[PATCH 1/8] drm/i915: Flush GT idle status upon reset

Chris Wilson chris at chris-wilson.co.uk
Tue Jul 12 21:11:17 UTC 2016


Upon resetting the GPU, we force the engines to be idle by clearing
their request lists. However, I neglected to clear the GT active status
and so the next request following the reset was not marking the device
as busy again. (We had to wait until any outstanding retire worker
finally ran and cleared the active status.)

Fixes: 67d97da34917 ("drm/i915: Only start retire worker when idle")
Testcase: igt/pm_rps/reset
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index adeca0ec4cfb..9d8c26f42dee 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3169,6 +3169,8 @@ static void i915_gem_reset_engine_cleanup(struct intel_engine_cs *engine)
 	}
 
 	intel_ring_init_seqno(engine, engine->last_submitted_seqno);
+
+	engine->i915->gt.active_engines &= ~intel_engine_flag(engine);
 }
 
 void i915_gem_reset(struct drm_device *dev)
@@ -3186,6 +3188,7 @@ void i915_gem_reset(struct drm_device *dev)
 
 	for_each_engine(engine, dev_priv)
 		i915_gem_reset_engine_cleanup(engine);
+	mod_delayed_work(dev_priv->wq, &dev_priv->gt.idle_work, 0);
 
 	i915_gem_context_reset(dev);
 
-- 
2.8.1



More information about the Intel-gfx-trybot mailing list