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We want to replace the inline wait_for() with an out-of-line hybrid busy/sleep wait_for() in the hopes of speeding up the communication wit the PCode unit. Indeed, on my i5-2500s, __gen6_update_ring_freq improves from 6,080,661ns to 8172ns. v2: Missed using _fw variants for sandybridge_pcode_read() Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1467297225-21379-2-git-send-email-chris@chris-wilson.co.uk |
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