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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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We are, the build system takes care of that.
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Acked-by: Petri Latvala <petri.latvala@intel.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Acked-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Lots of test cases are re-declaring this.
v2: Remove definition in benchmarks/gem_syslatency.c
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
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Android defines __USE_GNU but does not provide pthread_attr_setaffinity_np()
so added an extra guard arround pthread_attr_setaffinity_np().
Signed-off-by: Derek Morton <derek.j.morton@intel.com>
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Only if the trial __gem_execbuf reports an error do we want to remove
the fancy LUT flags.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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pthread_setaffinity_np is a GNU extensions, so add some __USE_GNU
ifdeffry and hope for the best if unavailable.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Since clock_gettime() should be a fixed overhead that adds to the
latency result, subtract it from the result.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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In order to keep the latency as low as possible for the idle load, we
need to keep the CPU awake. Otherwise we end up with the busy workload
having lower latency than the idle workload!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Also useful to know how much worse than baseline the latency is when the
gem load is applied. For slower systems, presenting in nanoseconds makes
it hard to read, so switch to microseconds for output.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Instead of measuring the wakeup latency of a GEM client, we turn the
tables here and ask what is the wakeup latency of a normal process
competing with GEM. In particular, a realtime process that expects
deterministic latency.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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