Merge tag 'drm-for-v4.10' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main pull request for drm for 4.10 kernel.

  New drivers:
   - ZTE VOU display driver (zxdrm)
   - Amlogic Meson Graphic Controller GXBB/GXL/GXM SoCs (meson)
   - MXSFB support (mxsfb)

  Core:
   - Format handling has been reworked
   - Better atomic state debugging
   - drm_mm leak debugging
   - Atomic explicit fencing support
   - fbdev helper ops
   - Documentation updates
   - MST fbcon fixes

  Bridge:
   - Silicon Image SiI8620 driver

  Panel:
   - Add support for new simple panels

  i915:
   - GVT Device model
   - Better HDMI2.0 support on skylake
   - More watermark fixes
   - GPU idling rework for suspend/resume
   - DP Audio workarounds
   - Scheduler prep-work
   - Opregion CADL handling
   - GPU scheduler and priority boosting

  amdgfx/radeon:
   - Support for virtual devices
   - New VM manager for non-contig VRAM buffers
   - UVD powergating
   - SI register header cleanup
   - Cursor fixes
   - Powermanagement fixes

  nouveau:
   - Powermangement reworks for better voltage/clock changes
   - Atomic modesetting support
   - Displayport Multistream (MST) support.
   - GP102/104 hang and cursor fixes
   - GP106 support

  hisilicon:
   - hibmc support (BMC chip for aarch64 servers)

  armada:
   - add tracing support for overlay change
   - refactor plane support
   - de-midlayer the driver

  omapdrm:
   - Timing code cleanups

  rcar-du:
   - R8A7792/R8A7796 support
   - Misc fixes.

  sunxi:
   - A31 SoC display engine support

  imx-drm:
   - YUV format support
   - Cleanup plane atomic update

  mali-dp:
   - Misc fixes

  dw-hdmi:
   - Add support for HDMI i2c master controller

  tegra:
   - IOMMU support fixes
   - Error handling fixes

  tda998x:
   - Fix connector registration
   - Improved robustness
   - Fix infoframe/audio compliance

  virtio:
   - fix busid issues
   - allocate more vbufs

  qxl:
   - misc fixes and cleanups.

  vc4:
   - Fragment shader threading
   - ETC1 support
   - VEC (tv-out) support

  msm:
   - A5XX GPU support
   - Lots of atomic changes

  tilcdc:
   - Misc fixes and cleanups.

  etnaviv:
   - Fix dma-buf export path
   - DRAW_INSTANCED support
   - fix driver on i.MX6SX

  exynos:
   - HDMI refactoring

  fsl-dcu:
   - fbdev changes"

* tag 'drm-for-v4.10' of git://people.freedesktop.org/~airlied/linux: (1343 commits)
  drm/nouveau/kms/nv50: fix atomic regression on original G80
  drm/nouveau/bl: Do not register interface if Apple GMUX detected
  drm/nouveau/bl: Assign different names to interfaces
  drm/nouveau/bios/dp: fix handling of LevelEntryTableIndex on DP table 4.2
  drm/nouveau/ltc: protect clearing of comptags with mutex
  drm/nouveau/gr/gf100-: handle GPC/TPC/MPC trap
  drm/nouveau/core: recognise GP106 chipset
  drm/nouveau/ttm: wait for bo fence to signal before unmapping vmas
  drm/nouveau/gr/gf100-: FECS intr handling is not relevant on proprietary ucode
  drm/nouveau/gr/gf100-: properly ack all FECS error interrupts
  drm/nouveau/fifo/gf100-: recover from host mmu faults
  drm: Add fake controlD* symlinks for backwards compat
  drm/vc4: Don't use drm_put_dev
  drm/vc4: Document VEC DT binding
  drm/vc4: Add support for the VEC (Video Encoder) IP
  drm: Add TV connector states to drm_connector_state
  drm: Turn DRM_MODE_SUBCONNECTOR_xx definitions into an enum
  drm/vc4: Fix ->clock_select setting for the VEC encoder
  drm/amdgpu/dce6: Set MASTER_UPDATE_MODE to 0 in resume_mc_access as well
  drm/amdgpu: use pin rather than pin_restricted in a few cases
  ...

1 files changed, 72 insertions, 41 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_shrinker.c b/drivers/gpu/drm/i915/i915_gem_shrinker.c
index c450076d2f9b..401006b4c6a3 100644
--- a/drivers/gpu/drm/i915/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/i915_gem_shrinker.c
@@ -35,6 +35,24 @@
 #include "i915_drv.h"
 #include "i915_trace.h"
 
+static bool i915_gem_shrinker_lock(struct drm_device *dev, bool *unlock)
+{
+	switch (mutex_trylock_recursive(&dev->struct_mutex)) {
+	case MUTEX_TRYLOCK_FAILED:
+		return false;
+
+	case MUTEX_TRYLOCK_SUCCESS:
+		*unlock = true;
+		return true;
+
+	case MUTEX_TRYLOCK_RECURSIVE:
+		*unlock = false;
+		return true;
+	}
+
+	BUG();
+}
+
 static bool any_vma_pinned(struct drm_i915_gem_object *obj)
 {
 	struct i915_vma *vma;
@@ -53,8 +71,11 @@ static bool swap_available(void)
 
 static bool can_release_pages(struct drm_i915_gem_object *obj)
 {
-	/* Only shmemfs objects are backed by swap */
-	if (!obj->base.filp)
+	if (!obj->mm.pages)
+		return false;
+
+	/* Consider only shrinkable ojects. */
+	if (!i915_gem_object_is_shrinkable(obj))
 		return false;
 
 	/* Only report true if by unbinding the object and putting its pages
@@ -65,7 +86,7 @@ static bool can_release_pages(struct drm_i915_gem_object *obj)
 	 * to the GPU, simply unbinding from the GPU is not going to succeed
 	 * in releasing our pin count on the pages themselves.
 	 */
-	if (obj->pages_pin_count > obj->bind_count)
+	if (atomic_read(&obj->mm.pages_pin_count) > obj->bind_count)
 		return false;
 
 	if (any_vma_pinned(obj))
@@ -75,7 +96,14 @@ static bool can_release_pages(struct drm_i915_gem_object *obj)
 	 * discard the contents (because the user has marked them as being
 	 * purgeable) or if we can move their contents out to swap.
 	 */
-	return swap_available() || obj->madv == I915_MADV_DONTNEED;
+	return swap_available() || obj->mm.madv == I915_MADV_DONTNEED;
+}
+
+static bool unsafe_drop_pages(struct drm_i915_gem_object *obj)
+{
+	if (i915_gem_object_unbind(obj) == 0)
+		__i915_gem_object_put_pages(obj, I915_MM_SHRINKER);
+	return !READ_ONCE(obj->mm.pages);
 }
 
 /**
@@ -115,6 +143,10 @@ i915_gem_shrink(struct drm_i915_private *dev_priv,
 		{ NULL, 0 },
 	}, *phase;
 	unsigned long count = 0;
+	bool unlock;
+
+	if (!i915_gem_shrinker_lock(&dev_priv->drm, &unlock))
+		return 0;
 
 	trace_i915_gem_shrink(dev_priv, target, flags);
 	i915_gem_retire_requests(dev_priv);
@@ -158,40 +190,51 @@ i915_gem_shrink(struct drm_i915_private *dev_priv,
 		while (count < target &&
 		       (obj = list_first_entry_or_null(phase->list,
 						       typeof(*obj),
-						       global_list))) {
-			list_move_tail(&obj->global_list, &still_in_list);
+						       global_link))) {
+			list_move_tail(&obj->global_link, &still_in_list);
+			if (!obj->mm.pages) {
+				list_del_init(&obj->global_link);
+				continue;
+			}
 
 			if (flags & I915_SHRINK_PURGEABLE &&
-			    obj->madv != I915_MADV_DONTNEED)
+			    obj->mm.madv != I915_MADV_DONTNEED)
 				continue;
 
 			if (flags & I915_SHRINK_VMAPS &&
-			    !is_vmalloc_addr(obj->mapping))
+			    !is_vmalloc_addr(obj->mm.mapping))
 				continue;
 
-			if ((flags & I915_SHRINK_ACTIVE) == 0 &&
-			    i915_gem_object_is_active(obj))
+			if (!(flags & I915_SHRINK_ACTIVE) &&
+			    (i915_gem_object_is_active(obj) ||
+			     obj->framebuffer_references))
 				continue;
 
 			if (!can_release_pages(obj))
 				continue;
 
-			i915_gem_object_get(obj);
-
-			/* For the unbound phase, this should be a no-op! */
-			i915_gem_object_unbind(obj);
-			if (i915_gem_object_put_pages(obj) == 0)
-				count += obj->base.size >> PAGE_SHIFT;
-
-			i915_gem_object_put(obj);
+			if (unsafe_drop_pages(obj)) {
+				/* May arrive from get_pages on another bo */
+				mutex_lock_nested(&obj->mm.lock,
+						  I915_MM_SHRINKER);
+				if (!obj->mm.pages) {
+					__i915_gem_object_invalidate(obj);
+					list_del_init(&obj->global_link);
+					count += obj->base.size >> PAGE_SHIFT;
+				}
+				mutex_unlock(&obj->mm.lock);
+			}
 		}
-		list_splice(&still_in_list, phase->list);
+		list_splice_tail(&still_in_list, phase->list);
 	}
 
 	if (flags & I915_SHRINK_BOUND)
 		intel_runtime_pm_put(dev_priv);
 
 	i915_gem_retire_requests(dev_priv);
+	if (unlock)
+		mutex_unlock(&dev_priv->drm.struct_mutex);
+
 	/* expedite the RCU grace period to free some request slabs */
 	synchronize_rcu_expedited();
 
@@ -225,24 +268,6 @@ unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv)
 	return freed;
 }
 
-static bool i915_gem_shrinker_lock(struct drm_device *dev, bool *unlock)
-{
-	switch (mutex_trylock_recursive(&dev->struct_mutex)) {
-	case MUTEX_TRYLOCK_FAILED:
-		return false;
-
-	case MUTEX_TRYLOCK_SUCCESS:
-		*unlock = true;
-		return true;
-
-	case MUTEX_TRYLOCK_RECURSIVE:
-		*unlock = false;
-		return true;
-	}
-
-	BUG();
-}
-
 static unsigned long
 i915_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc)
 {
@@ -259,11 +284,11 @@ i915_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc)
 	i915_gem_retire_requests(dev_priv);
 
 	count = 0;
-	list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list)
+	list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_link)
 		if (can_release_pages(obj))
 			count += obj->base.size >> PAGE_SHIFT;
 
-	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
+	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_link) {
 		if (!i915_gem_object_is_active(obj) && can_release_pages(obj))
 			count += obj->base.size >> PAGE_SHIFT;
 	}
@@ -364,13 +389,19 @@ i915_gem_shrinker_oom(struct notifier_block *nb, unsigned long event, void *ptr)
 	 * being pointed to by hardware.
 	 */
 	unbound = bound = unevictable = 0;
-	list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
+	list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_link) {
+		if (!obj->mm.pages)
+			continue;
+
 		if (!can_release_pages(obj))
 			unevictable += obj->base.size >> PAGE_SHIFT;
 		else
 			unbound += obj->base.size >> PAGE_SHIFT;
 	}
-	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
+	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_link) {
+		if (!obj->mm.pages)
+			continue;
+
 		if (!can_release_pages(obj))
 			unevictable += obj->base.size >> PAGE_SHIFT;
 		else