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After the fence is signaled, the status feed reports whether or not the
request completed successfully. We set this to -EIO if a hang was
detected.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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whilst we may be passing around file descriptions, using fence or
timeline as appropriate is more descriptive.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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It takes a sw_sync_timeline and returns a fence (it is a factory), so
call it sw_sync_timeline_create_fence() for better self-documentation.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Improvements to self-documentating API that matches the rest of sw_sync.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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igt likes to return kernel-esque negative errno where we can, and
indicate that we expect to operate on a sync_fence, otherwise it is
merely a grandiose poll().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Add igt_require_sw_sync to provide tests to skip if sw_sync support isn't
available on the host machine.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
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Base functions to help testing the Sync File Framework (explicit fencing
mechanism ported from Android).
These functions allow you to create, use and destroy timelines and fences.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
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