drm/i915: Allow contexts to be unreferenced locklessly

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If we move the actual cleanup of the context to a worker, we can allow
the final free to be called from any context and avoid undue latency in
the caller.

v2: Negotiate handling the delayed contexts free by flushing the
workqueue before calling i915_gem_context_fini() and performing the final
free of the kernel context directly
v3: Flush deferred frees before new context allocations

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170620110547.15947-2-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2017-06-20 12:05:46 +01:00

parent 829a0af29f

commit 5f09a9c8ab

10 changed files with 88 additions and 39 deletions

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2

drivers/gpu/drm/i915/gvt/scheduler.c

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2

drivers/gpu/drm/i915/i915_drv.c

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23

drivers/gpu/drm/i915/i915_drv.h

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59

drivers/gpu/drm/i915/i915_gem_context.c

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15

drivers/gpu/drm/i915/i915_gem_context.h

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4

drivers/gpu/drm/i915/i915_perf.c

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8

drivers/gpu/drm/i915/selftests/i915_vma.c

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9

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

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

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

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