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0b02befa82
In the next patch, we will begin processing the CSB from inside the submission path (underneath an irqsoff section, and even from inside interrupt handlers). This means that updating the execlists->port[] will no longer be serialised by the tasklet but needs to be locked by the engine->timeline.lock instead. Pull dequeue and submit under the same lock for protection. (An alternate future plan is to keep the in/out arrays separate for concurrent processing and reduced lock coverage.) 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/20180628201211.13837-2-chris@chris-wilson.co.uk |
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