Merge branch 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux into drm-next

* 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux:
  drm/omap: remove null test before kfree
  drm/bochs: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN
  drm/ttm: recognize ARM arch in ioprot handler
  drm: enable render-nodes by default
  drm/ttm: remove declaration of ttm_tt_cache_flush
  drm/gem: remove misleading gfp parameter to get_pages()
  drm/omap: use __GFP_DMA32 for shmem-backed gem
  drm/i915: use shmem helpers if possible

Conflicts:
	drivers/gpu/drm/drm_stub.c

drivers/gpu/drm/bochs/bochs_mm.c

@@ -387,7 +387,7 @@ int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 
 	*obj = NULL;
 
-	size = ALIGN(size, PAGE_SIZE);
+	size = PAGE_ALIGN(size);
 	if (size == 0)
 		return -EINVAL;
 

drivers/gpu/drm/drm_gem.c

@@ -441,18 +441,31 @@ EXPORT_SYMBOL(drm_gem_create_mmap_offset);
  * drm_gem_get_pages - helper to allocate backing pages for a GEM object
  * from shmem
  * @obj: obj in question
- * @gfpmask: gfp mask of requested pages
+ *
+ * This reads the page-array of the shmem-backing storage of the given gem
+ * object. An array of pages is returned. If a page is not allocated or
+ * swapped-out, this will allocate/swap-in the required pages. Note that the
+ * whole object is covered by the page-array and pinned in memory.
+ *
+ * Use drm_gem_put_pages() to release the array and unpin all pages.
+ *
+ * This uses the GFP-mask set on the shmem-mapping (see mapping_set_gfp_mask()).
+ * If you require other GFP-masks, you have to do those allocations yourself.
+ *
+ * Note that you are not allowed to change gfp-zones during runtime. That is,
+ * shmem_read_mapping_page_gfp() must be called with the same gfp_zone(gfp) as
+ * set during initialization. If you have special zone constraints, set them
+ * after drm_gem_init_object() via mapping_set_gfp_mask(). shmem-core takes care
+ * to keep pages in the required zone during swap-in.
  */
-struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
+struct page **drm_gem_get_pages(struct drm_gem_object *obj)
 {
-	struct inode *inode;
 	struct address_space *mapping;
 	struct page *p, **pages;
 	int i, npages;
 
 	/* This is the shared memory object that backs the GEM resource */
-	inode = file_inode(obj->filp);
-	mapping = inode->i_mapping;
+	mapping = file_inode(obj->filp)->i_mapping;
 
 	/* We already BUG_ON() for non-page-aligned sizes in
 	 * drm_gem_object_init(), so we should never hit this unless
@@ -466,10 +479,8 @@ struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
 	if (pages == NULL)
 		return ERR_PTR(-ENOMEM);
 
-	gfpmask |= mapping_gfp_mask(mapping);
-
 	for (i = 0; i < npages; i++) {
-		p = shmem_read_mapping_page_gfp(mapping, i, gfpmask);
+		p = shmem_read_mapping_page(mapping, i);
 		if (IS_ERR(p))
 			goto fail;
 		pages[i] = p;
@@ -479,7 +490,7 @@ struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
 		 * __GFP_DMA32 to be set in mapping_gfp_mask(inode->i_mapping)
 		 * so shmem can relocate pages during swapin if required.
 		 */
-		BUG_ON((gfpmask & __GFP_DMA32) &&
+		BUG_ON((mapping_gfp_mask(mapping) & __GFP_DMA32) &&
 				(page_to_pfn(p) >= 0x00100000UL));
 	}
 

drivers/gpu/drm/drm_stub.c

@@ -37,8 +37,6 @@
 unsigned int drm_debug = 0;	/* 1 to enable debug output */
 EXPORT_SYMBOL(drm_debug);
 
-unsigned int drm_rnodes = 0;	/* 1 to enable experimental render nodes API */
-
 /* 1 to allow user space to request universal planes (experimental) */
 unsigned int drm_universal_planes = 0;
 
@@ -56,13 +54,11 @@ MODULE_AUTHOR(CORE_AUTHOR);
 MODULE_DESCRIPTION(CORE_DESC);
 MODULE_LICENSE("GPL and additional rights");
 MODULE_PARM_DESC(debug, "Enable debug output");
-MODULE_PARM_DESC(rnodes, "Enable experimental render nodes API");
 MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
 MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
 MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
 
 module_param_named(debug, drm_debug, int, 0600);
-module_param_named(rnodes, drm_rnodes, int, 0600);
 module_param_named(universal_planes, drm_universal_planes, int, 0600);
 module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
 module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
@@ -584,7 +580,7 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver,
 			goto err_minors;
 	}
 
-	if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) {
+	if (drm_core_check_feature(dev, DRIVER_RENDER)) {
 		ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
 		if (ret)
 			goto err_minors;

drivers/gpu/drm/gma500/gtt.c

@@ -206,7 +206,7 @@ static int psb_gtt_attach_pages(struct gtt_range *gt)
 
 	WARN_ON(gt->pages);
 
-	pages = drm_gem_get_pages(&gt->gem, 0);
+	pages = drm_gem_get_pages(&gt->gem);
 	if (IS_ERR(pages))
 		return PTR_ERR(pages);
 

drivers/gpu/drm/i915/i915_gem.c

@@ -2059,16 +2059,10 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
 			 * our own buffer, now let the real VM do its job and
 			 * go down in flames if truly OOM.
 			 */
-			gfp &= ~(__GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD);
-			gfp |= __GFP_IO | __GFP_WAIT;
-
 			i915_gem_shrink_all(dev_priv);
-			page = shmem_read_mapping_page_gfp(mapping, i, gfp);
+			page = shmem_read_mapping_page(mapping, i);
 			if (IS_ERR(page))
 				goto err_pages;
-
-			gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD;
-			gfp &= ~(__GFP_IO | __GFP_WAIT);
 		}
 #ifdef CONFIG_SWIOTLB
 		if (swiotlb_nr_tbl()) {

drivers/gpu/drm/msm/msm_gem.c

@@ -73,7 +73,7 @@ static struct page **get_pages(struct drm_gem_object *obj)
 		int npages = obj->size >> PAGE_SHIFT;
 
 		if (iommu_present(&platform_bus_type))
-			p = drm_gem_get_pages(obj, 0);
+			p = drm_gem_get_pages(obj);
 		else
 			p = get_pages_vram(obj, npages);
 

drivers/gpu/drm/omapdrm/omap_gem.c

@@ -233,11 +233,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj)
 
 	WARN_ON(omap_obj->pages);
 
-	/* TODO: __GFP_DMA32 .. but somehow GFP_HIGHMEM is coming from the
-	 * mapping_gfp_mask(mapping) which conflicts w/ GFP_DMA32.. probably
-	 * we actually want CMA memory for it all anyways..
-	 */
-	pages = drm_gem_get_pages(obj, GFP_KERNEL);
+	pages = drm_gem_get_pages(obj);
 	if (IS_ERR(pages)) {
 		dev_err(obj->dev->dev, "could not get pages: %ld\n", PTR_ERR(pages));
 		return PTR_ERR(pages);
@@ -1183,9 +1179,7 @@ int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op)
 			}
 		}
 		spin_unlock(&sync_lock);
-
-		if (waiter)
-			kfree(waiter);
+		kfree(waiter);
 	}
 	return ret;
 }
@@ -1347,6 +1341,7 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 	struct omap_drm_private *priv = dev->dev_private;
 	struct omap_gem_object *omap_obj;
 	struct drm_gem_object *obj = NULL;
+	struct address_space *mapping;
 	size_t size;
 	int ret;
 
@@ -1404,14 +1399,16 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 		omap_obj->height = gsize.tiled.height;
 	}
 
-	ret = 0;
-	if (flags & (OMAP_BO_DMA|OMAP_BO_EXT_MEM))
+	if (flags & (OMAP_BO_DMA|OMAP_BO_EXT_MEM)) {
 		drm_gem_private_object_init(dev, obj, size);
-	else
+	} else {
 		ret = drm_gem_object_init(dev, obj, size);
+		if (ret)
+			goto fail;
 
-	if (ret)
-		goto fail;
+		mapping = file_inode(obj->filp)->i_mapping;
+		mapping_set_gfp_mask(mapping, GFP_USER | __GFP_DMA32);
+	}
 
 	return obj;
 

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -500,7 +500,7 @@ pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp)
 			pgprot_val(tmp) |= _PAGE_GUARDED;
 	}
 #endif
-#if defined(__ia64__)
+#if defined(__ia64__) || defined(__arm__)
 	if (caching_flags & TTM_PL_FLAG_WC)
 		tmp = pgprot_writecombine(tmp);
 	else

drivers/gpu/drm/udl/udl_gem.c

@@ -107,14 +107,14 @@ int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	}
 }
 
-static int udl_gem_get_pages(struct udl_gem_object *obj, gfp_t gfpmask)
+static int udl_gem_get_pages(struct udl_gem_object *obj)
 {
 	struct page **pages;
 
 	if (obj->pages)
 		return 0;
 
-	pages = drm_gem_get_pages(&obj->base, gfpmask);
+	pages = drm_gem_get_pages(&obj->base);
 	if (IS_ERR(pages))
 		return PTR_ERR(pages);
 
@@ -147,7 +147,7 @@ int udl_gem_vmap(struct udl_gem_object *obj)
 		return 0;
 	}
 		
-	ret = udl_gem_get_pages(obj, GFP_KERNEL);
+	ret = udl_gem_get_pages(obj);
 	if (ret)
 		return ret;
 
@@ -205,7 +205,7 @@ int udl_gem_mmap(struct drm_file *file, struct drm_device *dev,
 	}
 	gobj = to_udl_bo(obj);
 
-	ret = udl_gem_get_pages(gobj, GFP_KERNEL);
+	ret = udl_gem_get_pages(gobj);
 	if (ret)
 		goto out;
 	ret = drm_gem_create_mmap_offset(obj);

include/drm/drmP.h

@@ -1395,7 +1395,6 @@ extern void drm_master_put(struct drm_master **master);
 extern void drm_put_dev(struct drm_device *dev);
 extern void drm_unplug_dev(struct drm_device *dev);
 extern unsigned int drm_debug;
-extern unsigned int drm_rnodes;
 extern unsigned int drm_universal_planes;
 
 extern unsigned int drm_vblank_offdelay;
@@ -1585,7 +1584,7 @@ void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
 int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
 
-struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask);
+struct page **drm_gem_get_pages(struct drm_gem_object *obj);
 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
 		bool dirty, bool accessed);
 

include/drm/ttm/ttm_bo_driver.h

@@ -652,18 +652,6 @@ extern void ttm_tt_unbind(struct ttm_tt *ttm);
  */
 extern int ttm_tt_swapin(struct ttm_tt *ttm);
 
-/**
- * ttm_tt_cache_flush:
- *
- * @pages: An array of pointers to struct page:s to flush.
- * @num_pages: Number of pages to flush.
- *
- * Flush the data of the indicated pages from the cpu caches.
- * This is used when changing caching attributes of the pages from
- * cache-coherent.
- */
-extern void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages);
-
 /**
  * ttm_tt_set_placement_caching:
  *