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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 14:08:44 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 15:40:38 +0100 |
| commit | 605d5b3297687cce9d3c4298c699188e61486a4c (patch) | |
| tree | 843b54037b92d5477ae26f5c3d68b44c68a0aea1 /tools/perf/scripts/python/stackcollapse.py | |
| parent | drm/i915: Use engine->context_pin() to report the intel_ring (diff) | |
| download | linux-605d5b3297687cce9d3c4298c699188e61486a4c.tar.gz linux-605d5b3297687cce9d3c4298c699188e61486a4c.zip | |
drm/i915: Avoid the branch in computing intel_ring_space()
Exploit the power-of-two ring size to compute the space across the
wraparound using a mask rather than a if. Convert to unsigned integers
so the operation is well defined.
References: https://bugs.freedesktop.org/show_bug.cgi?id=99671
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170504130846.4807-1-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions