forked from KolibriOS/kolibrios
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
|
/*
|
||
|
|
* 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_
|
||
|
|
|
||
|
|
static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
|
||
|
|
{
|
||
|
|
void *p;
|
||
|
|
|
||
|
|
if (size != 0 && nmemb > SIZE_MAX / size)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if (size * nmemb <= PAGE_SIZE)
|
||
|
|
return calloc(nmemb, size);
|
||
|
|
|
||
|
|
p = (void*)KernelAlloc(size * nmemb);
|
||
|
|
if ( p != NULL )
|
||
|
|
memset(p, 0,size * nmemb);
|
||
|
|
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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 (void*)KernelAlloc(size * nmemb);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void drm_free_large(void *ptr)
|
||
|
|
{
|
||
|
|
if( ((addr_t)ptr & 0xFFF) == 0 ) // !!!
|
||
|
|
KernelFree(ptr);
|
||
|
|
else
|
||
|
|
kfree(ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|