selftests/i915_vma.c
@@ -949,6 +949,7 @@ int i915_vma_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(i915_vma_mock_selftests, I915_SELFTEST);
 
 static int igt_vma_remapped_gtt(void *arg)
 {
@@ -1105,3 +1106,4 @@ int i915_vma_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(i915_vma_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
index 3b18e5905c86..9114f26da77c 100644
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -1376,6 +1376,7 @@ int intel_memory_region_mock_selftests(void)
 	mock_destroy_device(i915);
 	return err;
 }
+EXPORT_SYMBOL_NS_GPL(intel_memory_region_mock_selftests, I915_SELFTEST);
 
 int intel_memory_region_live_selftests(struct drm_i915_private *i915)
 {
@@ -1397,6 +1398,7 @@ int intel_memory_region_live_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(intel_memory_region_live_selftests, I915_SELFTEST);
 
 int intel_memory_region_perf_selftests(struct drm_i915_private *i915)
 {
@@ -1409,3 +1411,4 @@ int intel_memory_region_perf_selftests(struct drm_i915_private *i915)
 
 	return i915_live_subtests(tests, i915);
 }
+EXPORT_SYMBOL_NS_GPL(intel_memory_region_perf_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c
index e4281508d580..7abc037d79de 100644
--- a/drivers/gpu/drm/i915/selftests/intel_uncore.c
+++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c
@@ -138,6 +138,7 @@ int intel_uncore_mock_selftests(void)
 
 	return 0;
 }
+EXPORT_SYMBOL_NS_GPL(intel_uncore_mock_selftests, I915_SELFTEST);
 
 static int live_forcewake_ops(void *arg)
 {
@@ -352,3 +353,4 @@ int intel_uncore_live_selftests(struct drm_i915_private *i915)
 
 	return intel_gt_live_subtests(tests, to_gt(i915));
 }
+EXPORT_SYMBOL_NS_GPL(intel_uncore_live_selftests, I915_SELFTEST);
diff --git a/drivers/gpu/drm/i915/selftests/scatterlist.c b/drivers/gpu/drm/i915/selftests/scatterlist.c
index d599186d5b71..d29aa7303b16 100644
--- a/drivers/gpu/drm/i915/selftests/scatterlist.c
+++ b/drivers/gpu/drm/i915/selftests/scatterlist.c
@@ -378,3 +378,4 @@ int scatterlist_mock_selftests(void)
 
 	return i915_subtests(tests, NULL);
 }
+EXPORT_SYMBOL_NS_GPL(scatterlist_mock_selftests, I915_SELFTEST);
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 1/8] drm/i915: export all selftest functions Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 3/8] drm/i915: allow running mock selftests via Kunit Mauro Carvalho Chehab
                   ` (5 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Jason A. Donenfeld, Ville Syrjälä, Andi Shyti,
	Daniel Vetter, David Airlie, Heiko Carstens, Jani Nikula,
	Joonas Lahtinen, Matt Roper, Mika Westerberg, Rodrigo Vivi,
	Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx, linux-kernel,
	linux-kselftest, skhan

The selftest preparation logic should also be used by KUnit. So,
place it on a separate function and export it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/i915_selftest.h          |  2 ++
 .../gpu/drm/i915/selftests/i915_selftest.c    | 22 ++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_selftest.h b/drivers/gpu/drm/i915/i915_selftest.h
index f54de0499be7..7fab96a42a62 100644
--- a/drivers/gpu/drm/i915/i915_selftest.h
+++ b/drivers/gpu/drm/i915/i915_selftest.h
@@ -44,6 +44,7 @@ struct i915_selftest {
 
 extern struct i915_selftest i915_selftest;
 
+void i915_prepare_selftests(const char *name);
 int i915_mock_selftests(void);
 int i915_live_selftests(struct pci_dev *pdev);
 int i915_perf_selftests(struct pci_dev *pdev);
@@ -111,6 +112,7 @@ int __i915_subtests(const char *caller,
 
 #else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
 
+static inline void i915_prepare_selftests(const char *) {};
 static inline int i915_mock_selftests(void) { return 0; }
 static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
 static inline int i915_perf_selftests(struct pci_dev *pdev) { return 0; }
diff --git a/drivers/gpu/drm/i915/selftests/i915_selftest.c b/drivers/gpu/drm/i915/selftests/i915_selftest.c
index 571c9021bd2c..011f7b1f7ff5 100644
--- a/drivers/gpu/drm/i915/selftests/i915_selftest.c
+++ b/drivers/gpu/drm/i915/selftests/i915_selftest.c
@@ -129,13 +129,8 @@ static void set_default_test_all(struct selftest *st, unsigned int count)
 		st[i].enabled = true;
 }
 
-static int __run_selftests(const char *name,
-			   struct selftest *st,
-			   unsigned int count,
-			   void *data)
+void i915_prepare_selftests(const char *name)
 {
-	int err = 0;
-
 	while (!i915_selftest.random_seed)
 		i915_selftest.random_seed = get_random_u32();
 
@@ -144,10 +139,21 @@ static int __run_selftests(const char *name,
 		msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
 		MAX_SCHEDULE_TIMEOUT;
 
-	set_default_test_all(st, count);
-
 	pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
 		name, i915_selftest.random_seed, i915_selftest.timeout_ms);
+}
+EXPORT_SYMBOL_NS_GPL(i915_prepare_selftests, I915_SELFTEST);
+
+static int __run_selftests(const char *name,
+			   struct selftest *st,
+			   unsigned int count,
+			   void *data)
+{
+	int err = 0;
+
+	i915_prepare_selftests(name);
+
+	set_default_test_all(st, count);
 
 	/* Tests are listed in order in i915_*_selftests.h */
 	for (; count--; st++) {
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 3/8] drm/i915: allow running mock selftests via Kunit
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 1/8] drm/i915: export all selftest functions Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 4/8] drm/i915: add support to run KUnit tests on bare metal Mauro Carvalho Chehab
                   ` (4 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Rodrigo Vivi, Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx,
	linux-kernel, linux-kselftest, skhan

The mock selftests don't require any hardware to run. They can
easily run via kunit with qemu or bare metal.

Add support for it.

With this change, mock selftest can now run in qemu with:

	$ ./tools/testing/kunit/kunit.py run --arch=x86_64 \
		--kunitconfig=drivers/gpu/drm/i915/selftests
	[16:50:24] Configuring KUnit Kernel ...
	[16:50:24] Building KUnit Kernel ...
	Populating config with:
	$ make ARCH=x86_64 O=.kunit olddefconfig
	Building with:
	$ make ARCH=x86_64 O=.kunit --jobs=8
	[16:50:32] Starting KUnit Kernel (1/1)...
	[16:50:32] ============================================================
	Running tests with:
	$ qemu-system-x86_64 -nodefaults -m 1024 -kernel .kunit/arch/x86/boot/bzImage -append 'kunit.enable=1 console=ttyS0 kunit_shutdown=reboot' -no-reboot -nographic -serial stdio
	[16:50:33] ============ i915 mock selftests (18 subtests) =============
	[16:50:33] [PASSED] mock_sanitycheck
	[16:50:33] [PASSED] mock_shmem
	[16:50:37] [PASSED] mock_fence
	[16:50:38] [PASSED] mock_scatterlist
	[16:50:39] [PASSED] mock_syncmap
	[16:50:39] [PASSED] mock_uncore
	[16:50:39] [PASSED] mock_ring
	[16:50:39] [PASSED] mock_engine
	[16:50:43] [PASSED] mock_timelines
	[16:50:45] [PASSED] mock_requests
	[16:50:45] [PASSED] mock_objects
	[16:50:45] [PASSED] mock_phys
	[16:50:45] [PASSED] mock_dmabuf
	[16:50:50] [PASSED] mock_vma
	[16:50:51] [PASSED] mock_evict
	[16:50:53] [PASSED] mock_gtt
	[16:50:54] [PASSED] mock_hugepages
	[16:50:55] [PASSED] mock_memory_region
	[16:50:55] =============== [PASSED] i915 mock selftests ===============
	[16:50:55] ============================================================
	[16:50:55] Testing complete. Ran 18 tests: passed: 18
	[16:50:55] Elapsed time: 31.530s total, 0.003s configuring, 8.512s building, 22.974s running

It is also possible to run the tests on a bare metal machine,
and even collect code coverage data with:

	$ sudo lcov -z && sudo modprobe test-i915 && sudo rmmod test-i915 &&
	  sudo IGT_KERNEL_TREE=~/linux ~/freedesktop-igt/scripts/code_cov_capture mock_selftest
	Auto-detecting gcov kernel support.
	Found upstream gcov kernel support at /sys/kernel/debug/gcov
	Resetting kernel execution counters
	Done.
	[627.14]     Code coverage wrote to mock_selftest.info

The KTAP and Kernel logs will be similar to:

	[  596.382685]     # Subtest: i915 mock selftests
	[  596.382688]     1..18
	[  596.387744] i915: i915_mock_sanitycheck() - ok!
	[  596.395423]     ok 1 - mock_sanitycheck
	[  596.395495] i915: Running shmem_utils_mock_selftests/igt_shmem_basic
	[  596.406650]     ok 2 - mock_shmem
	[  596.406737] i915: Running i915_sw_fence_mock_selftests/test_self
	[  596.416868] i915: Running i915_sw_fence_mock_selftests/test_dag
	[  596.423220] i915: Running i915_sw_fence_mock_selftests/test_AB
	[  596.429585] i915: Running i915_sw_fence_mock_selftests/test_ABC
	[  596.435921] i915: Running i915_sw_fence_mock_selftests/test_AB_C
	[  596.442293] i915: Running i915_sw_fence_mock_selftests/test_C_AB
	[  596.448671] i915: Running i915_sw_fence_mock_selftests/test_chain
	[  596.485336] i915: Running i915_sw_fence_mock_selftests/test_ipc
	[  596.492984] i915: Running i915_sw_fence_mock_selftests/test_timer
	[  602.484395] i915: Running i915_sw_fence_mock_selftests/test_dma_fence
	[  603.876315] Asynchronous wait on fence mock:mock:0 timed out (hint:fence_notify [i915])
	[  603.886148]     ok 3 - mock_fence
	[  603.886377] i915: Running scatterlist_mock_selftests/igt_sg_alloc
	[  604.398052] sg_alloc_table timed out
	[  604.401979] i915: Running scatterlist_mock_selftests/igt_sg_trim
	[  604.909003] i915_sg_trim timed out
	[  604.912850]     ok 4 - mock_scatterlist
	[  604.912987] i915: Running i915_syncmap_mock_selftests/igt_syncmap_init
	[  604.924092] i915: Running i915_syncmap_mock_selftests/igt_syncmap_one
	[  605.430961] i915: Running i915_syncmap_mock_selftests/igt_syncmap_join_above
	[  605.438458] i915: Running i915_syncmap_mock_selftests/igt_syncmap_join_below
	[  605.446670] i915: Running i915_syncmap_mock_selftests/igt_syncmap_neighbours
	[  606.736462] i915: Running i915_syncmap_mock_selftests/igt_syncmap_compact
	[  606.744342] i915: Running i915_syncmap_mock_selftests/igt_syncmap_random
	[  607.266569]     ok 5 - mock_syncmap
	[  607.266771]     ok 6 - mock_uncore
	[  607.271144] i915: Running intel_ring_mock_selftests/igt_ring_direction
	[  607.281872]     ok 7 - mock_ring
	[  607.282142] i915: Running intel_engine_cs_mock_selftests/intel_mmio_bases_check
	[  607.293531]     ok 8 - mock_engine
	[  607.293654] i915: Running intel_timeline_mock_selftests/mock_hwsp_freelist
	[  607.305034]  mock: [drm] Using Transparent Hugepages
	[  607.310389]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  607.318223]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  607.326040]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  608.689291] i915: Running intel_timeline_mock_selftests/igt_sync
	[  608.698029] i915: Running intel_timeline_mock_selftests/bench_sync
	[  608.906628] bench_sync: 53196 random insertions, 1895ns/insert
	[  608.915839] bench_sync: 53196 random lookups, 53ns/lookup
	[  609.155603] bench_sync: 1048321 in-order insertions, 96ns/insert
	[  609.164592] bench_sync: 1048321 in-order lookups, 2ns/lookup
	[  609.387580] bench_sync: 7925741 repeated insert/lookups, 9ns/op
	[  609.494570] bench_sync: 22777779 cyclic/1 insert/lookups, 4ns/op
	[  609.601560] bench_sync: 22764130 cyclic/2 insert/lookups, 4ns/op
	[  609.708550] bench_sync: 20866721 cyclic/3 insert/lookups, 4ns/op
	[  609.815540] bench_sync: 18824730 cyclic/5 insert/lookups, 5ns/op
	[  609.922530] bench_sync: 18970181 cyclic/8 insert/lookups, 5ns/op
	[  610.029521] bench_sync: 6831382 cyclic/13 insert/lookups, 14ns/op
	[  610.151510] bench_sync: 64217 cyclic/21 insert/lookups, 1563ns/op
	[  610.282616]     ok 9 - mock_timelines
	[  610.283053]  mock: [drm] Using Transparent Hugepages
	[  610.292383]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  610.300224]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  610.308041]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  610.316016] i915: Running i915_request_mock_selftests/igt_add_request
	[  610.322822] i915: Running i915_request_mock_selftests/igt_wait_request
	[  610.844362] i915: Running i915_request_mock_selftests/igt_fence_wait
	[  611.363857] i915: Running i915_request_mock_selftests/igt_request_rewind
	[  611.371805] i915: Running i915_request_mock_selftests/mock_breadcrumbs_smoketest
	[  612.250735] Completed 165 waits for 104816 fence across 16 cpus
	[  612.462006]     ok 10 - mock_requests
	[  612.462987]  mock: [drm] Using Transparent Hugepages
	[  612.472754]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  612.480545]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  612.488383]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  612.496394] i915: Running i915_gem_object_mock_selftests/igt_gem_object
	[  612.539886]     ok 11 - mock_objects
	[  612.540722]  mock: [drm] Using Transparent Hugepages
	[  612.550497]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  612.558586]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  612.566459]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  612.574445] i915: Running i915_gem_phys_mock_selftests/mock_phys_object
	[  612.619821]     ok 12 - mock_phys
	[  612.620708]  mock: [drm] Using Transparent Hugepages
	[  612.630193]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  612.638335]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  612.646137]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  612.654080] i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_export
	[  612.661326] i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import_self
	[  612.669021] i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import
	[  612.676285] i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_import_ownership
	[  612.688485] i915: Running i915_gem_dmabuf_mock_selftests/igt_dmabuf_export_vmap
	[  612.696350]     ok 13 - mock_dmabuf
	[  612.696939]  mock: [drm] Using Transparent Hugepages
	[  612.706117]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  612.714044]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  612.721922]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  612.729895] i915: Running i915_vma_mock_selftests/igt_vma_create
	[  613.237460] igt_vma_create timed out: after 41 objects in 43 contexts
	[  613.245661] i915: Running i915_vma_mock_selftests/igt_vma_pin1
	[  613.252146] i915: Running i915_vma_mock_selftests/igt_vma_rotate_remap
	[  615.995098] i915: Running i915_vma_mock_selftests/igt_vma_partial
	[  618.518421]     ok 14 - mock_vma
	[  618.519367]  mock: [drm] Using Transparent Hugepages
	[  618.528625]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  618.536467]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  618.544330]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  618.552318] i915: Running i915_gem_evict_mock_selftests/igt_evict_something
	[  618.697340] i915: Running i915_gem_evict_mock_selftests/igt_evict_for_vma
	[  618.836366] i915: Running i915_gem_evict_mock_selftests/igt_evict_for_cache_color
	[  618.849926] i915: Running i915_gem_evict_mock_selftests/igt_evict_vm
	[  618.992647] i915: Running i915_gem_evict_mock_selftests/igt_overcommit
	[  619.170384]     ok 15 - mock_evict
	[  619.171566]  mock: [drm] Using Transparent Hugepages
	[  619.181351]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  619.189520]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  619.197366]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  619.205322] i915: Running i915_gem_gtt_mock_selftests/igt_mock_drunk
	[  619.712643] drunk_hole timed out after 41097/524288
	[  619.717987] i915: Running i915_gem_gtt_mock_selftests/igt_mock_walk
	[  620.225588] walk_hole timed out at a692000
	[  620.230687] i915: Running i915_gem_gtt_mock_selftests/igt_mock_pot
	[  620.976730] pot_hole timed out after 19/33
	[  620.981596] i915: Running i915_gem_gtt_mock_selftests/igt_mock_fill
	[  621.491729] fill_hole timed out (npages=1, prime=257)
	[  621.497424] i915: Running i915_gem_gtt_mock_selftests/igt_gtt_reserve
	[  621.620470] i915: Running i915_gem_gtt_mock_selftests/igt_gtt_insert
	[  621.891015]     ok 16 - mock_gtt
	[  621.892018]  mock: [drm] Using Transparent Hugepages
	[  621.901620]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  621.909449]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  621.917347]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  621.925497] i915: Running i915_gem_huge_page_mock_selftests/igt_mock_exhaust_device_supported_pages
	[  621.937541] i915: Running i915_gem_huge_page_mock_selftests/igt_mock_memory_region_huge_pages
	[  621.947479] i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_misaligned_dma
	[  622.032179] i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_huge_fill
	[  622.540726] igt_mock_ppgtt_huge_fill timed out at size 61313024
	[  622.547707] i915: Running i915_gem_huge_page_mock_selftests/igt_mock_ppgtt_64K
	[  622.944941]     ok 17 - mock_hugepages
	[  622.945866]  mock: [drm] Using Transparent Hugepages
	[  622.956054]  mock: [drm] Incompatible option enable_guc=3 - GuC is not supported!
	[  622.963891]  mock: [drm] Incompatible option enable_guc=3 - HuC is not supported!
	[  622.971705]  mock: [drm] Incompatible option enable_guc=3 - GuC submission is N/A
	[  622.979664] i915: Running intel_memory_region_mock_selftests/igt_mock_reserve
	[  623.006381] i915: Running intel_memory_region_mock_selftests/igt_mock_fill
	[  623.057022] i915: Running intel_memory_region_mock_selftests/igt_mock_contiguous
	[  624.040905] i915: Running intel_memory_region_mock_selftests/igt_mock_splintered_region
	[  624.075553] i915: Running intel_memory_region_mock_selftests/igt_mock_max_segment
	[  624.108598] i915: Running intel_memory_region_mock_selftests/igt_mock_io_size
	[  624.116097] igt_mock_io_size with ps=1000, io_size=a7823000, total=1b5fee000
	[  624.133227] igt_mock_io_size mappable theft=(632MiB/2680MiB), total=7007MiB
	[  624.204955]     ok 18 - mock_memory_region
	[  624.204964] # i915 mock selftests: pass:18 fail:0 skip:0 total:18
	[  624.209921] # Totals: pass:18 fail:0 skip:0 total:18
	[  624.216762] ok 1 - i915 mock selftests.

They could be parsed with kunit.py with:

	echo "[    0.000000] TAP version 14" >logs
	dmesg  >>logs
	./tools/testing/kunit/kunit.py parse logs

Note: kunit.py is currently broken with modules, not producing any
results if "TAP version xx" is not found. It also shows the results
duplicated.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/Kconfig                | 15 ++++
 drivers/gpu/drm/i915/Makefile               |  5 ++
 drivers/gpu/drm/i915/selftests/.kunitconfig | 12 +++
 drivers/gpu/drm/i915/selftests/i915_kunit.c | 95 +++++++++++++++++++++
 4 files changed, 127 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/selftests/.kunitconfig
 create mode 100644 drivers/gpu/drm/i915/selftests/i915_kunit.c

diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index 3efce05d7b57..323c63af72d8 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -53,6 +53,21 @@ config DRM_I915
 
 	  If "M" is selected, the module will be called i915.
 
+config DRM_I915_KUNIT_TESTS
+	tristate "KUnit tests for Intel 8xx/9xx/G3x/G4x/HD Graphics" if !KUNIT_ALL_TESTS
+	depends on DRM_I915 && KUNIT
+	default KUNIT_ALL_TESTS
+	help
+	  Builds unit tests for i915 driver. This option is not useful for
+	  distributions or general kernels, but only for kernel
+	  developers working on i915 DRM driver.
+
+	  For more information on KUnit and unit tests in general,
+	  please refer to the KUnit documentation in
+	  Documentation/dev-tools/kunit/.
+
+	  If in doubt, say "N".
+
 config DRM_I915_FORCE_PROBE
 	string "Force probe driver for selected new Intel hardware"
 	depends on DRM_I915
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 2535593ab379..4ce1e8113db6 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -341,6 +341,11 @@ i915-$(CONFIG_DRM_I915_SELFTEST) += \
 	selftests/igt_spinner.o \
 	selftests/librapl.o
 
+test-i915-y += selftests/i915_kunit.o
+ifneq ($(CONFIG_DRM_I915_SELFTEST),)
+	obj-$(CONFIG_DRM_I915_KUNIT_TESTS) += test-i915.o
+endif
+
 # virtual gpu code
 i915-y += i915_vgpu.o
 
diff --git a/drivers/gpu/drm/i915/selftests/.kunitconfig b/drivers/gpu/drm/i915/selftests/.kunitconfig
new file mode 100644
index 000000000000..98600bbde6b3
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/.kunitconfig
@@ -0,0 +1,12 @@
+# i915 dependencies
+CONFIG_KUNIT=y
+CONFIG_PCI=y
+CONFIG_DRM=y
+CONFIG_DRM_I915=y
+
+# Needed by selftest
+CONFIG_EXPERT=y
+# PREEMPT_RT is not set
+
+CONFIG_DRM_I915_SELFTEST=y
+CONFIG_DRM_I915_KUNIT_TESTS=y
diff --git a/drivers/gpu/drm/i915/selftests/i915_kunit.c b/drivers/gpu/drm/i915/selftests/i915_kunit.c
new file mode 100644
index 000000000000..731b84a1fdc3
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_kunit.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Unit tests for i915
+ *
+ * Copyright © 2022 Intel Corporation
+ * Author: Mauro Carvalho Chehab <mchehab@kernel.org>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <kunit/test.h>
+#include "i915_selftest.h"
+
+/*
+ * Test run logic, similar to what i915 selftest does
+ */
+
+static void run_mock_test(struct kunit *test,
+			  int (*f)(void))
+{
+	int ret;
+
+	cond_resched();
+	if (signal_pending(current))
+		return;
+
+	pr_info("Running %s\n", test->name);
+	ret = f();
+
+	if (ret == -EINTR && !signal_pending(current))
+		ret = 0;
+
+	if (WARN(ret > 0 || ret == -ENOTTY,
+		 "%s returned %d, conflicting with selftest's magic values!\n",
+		 test->name, ret))
+		ret = -EINVAL;
+
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+/*
+ * Test initialization
+ */
+static int initialize_i915_selftests(struct kunit *test)
+{
+	i915_prepare_selftests(test->name);
+
+	pr_notice("Setting dangerous option KUnit %s - tainting kernel\n",
+			  test->name);
+	add_taint(TAINT_USER, LOCKDEP_STILL_OK);
+
+	return 0;
+}
+
+/*
+ * Test suite 1: mock selftests
+ */
+
+/* Declare selftest functions */
+#define selftest(x, __y) int __y(void);
+#include "i915_mock_selftests.h"
+#undef selftest
+
+/* Create selftest functions */
+#define selftest(__x, __y)				\
+	static void mock_##__x(struct kunit *test) {	\
+	    run_mock_test(test, __y);			\
+	}
+#include "i915_mock_selftests.h"
+#undef selftest
+
+/* Fill tests array */
+#define selftest(__x, __y) KUNIT_CASE(mock_##__x),
+static struct kunit_case i915_mock_tests[] = {
+#include "i915_mock_selftests.h"
+	{}
+};
+#undef selftest
+
+/*
+ * Declare test suites
+ */
+
+static struct kunit_suite i915_test_suites[] = {
+	{
+		.name = "i915 mock selftests",
+		.test_cases = i915_mock_tests,
+		.init = initialize_i915_selftests,
+	},
+};
+
+kunit_test_suites(i915_test_suites);
+
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(I915_SELFTEST);
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 4/8] drm/i915: add support to run KUnit tests on bare metal
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
                   ` (2 preceding siblings ...)
  2022-11-03 14:51 ` [PATCH RFC v2 3/8] drm/i915: allow running mock selftests via Kunit Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 5/8] drm/i915: add live selftests to KUnit Mauro Carvalho Chehab
                   ` (3 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Rodrigo Vivi, Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx,
	linux-kernel, linux-kselftest, skhan

Add a logic to seek for PCI devices and to run tests on
them, if the tests are willing to run on physical hardware,
instead of using Qemu.

Later patches will add the KUnit tests. So, for now, mark
such functions with __maybe_unused, to avoid build issues
with WERROR.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/selftests/i915_kunit.c | 100 ++++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/drivers/gpu/drm/i915/selftests/i915_kunit.c b/drivers/gpu/drm/i915/selftests/i915_kunit.c
index 731b84a1fdc3..430610864f6e 100644
--- a/drivers/gpu/drm/i915/selftests/i915_kunit.c
+++ b/drivers/gpu/drm/i915/selftests/i915_kunit.c
@@ -8,9 +8,109 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/pci.h>
 #include <kunit/test.h>
+#include "i915_drv.h"
 #include "i915_selftest.h"
 
+#define MAX_PCI_BOARDS	8
+
+/*
+ * PCI selftest support
+ *
+ * It is possible to run tests that demands hardware in bare metal.
+ *
+ * Add a logic to detect and get PCI devices using i915 driver, up to
+ * MAX_PCI_BOARDS devices.
+ */
+
+static int n_boards;
+static struct pci_dev *dev_i915[MAX_PCI_BOARDS];
+static int __maybe_unused i915_pci_init_suite(struct kunit_suite *suite)
+{
+	struct pci_dev *pdev = NULL;
+	int i;
+
+	/* Check for PCI devices with i915 driver */
+	do {
+		/*
+		 * Let's search all devices at the PCI ID. We could, instead,
+		 * use include/drm/i915_pciids.h, but that would mean a much
+		 * more complex code, and won't still warrant that the device
+		 * was bound to i915 driver. So, let's check the driver's
+		 * name instead.
+		 */
+		pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pdev);
+		if (pdev) {
+			if (pdev->driver && !strcmp(pdev->driver->name, "i915")) {
+				pr_info("%s: it is a i915 device.\n",
+					pci_name(pdev));
+
+				for (i = 0; i < n_boards; i++) {
+					if (pdev == dev_i915[i]) {
+						pci_dev_put(pdev);
+						continue;
+					}
+				}
+				dev_i915[n_boards++] = pdev;
+				if (n_boards >= MAX_PCI_BOARDS)
+					break;
+			} else {
+				pci_dev_put(pdev);
+			}
+		}
+	} while (pdev);
+
+	return 0;
+}
+
+static void __maybe_unused i915_pci_exit_suite(struct kunit_suite *suite)
+{
+	int i;
+
+	for (i = 0; i < n_boards; i++)
+		pci_dev_put(dev_i915[i]);
+
+	n_boards = 0;
+}
+
+static void __maybe_unused run_pci_test(struct kunit *test,
+					int (*f)(struct drm_i915_private *i915))
+{
+	struct drm_i915_private *i915;
+	int i, ret, disable_display;
+
+	if (!n_boards)
+		kunit_skip(test, "runs only on i915 hardware\n");
+
+	for (i = 0; i < n_boards; i++) {
+		i915 = pdev_to_i915(dev_i915[i]);
+
+		cond_resched();
+		if (signal_pending(current))
+			return;
+
+		pr_info("Running %s on %s\n",
+			test->name, pci_name(dev_i915[i]));
+
+		/* FIXME: is it ok to disable_display here? */
+		disable_display = i915->params.disable_display;
+		i915->params.disable_display = 1;
+		ret = f(i915);
+		i915->params.disable_display = disable_display;
+
+		if (ret == -EINTR && !signal_pending(current))
+			ret = 0;
+
+		if (WARN(ret > 0 || ret == -ENOTTY,
+			"%s returned %d, conflicting with selftest's magic values!\n",
+			test->name, ret))
+			ret = -EINVAL;
+
+		KUNIT_EXPECT_EQ(test, ret, 0);
+	}
+}
+
 /*
  * Test run logic, similar to what i915 selftest does
  */
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 5/8] drm/i915: add live selftests to KUnit
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
                   ` (3 preceding siblings ...)
  2022-11-03 14:51 ` [PATCH RFC v2 4/8] drm/i915: add support to run KUnit tests on bare metal Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 6/8] drm/i915: add perf " Mauro Carvalho Chehab
                   ` (2 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Rodrigo Vivi, Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx,
	linux-kernel, linux-kselftest, skhan

Now that i915 KUnit has PCI support, add live tests as well.

NOTE: currently, some tests are failing when excecuting via
KUnit. I'll do a further investigation to check why, and if
this patch can be safely merged or not.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/selftests/i915_kunit.c | 35 ++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/selftests/i915_kunit.c b/drivers/gpu/drm/i915/selftests/i915_kunit.c
index 430610864f6e..f5281c866d75 100644
--- a/drivers/gpu/drm/i915/selftests/i915_kunit.c
+++ b/drivers/gpu/drm/i915/selftests/i915_kunit.c
@@ -177,6 +177,31 @@ static struct kunit_case i915_mock_tests[] = {
 };
 #undef selftest
 
+/*
+ * Suite 2: live selftests
+ */
+
+/* Declare selftest functions */
+#define selftest(x, __y) int __y(struct drm_i915_private *i915);
+#include "i915_live_selftests.h"
+#undef selftest
+
+/* Create selftest functions */
+#define selftest(__x, __y) 				\
+	static void live_##__x(struct kunit *test) {	\
+		run_pci_test(test, __y);		\
+	}
+#include "i915_live_selftests.h"
+#undef selftest
+
+/* Fill tests array */
+#define selftest(__x, __y) KUNIT_CASE(live_##__x),
+static struct kunit_case i915_live_tests[] = {
+#include "i915_live_selftests.h"
+	{}
+};
+#undef selftest
+
 /*
  * Declare test suites
  */
@@ -187,9 +212,17 @@ static struct kunit_suite i915_test_suites[] = {
 		.test_cases = i915_mock_tests,
 		.init = initialize_i915_selftests,
 	},
+	{
+		.name = "i915 live selftests",
+		.test_cases = i915_live_tests,
+		.init = initialize_i915_selftests,
+		.suite_init = i915_pci_init_suite,
+		.suite_exit = i915_pci_exit_suite,
+	},
 };
 
-kunit_test_suites(i915_test_suites);
+kunit_test_suites(&i915_test_suites[0],
+		  &i915_test_suites[1]);
 
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS(I915_SELFTEST);
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 6/8] drm/i915: add perf selftests to KUnit
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
                   ` (4 preceding siblings ...)
  2022-11-03 14:51 ` [PATCH RFC v2 5/8] drm/i915: add live selftests to KUnit Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 7/8] drm/i915: now that all functions are used, remove __maybe_unused Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 8/8] drm/i915: check if current->mm is not NULL Mauro Carvalho Chehab
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Rodrigo Vivi, Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx,
	linux-kernel, linux-kselftest, skhan

Now that i915 KUnit has PCI support, add perf tests as well.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/selftests/i915_kunit.c | 34 ++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/selftests/i915_kunit.c b/drivers/gpu/drm/i915/selftests/i915_kunit.c
index f5281c866d75..6de5d3fa8920 100644
--- a/drivers/gpu/drm/i915/selftests/i915_kunit.c
+++ b/drivers/gpu/drm/i915/selftests/i915_kunit.c
@@ -202,6 +202,30 @@ static struct kunit_case i915_live_tests[] = {
 };
 #undef selftest
 
+/*
+ * Suite 3: live selftests
+ */
+
+#define selftest(x, __y) int __y(struct drm_i915_private *i915);
+#include "i915_perf_selftests.h"
+#undef selftest
+
+/* Create selftest functions */
+#define selftest(__x, __y)				\
+	static void perf_##__x(struct kunit *test) {	\
+		run_pci_test(test, __y);		\
+	}
+#include "i915_perf_selftests.h"
+#undef selftest
+
+/* Fill tests array */
+#define selftest(__x, __y) KUNIT_CASE(perf_##__x),
+static struct kunit_case i915_perf_tests[] = {
+#include "i915_perf_selftests.h"
+	{}
+};
+#undef selftest
+
 /*
  * Declare test suites
  */
@@ -219,10 +243,18 @@ static struct kunit_suite i915_test_suites[] = {
 		.suite_init = i915_pci_init_suite,
 		.suite_exit = i915_pci_exit_suite,
 	},
+	{
+		.name = "i915 perf selftests",
+		.test_cases = i915_perf_tests,
+		.init = initialize_i915_selftests,
+		.suite_init = i915_pci_init_suite,
+		.suite_exit = i915_pci_exit_suite,
+	},
 };
 
 kunit_test_suites(&i915_test_suites[0],
-		  &i915_test_suites[1]);
+		  &i915_test_suites[1],
+		  &i915_test_suites[2]);
 
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS(I915_SELFTEST);
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 7/8] drm/i915: now that all functions are used, remove __maybe_unused
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
                   ` (5 preceding siblings ...)
  2022-11-03 14:51 ` [PATCH RFC v2 6/8] drm/i915: add perf " Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  2022-11-03 14:51 ` [PATCH RFC v2 8/8] drm/i915: check if current->mm is not NULL Mauro Carvalho Chehab
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Daniel Latypov, Isabella Basso,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Rodrigo Vivi, Tvrtko Ursulin, dri-devel, igt-dev, intel-gfx,
	linux-kernel, linux-kselftest, skhan

The PCI-specific KUnit tests that run in bare metal got added,
so we can remove the __maybe_unused from such functions.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/selftests/i915_kunit.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/selftests/i915_kunit.c b/drivers/gpu/drm/i915/selftests/i915_kunit.c
index 6de5d3fa8920..e6dbffe919e6 100644
--- a/drivers/gpu/drm/i915/selftests/i915_kunit.c
+++ b/drivers/gpu/drm/i915/selftests/i915_kunit.c
@@ -26,7 +26,7 @@
 
 static int n_boards;
 static struct pci_dev *dev_i915[MAX_PCI_BOARDS];
-static int __maybe_unused i915_pci_init_suite(struct kunit_suite *suite)
+static int i915_pci_init_suite(struct kunit_suite *suite)
 {
 	struct pci_dev *pdev = NULL;
 	int i;
@@ -64,7 +64,7 @@ static int __maybe_unused i915_pci_init_suite(struct kunit_suite *suite)
 	return 0;
 }
 
-static void __maybe_unused i915_pci_exit_suite(struct kunit_suite *suite)
+static void i915_pci_exit_suite(struct kunit_suite *suite)
 {
 	int i;
 
@@ -74,8 +74,8 @@ static void __maybe_unused i915_pci_exit_suite(struct kunit_suite *suite)
 	n_boards = 0;
 }
 
-static void __maybe_unused run_pci_test(struct kunit *test,
-					int (*f)(struct drm_i915_private *i915))
+static void run_pci_test(struct kunit *test,
+			 int (*f)(struct drm_i915_private *i915))
 {
 	struct drm_i915_private *i915;
 	int i, ret, disable_display;
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH RFC v2 8/8] drm/i915: check if current->mm is not NULL
  2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
                   ` (6 preceding siblings ...)
  2022-11-03 14:51 ` [PATCH RFC v2 7/8] drm/i915: now that all functions are used, remove __maybe_unused Mauro Carvalho Chehab
@ 2022-11-03 14:51 ` Mauro Carvalho Chehab
  7 siblings, 0 replies; 9+ messages in thread
From: Mauro Carvalho Chehab @ 2022-11-03 14:51 UTC (permalink / raw)
  Cc: Mauro Carvalho Chehab, Christian König, Daniel Latypov,
	Isabella Basso, Michał Winiarski, Thomas Hellström,
	Daniel Vetter, David Airlie, Jani Nikula, Joonas Lahtinen,
	Matt Roper, Matthew Auld, Rodrigo Vivi, Tvrtko Ursulin, dri-devel,
	igt-dev, intel-gfx, linux-kernel, linux-kselftest, skhan

The mmap tests require mm in order to work. Failing to do that
will cause a crash:

[  316.820722] BUG: kernel NULL pointer dereference, address: 00000000000000e8
[  316.822517] #PF: supervisor write access in kernel mode
[  316.823430] #PF: error_code(0x0002) - not-present page
[  316.824390] PGD 0 P4D 0
[  316.825357] Oops: 0002 [#1] PREEMPT SMP NOPTI
[  316.826350] CPU: 0 PID: 1517 Comm: kunit_try_catch Tainted: G     U           N 6.1.0-rc2-drm-266703e6f163+ #14
[  316.827503] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake Y LPDDR4x T4 Crb, BIOS TGLSFWI1.R00.3243.A01.2006102133 06/10/2020
[  316.828633] RIP: 0010:down_write_killable+0x50/0x110
[  316.829756] Code: 24 10 45 31 c9 31 c9 41 b8 01 00 00 00 31 d2 31 f6 48 89 ef e8 e1 74 4a ff bf 01 00 00 00 e8 87 d6 46 ff 31 c0 ba 01 00 00 00 <f0> 48 0f b1 13 0f 94 c0 5a 84 c0 74 62 8b 05 49 12 e4 00 85 c0 74
[  316.830896] RSP: 0018:ffffc90001eabc58 EFLAGS: 00010246
[  316.832008] RAX: 0000000000000000 RBX: 00000000000000e8 RCX: 0000000000000000
[  316.833141] RDX: 0000000000000001 RSI: ffffffff81c94fc9 RDI: ffffffff81c94fc9
[  316.834195] RBP: 0000000000000158 R08: 0000000000000001 R09: 0000000000000000
[  316.835231] R10: 0000000000000000 R11: ffff8883a13350b8 R12: 0000000000000002
[  316.836259] R13: 0000000000000001 R14: 0000000000100000 R15: 00000000000000e8
[  316.837237] FS:  0000000000000000(0000) GS:ffff8883a3800000(0000) knlGS:0000000000000000
[  316.838214] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  316.839190] CR2: 00000000000000e8 CR3: 0000000002812003 CR4: 0000000000770ef0
[  316.840147] PKRU: 55555554
[  316.841099] Call Trace:
[  316.842047]  <TASK>
[  316.842990]  ? vm_mmap_pgoff+0x78/0x150
[  316.843936]  vm_mmap_pgoff+0x78/0x150
[  316.844884]  igt_mmap_offset+0x178/0x1b9 [i915]
[  316.846119]  __igt_mmap+0xfe/0x680 [i915]

Unfortunately, when KUnit module runs, it doesn't create an
user context, causing mmap tests to fail.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index add5ae56cd89..2c5f93e946b5 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -1845,6 +1845,11 @@ int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 		SUBTEST(igt_mmap_gpu),
 	};
 
+	if (!current->mm) {
+		pr_err("Test called without an user context!\n");
+		return -EINVAL;
+	}
+
 	return i915_live_subtests(tests, i915);
 }
 EXPORT_SYMBOL_NS_GPL(i915_gem_mman_live_selftests, I915_SELFTEST);
-- 
2.38.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2022-11-03 14:52 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-11-03 14:51 [PATCH RFC v2 0/8] Add KUnit support for i915 driver Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 1/8] drm/i915: export all selftest functions Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 3/8] drm/i915: allow running mock selftests via Kunit Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 4/8] drm/i915: add support to run KUnit tests on bare metal Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 5/8] drm/i915: add live selftests to KUnit Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 6/8] drm/i915: add perf " Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 7/8] drm/i915: now that all functions are used, remove __maybe_unused Mauro Carvalho Chehab
2022-11-03 14:51 ` [PATCH RFC v2 8/8] drm/i915: check if current->mm is not NULL Mauro Carvalho Chehab

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