On Tue, Sep 15, 2015 at 02:19:32PM -0700, Jesse Barnes wrote: > I used these additional fields to track down the issue I saw on HSW. > > v2: move debug fields into a substruct (Ville) > v3: clean up debug code more (Ville) > > References: https://bugs.freedesktop.org/show_bug.cgi?id=91579 > Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_drv.h | 8 ++++++-- > drivers/gpu/drm/i915/intel_sprite.c | 25 +++++++++++++++++-------- > 2 files changed, 23 insertions(+), 10 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h > index 02a755a..1df6ebf 100644 > --- a/drivers/gpu/drm/i915/intel_drv.h > +++ b/drivers/gpu/drm/i915/intel_drv.h > @@ -565,8 +565,12 @@ struct intel_crtc { > > int scanline_offset; > > - unsigned start_vbl_count; > - ktime_t start_vbl_time; > + struct { > + unsigned start_vbl_count; > + ktime_t start_vbl_time; > + int min_vbl, max_vbl; > + int scanline_start; A bit inconsistent with start_foo vs. foo_start. But othwerwise looks sane, so: Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > + } debug; > > struct intel_crtc_atomic_commit atomic; > > diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c > index 4d27243..7de121d 100644 > --- a/drivers/gpu/drm/i915/intel_sprite.c > +++ b/drivers/gpu/drm/i915/intel_sprite.c > @@ -95,7 +95,6 @@ void intel_pipe_update_start(struct intel_crtc *crtc) > max = vblank_start - 1; > > local_irq_disable(); > - crtc->start_vbl_count = 0; > > if (min <= 0 || max <= 0) > return; > @@ -134,11 +133,15 @@ void intel_pipe_update_start(struct intel_crtc *crtc) > > drm_crtc_vblank_put(&crtc->base); > > - crtc->start_vbl_time = ktime_get(); > - crtc->start_vbl_count = dev->driver->get_vblank_counter(dev, pipe); > + crtc->debug.min_vbl = min; > + crtc->debug.max_vbl = max; > + crtc->debug.scanline_start = scanline; > + crtc->debug.start_vbl_time = ktime_get(); > + crtc->debug.start_vbl_count = > + dev->driver->get_vblank_counter(dev, pipe); > > trace_i915_pipe_update_vblank_evaded(crtc, min, max, > - crtc->start_vbl_count); > + crtc->debug.start_vbl_count); > } > > /** > @@ -154,6 +157,7 @@ void intel_pipe_update_end(struct intel_crtc *crtc) > { > struct drm_device *dev = crtc->base.dev; > enum pipe pipe = crtc->pipe; > + int scanline_end = intel_get_crtc_scanline(crtc); > u32 end_vbl_count = dev->driver->get_vblank_counter(dev, pipe); > ktime_t end_vbl_time = ktime_get(); > > @@ -161,10 +165,15 @@ void intel_pipe_update_end(struct intel_crtc *crtc) > > local_irq_enable(); > > - if (crtc->start_vbl_count && crtc->start_vbl_count != end_vbl_count) > - DRM_ERROR("Atomic update failure on pipe %c (start=%u end=%u) time %lld us\n", > - pipe_name(pipe), crtc->start_vbl_count, end_vbl_count, > - ktime_us_delta(end_vbl_time, crtc->start_vbl_time)); > + if (crtc->debug.start_vbl_count && > + crtc->debug.start_vbl_count != end_vbl_count) { > + DRM_ERROR("Atomic update failure on pipe %c (start=%u end=%u) time %lld us, min %d, max %d, scanline start %d, end %d\n", > + pipe_name(pipe), crtc->debug.start_vbl_count, > + end_vbl_count, > + ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time), > + crtc->debug.min_vbl, crtc->debug.max_vbl, > + crtc->debug.scanline_start, scanline_end); > + } > } > > static void > -- > 1.9.1 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
