drm/i915: Make i915_vma.flags atomic_t for mutex reduction

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In preparation for reducing struct_mutex stranglehold around the vm,
make the vma.flags atomic so that we can acquire a pin on the vma
atomically before deciding if we need to take the mutex.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911090243.16786-1-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2019-09-11 10:02:43 +01:00

parent 0606259e3b

commit 4dd2fbbfb5

6 changed files with 64 additions and 49 deletions

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2

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

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2

drivers/gpu/drm/i915/gem/i915_gem_stolen.c

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14

drivers/gpu/drm/i915/i915_gem_gtt.c

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29

drivers/gpu/drm/i915/i915_vma.c

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62

drivers/gpu/drm/i915/i915_vma.h

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4

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

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