drm/i915/selftests: Use a sacrificial context for hang testing

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Avoid injecting hangs in to the i915->kernel_context in case the GPU
reset leaves corruption in the context image in its wake (leading to
continual failures and system hangs after the selftests are ostensibly
complete). Use a sacrificial kernel_context instead.

v2: Closing a context is tricky; export a function (for selftests) from
i915_gem_context.c to get it right.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180205152431.12163-2-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2018-02-05 15:24:29 +00:00

parent a8b66f2c2f

commit 8ec21a7c4b

3 changed files with 36 additions and 17 deletions

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39

drivers/gpu/drm/i915/selftests/intel_hangcheck.c

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11

drivers/gpu/drm/i915/selftests/mock_context.c

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3

drivers/gpu/drm/i915/selftests/mock_context.h

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