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authorChris Wilson <chris@chris-wilson.co.uk>2017-03-09 21:12:30 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2017-03-10 14:28:39 +0000
commite0e8c7cb6eb68e9256de2d8cbeb481d3701c05ac (patch)
tree8f66b1f4c6b056f0268b2e37105f26c935966494 /tools/perf/scripts/python/export-to-postgresql.py
parent8eadc19b380d5650e9d9c58e8ecc28e9f2b4a371 (diff)
drm/i915: Stop using RP_DOWN_EI on Baytrail
On Baytrail, we manually calculate busyness over the evaluation interval to avoid issues with miscaluations with RC6 enabled. However, it turns out that the DOWN_EI interrupt generator is completely bust - it operates in two modes, continuous or never. Neither of which are conducive to good behaviour. Stop unmask the DOWN_EI interrupt and just compute everything from the UP_EI which does seem to correspond to the desired interval. v2: Fixup gen6_rps_pm_mask() as well v3: Inline vlv_c0_above() to combine the now identical elapsed calculation for up/down and simplify the threshold testing Fixes: 43cf3bf084ba ("drm/i915: Improved w/a for rps on Baytrail") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: <stable@vger.kernel.org> # v4.1+ Link: http://patchwork.freedesktop.org/patch/msgid/20170309211232.28878-1-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
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