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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2013-05-24 17:16:07 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-05-31 20:53:54 +0200 |
| commit | 92cab7345131db7af18f630a799ce6b2e8e624c5 (patch) | |
| tree | d61c1ac94941db3bdcbbae8753a2864557ed0b67 /drivers/gpu/drm/i915/i915_irq.c | |
| parent | 79ee20dc85072b0edfb5e461799d192a9cc9d422 (diff) | |
| download | lwn-92cab7345131db7af18f630a799ce6b2e8e624c5.tar.gz lwn-92cab7345131db7af18f630a799ce6b2e8e624c5.zip | |
drm/i915: track ring progression using seqnos
Instead of relying in acthd, track ring seqno progression
to detect if ring has hung.
v2: put hangcheck stuff inside struct (Chris Wilson)
v3: initialize hangcheck.seqno (Ben Widawsky)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0e5c9b0cc5a6..004ad3455992 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2384,22 +2384,19 @@ void i915_hangcheck_elapsed(unsigned long data) { struct drm_device *dev = (struct drm_device *)data; drm_i915_private_t *dev_priv = dev->dev_private; - uint32_t acthd[I915_NUM_RINGS], instdone[I915_NUM_INSTDONE_REG]; struct intel_ring_buffer *ring; bool err = false, idle; int i; + u32 seqno[I915_NUM_RINGS]; + bool work_done; if (!i915_enable_hangcheck) return; - memset(acthd, 0, sizeof(acthd)); idle = true; for_each_ring(ring, dev_priv, i) { - u32 seqno; - - seqno = ring->get_seqno(ring, false); - idle &= i915_hangcheck_ring_idle(ring, seqno, &err); - acthd[i] = intel_ring_get_active_head(ring); + seqno[i] = ring->get_seqno(ring, false); + idle &= i915_hangcheck_ring_idle(ring, seqno[i], &err); } /* If all work is done then ACTHD clearly hasn't advanced. */ @@ -2415,20 +2412,19 @@ void i915_hangcheck_elapsed(unsigned long data) return; } - i915_get_extra_instdone(dev, instdone); - if (memcmp(dev_priv->gpu_error.last_acthd, acthd, - sizeof(acthd)) == 0 && - memcmp(dev_priv->gpu_error.prev_instdone, instdone, - sizeof(instdone)) == 0) { + work_done = false; + for_each_ring(ring, dev_priv, i) { + if (ring->hangcheck.seqno != seqno[i]) { + work_done = true; + ring->hangcheck.seqno = seqno[i]; + } + } + + if (!work_done) { if (i915_hangcheck_hung(dev)) return; } else { dev_priv->gpu_error.hangcheck_count = 0; - - memcpy(dev_priv->gpu_error.last_acthd, acthd, - sizeof(acthd)); - memcpy(dev_priv->gpu_error.prev_instdone, instdone, - sizeof(instdone)); } repeat: |