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drm/i915: handle faked missed interrupts as simulated hangs, too

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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>
This commit is contained in:
Daniel Vetter 2013-10-28 09:24:13 +01:00
parent ddb642fb05
commit f4adcd2477
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/i915/i915_irq.c
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@ -2258,8 +2258,12 @@ static void i915_hangcheck_elapsed(unsigned long data)
if (waitqueue_active(&ring->irq_queue)) {
/* Issue a wake-up to catch stuck h/w. */
if (!test_and_set_bit(ring->id, &dev_priv->gpu_error.missed_irq_rings)) {
DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
ring->name);
if (!(dev_priv->gpu_error.test_irq_rings & intel_ring_flag(ring)))
DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
ring->name);
else
DRM_INFO("Fake missed irq on %s\n",
ring->name);
wake_up_all(&ring->irq_queue);
}
/* Safeguard against driver failure */