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![]() If an interrupt has been posted, and we were spinning on the active seqno waiting for it to advance but it did not, then we can expect that it will not see its advance in the immediate future and should call into the irq-seqno barrier. We can stop spinning at this point, and leave the difficulty of handling the coherency to the caller. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170217151304.16665-3-chris@chris-wilson.co.uk |
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