drm,i915: Introduce drm_malloc_gfp()
I have instances where I want to use drm_malloc_ab() but with a custom
gfp mask. And with those, where I want a temporary allocation, I want to
try a high-order kmalloc() before using a vmalloc().
So refactor my usage into drm_malloc_gfp().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460113874-17366-6-git-send-email-chris@chris-wilson.co.uk
diff --git a/include/drm/drm_mem_util.h b/include/drm/drm_mem_util.h
index e42495a..70d4e22 100644
--- a/include/drm/drm_mem_util.h
+++ b/include/drm/drm_mem_util.h
@@ -54,6 +54,25 @@
GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
}
+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 | __GFP_HIGHMEM, PAGE_KERNEL);
+}
+
static __inline void drm_free_large(void *ptr)
{
kvfree(ptr);