diff options
Diffstat (limited to 'include/drm/drmP.h')
| -rw-r--r-- | include/drm/drmP.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 1b72a526ba6..febf6c530c6 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1512,14 +1512,27 @@ static __inline__ void drm_core_dropmap(struct drm_local_map *map) 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 | __GFP_ZERO, PAGE_KERNEL); + GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL); } static __inline void drm_free_large(void *ptr) |