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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2013-01-29 18:13:34 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-02-20 00:21:42 +0100 |
| commit | 10d8373064762b21e16e73bc7dfde49d68f4e31f (patch) | |
| tree | 3644f3474ae6a3afcbefd4b5c414fe34d0777135 /drivers/gpu/drm/i915/intel_display.c | |
| parent | 3d56e2d62b333aab434cba5a40e2353cac61154f (diff) | |
| download | lwn-10d8373064762b21e16e73bc7dfde49d68f4e31f.tar.gz lwn-10d8373064762b21e16e73bc7dfde49d68f4e31f.zip | |
drm/i915: Don't wait for page flips if there was GPU reset
If a GPU reset occurs while a page flip has been submitted to the ring,
the flip will never complete once the ring has been reset.
The GPU reset can be detected by sampling the reset_counter before the
flip is submitted, and then while waiting for the flip, the sampled
counter is compared with the current reset_counter value.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Move the reset_counter assignment to an earlier place in
common code as discussed on the mailing list.]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=60140
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6dfb49c25ea8..593c66801d56 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2868,10 +2868,12 @@ static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); unsigned long flags; bool pending; - if (i915_reset_in_progress(&dev_priv->gpu_error)) + if (i915_reset_in_progress(&dev_priv->gpu_error) || + intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter)) return false; spin_lock_irqsave(&dev->event_lock, flags); @@ -7250,6 +7252,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, work->enable_stall_check = true; atomic_inc(&intel_crtc->unpin_work_count); + intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); ret = dev_priv->display.queue_flip(dev, crtc, fb, obj); if (ret) |