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drm/i915: Drop unused engine->irq_seqno_barrier w/a

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Now that we have eliminated the CPU-side irq_seqno_barrier by moving the
delays on the GPU before emitting the MI_USER_INTERRUPT, we can remove
the engine->irq_seqno_barrier infrastructure. Though intentionally
slowing down the GPU is nasty, so is the code we can now remove!

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/20181228171641.16531-6-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2018-12-28 17:16:41 +00:00
parent 835051d397
commit 1216e3c3af
9 changed files with 1 additions and 161 deletions
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7
drivers/gpu/drm/i915/i915_irq.c
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@@ -1189,13 +1189,6 @@ static void notify_ring(struct intel_engine_cs *engine)
rq = i915_request_get(waiter);
tsk = wait->tsk;
} else {
if (engine->irq_seqno_barrier &&
i915_seqno_passed(seqno, wait->seqno - 1)) {
set_bit(ENGINE_IRQ_BREADCRUMB,
&engine->irq_posted);
tsk = wait->tsk;
}
}
engine->breadcrumbs.irq_count++;