drm/ttm: use drm calloc large and free large

Now that the drm core can do this, lets just use it, split the code out
so TTM doesn't have to drag all of drmP.h in.

Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/ttm/ttm_tt.c

@@ -28,13 +28,13 @@
  * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  */
 
-#include <linux/vmalloc.h>
 #include <linux/sched.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
 #include <linux/file.h>
 #include <linux/swap.h>
 #include "drm_cache.h"
+#include "drm_mem_util.h"
 #include "ttm/ttm_module.h"
 #include "ttm/ttm_bo_driver.h"
 #include "ttm/ttm_placement.h"
@@ -43,32 +43,15 @@ static int ttm_tt_swapin(struct ttm_tt *ttm);
 
 /**
  * Allocates storage for pointers to the pages that back the ttm.
- *
- * Uses kmalloc if possible. Otherwise falls back to vmalloc.
  */
 static void ttm_tt_alloc_page_directory(struct ttm_tt *ttm)
 {
-	unsigned long size = ttm->num_pages * sizeof(*ttm->pages);
+	ttm->pages = drm_calloc_large(ttm->num_pages, sizeof(*ttm->pages));
-	ttm->pages = NULL;
-
-	if (size <= PAGE_SIZE)
-		ttm->pages = kzalloc(size, GFP_KERNEL);
-
-	if (!ttm->pages) {
-		ttm->pages = vmalloc_user(size);
-		if (ttm->pages)
-			ttm->page_flags |= TTM_PAGE_FLAG_VMALLOC;
-	}
 }
 
 static void ttm_tt_free_page_directory(struct ttm_tt *ttm)
 {
-	if (ttm->page_flags & TTM_PAGE_FLAG_VMALLOC) {
+	drm_free_large(ttm->pages);
-		vfree(ttm->pages);
-		ttm->page_flags &= ~TTM_PAGE_FLAG_VMALLOC;
-	} else {
-		kfree(ttm->pages);
-	}
 	ttm->pages = NULL;
 }
 

include/drm/drmP.h

@@ -1545,39 +1545,7 @@ static __inline__ void drm_core_dropmap(struct drm_local_map *map)
 {
 }
 
-
+#include "drm_mem_util.h"
-static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
-{
-	if (size != 0 && nmemb > ULONG_MAX / size)
-		return NULL;
-
-	if (size * nmemb <= PAGE_SIZE)
-	    return kcalloc(nmemb, size, GFP_KERNEL);
-
-	return __vmalloc(size * nmemb,
-			 GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
-}
-
-/* Modeled after cairo's malloc_ab, it's like calloc but without the zeroing. */
-static __inline__ void *drm_malloc_ab(size_t nmemb, size_t size)
-{
-	if (size != 0 && nmemb > ULONG_MAX / size)
-		return NULL;
-
-	if (size * nmemb <= PAGE_SIZE)
-	    return kmalloc(nmemb * size, GFP_KERNEL);
-
-	return __vmalloc(size * nmemb,
-			 GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
-}
-
-static __inline void drm_free_large(void *ptr)
-{
-	if (!is_vmalloc_addr(ptr))
-		return kfree(ptr);
-
-	vfree(ptr);
-}
 /*@}*/
 
 #endif				/* __KERNEL__ */

include/drm/drm_mem_util.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *     Jesse Barnes <jbarnes@virtuousgeek.org>
+ *
+ */
+#ifndef _DRM_MEM_UTIL_H_
+#define _DRM_MEM_UTIL_H_
+
+#include <linux/vmalloc.h>
+
+static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
+{
+	if (size != 0 && nmemb > ULONG_MAX / size)
+		return NULL;
+
+	if (size * nmemb <= PAGE_SIZE)
+	    return kcalloc(nmemb, size, GFP_KERNEL);
+
+	return __vmalloc(size * nmemb,
+			 GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
+}
+
+/* Modeled after cairo's malloc_ab, it's like calloc but without the zeroing. */
+static __inline__ void *drm_malloc_ab(size_t nmemb, size_t size)
+{
+	if (size != 0 && nmemb > ULONG_MAX / size)
+		return NULL;
+
+	if (size * nmemb <= PAGE_SIZE)
+	    return kmalloc(nmemb * size, GFP_KERNEL);
+
+	return __vmalloc(size * nmemb,
+			 GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
+}
+
+static __inline void drm_free_large(void *ptr)
+{
+	if (!is_vmalloc_addr(ptr))
+		return kfree(ptr);
+
+	vfree(ptr);
+}
+
+#endif

include/drm/ttm/ttm_bo_driver.h

@@ -115,7 +115,6 @@ struct ttm_backend {
 	struct ttm_backend_func *func;
 };
 
-#define TTM_PAGE_FLAG_VMALLOC         (1 << 0)
 #define TTM_PAGE_FLAG_USER            (1 << 1)
 #define TTM_PAGE_FLAG_USER_DIRTY      (1 << 2)
 #define TTM_PAGE_FLAG_WRITE           (1 << 3)