drm/i915: Mark up clflushes as belonging to an unordered timeline

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2 clflushes on two different objects are not ordered, and so do not
belong to the same timeline (context). Either we use a unique context
for each, or we reserve a special global context to mean unordered.
Ideally, we would reserve 0 to mean unordered (DMA_FENCE_NO_CONTEXT) to
have the same semantics everywhere.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170503093924.5320-1-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2017-05-03 10:39:18 +01:00

parent 6b07b6d2bd

commit 9431282832

4 changed files with 4 additions and 9 deletions

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2

drivers/gpu/drm/i915/i915_drv.h

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2

drivers/gpu/drm/i915/i915_gem.c

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8

drivers/gpu/drm/i915/i915_gem_clflush.c

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1

drivers/gpu/drm/i915/i915_gem_clflush.h

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