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drm/i915: handle faked missed interrupts as simulated hangs, too
Otherwise QA will report this as a real hang when running igt ZZ_missed_irq. v2: Actually test the right stuff and really shut up the DRM_ERROR output ... Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70747 Tested-by: lu hua <huax.lu@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -2258,8 +2258,12 @@ static void i915_hangcheck_elapsed(unsigned long data)
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if (waitqueue_active(&ring->irq_queue)) {
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/* Issue a wake-up to catch stuck h/w. */
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if (!test_and_set_bit(ring->id, &dev_priv->gpu_error.missed_irq_rings)) {
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DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
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ring->name);
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if (!(dev_priv->gpu_error.test_irq_rings & intel_ring_flag(ring)))
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DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
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ring->name);
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else
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DRM_INFO("Fake missed irq on %s\n",
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ring->name);
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wake_up_all(&ring->irq_queue);
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}
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/* Safeguard against driver failure */
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