Chris Wilson bd5d6781a0 drm/i915: Use __ffs() in for_each_priolist for more compact code
Gcc has a slight preference if we use __ffs() to subtract one from the
index once rather than each use:

__execlists_submission_tasklet              2867    2847     -20

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226102404.29153-11-chris@chris-wilson.co.uk
2019-02-28 11:18:43 +00:00
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