drm: replace drm_[cm]alloc* by kvmalloc alternatives

/*

 * 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 > SIZE_MAX / size)

		return NULL;

	if (size * nmemb <= PAGE_SIZE)

	    return kcalloc(nmemb, size, GFP_KERNEL);

	return vzalloc(size * nmemb);

}

/* 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 > SIZE_MAX / size)

		return NULL;

	if (size * nmemb <= PAGE_SIZE)

	    return kmalloc(nmemb * size, GFP_KERNEL);

	return vmalloc(size * nmemb);

}

static __inline__ void *drm_malloc_gfp(size_t nmemb, size_t size, gfp_t gfp)

{

	if (size != 0 && nmemb > SIZE_MAX / size)

		return NULL;

	if (size * nmemb <= PAGE_SIZE)

		return kmalloc(nmemb * size, gfp);

	if (gfp & __GFP_RECLAIMABLE) {

		void *ptr = kmalloc(nmemb * size,

				    gfp | __GFP_NOWARN | __GFP_NORETRY);

		if (ptr)

			return ptr;

	}

	return __vmalloc(size * nmemb, gfp, PAGE_KERNEL);

}

static __inline void drm_free_large(void *ptr)

{

	kvfree(ptr);

}

#endif