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drm/i915/gt: Don't cancel the interrupt shadow too early 

We currently want to keep the interrupt enabled until the interrupt after
which we have no more work to do. This heuristic was broken by us
kicking the irq-work on adding a completed request without attaching a
signaler -- hence it appearing to the irq-worker that an interrupt had
fired when we were idle.

Fixes: 2854d86632 ("drm/i915/gt: Replace intel_engine_transfer_stale_breadcrumbs")
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/20201123113717.20500-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-11-23 11:37:16 +00:00
parent 6cfe66eb71
commit 3aef910d26
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
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@ -229,7 +229,7 @@ static void signal_irq_work(struct irq_work *work)
* interrupt draw less ire from other users of the system and tools
* like powertop.
*/
if (b->irq_armed && list_empty(&b->signalers))
if (!signal && b->irq_armed && list_empty(&b->signalers))
__intel_breadcrumbs_disarm_irq(b);
list_for_each_entry_safe(ce, cn, &b->signalers, signal_link) {