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author | Matthew Brost <matthew.brost@intel.com> | 2021-09-09 19:47:32 +0300 |
---|---|---|
committer | John Harrison <John.C.Harrison@Intel.com> | 2021-09-13 21:30:38 +0300 |
commit | d2420c2ed8f1bae5f36f681aad73b3d4c5a57d39 (patch) | |
tree | 7318efe8b4aaab4c14b368e85e383bc58f979a73 /drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c | |
parent | d135865cb8e396c0cc1d7d52dbb980fde39da641 (diff) | |
download | linux-d2420c2ed8f1bae5f36f681aad73b3d4c5a57d39.tar.xz |
drm/i915/selftests: Add initial GuC selftest for scrubbing lost G2H
While debugging an issue with full GT resets I went down a rabbit hole
thinking the scrubbing of lost G2H wasn't working correctly. This proved
to be incorrect as this was working just fine but this chase inspired me
to write a selftest to prove that this works. This simple selftest
injects errors dropping various G2H and then issues a full GT reset
proving that the scrubbing of these G2H doesn't blow up.
v2:
(Daniel Vetter)
- Use ifdef instead of macros for selftests
v3:
(Checkpatch)
- A space after 'switch' statement
v4:
(Daniele)
- A comment saying GT won't idle if G2H are lost
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210909164744.31249-12-matthew.brost@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c')
-rw-r--r-- | drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c index 4b328346b48a..310fb83c527e 100644 --- a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c +++ b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c @@ -14,6 +14,18 @@ #define REDUCED_PREEMPT 10 #define WAIT_FOR_RESET_TIME 10000 +struct intel_engine_cs *intel_selftest_find_any_engine(struct intel_gt *gt) +{ + struct intel_engine_cs *engine; + enum intel_engine_id id; + + for_each_engine(engine, gt, id) + return engine; + + pr_err("No valid engine found!\n"); + return NULL; +} + int intel_selftest_modify_policy(struct intel_engine_cs *engine, struct intel_selftest_saved_policy *saved, u32 modify_type) |