From: Chris Wilson Date: Sat, 14 May 2016 06:26:34 +0000 (+0100) Subject: drm/i915: Lazily migrate the objects after hibernation X-Git-Tag: v4.8-rc1~62^2~45^2~40 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=975f7ff42edfbad53d65ad63a4f3e7ada8c7538f;p=platform%2Fkernel%2Flinux-exynos.git drm/i915: Lazily migrate the objects after hibernation Now that we mark the object domains for having been restored from the hibernation image, we not need to flush everything during resume and can instead rely on the normal domain tracking to flush only when required. The only caveat here are objects that are pinned for use by the hardware, whose contents must be coherent for when the device resumes reading from then (shortly afterwards with the driver assuming the objects are in the correct domain). References: https://bugs.freedesktop.org/show_bug.cgi?id=94722 Signed-off-by: Chris Wilson Cc: Imre Deak Cc: David Weinehall Reviewed-by: Joonas Lahtinen Tested-by: David Weinehall Link: http://patchwork.freedesktop.org/patch/msgid/1463207195-22076-3-git-send-email-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 5fb14c8..319f3b4 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -3245,7 +3245,6 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev) struct i915_ggtt *ggtt = &dev_priv->ggtt; struct drm_i915_gem_object *obj; struct i915_vma *vma; - bool flush; i915_check_and_clear_faults(dev_priv); @@ -3255,19 +3254,16 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev) /* Cache flush objects bound into GGTT and rebind them. */ list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { - flush = false; list_for_each_entry(vma, &obj->vma_list, obj_link) { if (vma->vm != &ggtt->base) continue; WARN_ON(i915_vma_bind(vma, obj->cache_level, PIN_UPDATE)); - - flush = true; } - if (flush) - i915_gem_clflush_object(obj, obj->pin_display); + if (obj->pin_display) + WARN_ON(i915_gem_object_set_to_gtt_domain(obj, false)); } if (INTEL_INFO(dev)->gen >= 8) {