drm/i915/gem: Split the context's obj:vma lut into its own mutex

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Rather than reuse the common ctx->mutex for locking the execbuffer LUT,
split it into its own lock to avoid being taken [as part of ctx->mutex]
at inappropriate times. In particular to avoid the inversion from taking
the timeline->mutex for the whole execbuf submission in the next patch.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200703004306.11117-1-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2020-07-03 01:43:06 +01:00

parent 03fca66b7a

commit f7ce8639f6

5 changed files with 26 additions and 13 deletions

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11

drivers/gpu/drm/i915/gem/i915_gem_context.c

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1

drivers/gpu/drm/i915/gem/i915_gem_context_types.h

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19

drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c

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4

drivers/gpu/drm/i915/gem/i915_gem_object.c

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4

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

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