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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
This commit is contained in:
Chris Wilson 2016-04-08 12:11:13 +01:00
parent eae2c43b12
commit f2a85e1975
5 changed files with 31 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2423,9 +2423,7 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj)
int n;
n = obj->base.size >> PAGE_SHIFT;
pages = kmalloc(n*sizeof(*pages), GFP_TEMPORARY | __GFP_NOWARN);
if (pages == NULL)
pages = drm_malloc_ab(n, sizeof(*pages));
pages = drm_malloc_gfp(n, sizeof(*pages), GFP_TEMPORARY);
if (pages != NULL) {
n = 0;
for_each_sg_page(obj->pages->sgl, &sg_iter,

8
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -1783,11 +1783,9 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data,
return -EINVAL;
}
exec2_list = kmalloc(sizeof(*exec2_list)*args->buffer_count,
GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY);
if (exec2_list == NULL)
exec2_list = drm_malloc_ab(sizeof(*exec2_list),
args->buffer_count);
exec2_list = drm_malloc_gfp(args->buffer_count,
sizeof(*exec2_list),
GFP_TEMPORARY);
if (exec2_list == NULL) {
DRM_DEBUG("Failed to allocate exec list for %d buffers\n",
args->buffer_count);

5
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -3401,8 +3401,9 @@ intel_rotate_fb_obj_pages(struct intel_rotation_info *rot_info,
int ret = -ENOMEM;
/* Allocate a temporary list of source pages for random access. */
page_addr_list = drm_malloc_ab(obj->base.size / PAGE_SIZE,
sizeof(dma_addr_t));
page_addr_list = drm_malloc_gfp(obj->base.size / PAGE_SIZE,
sizeof(dma_addr_t),
GFP_TEMPORARY);
if (!page_addr_list)
return ERR_PTR(ret);

16
drivers/gpu/drm/i915/i915_gem_userptr.c
View File

@ -494,10 +494,7 @@ __i915_gem_userptr_get_pages_worker(struct work_struct *_work)
ret = -ENOMEM;
pinned = 0;
pvec = kmalloc(npages*sizeof(struct page *),
GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY);
if (pvec == NULL)
pvec = drm_malloc_ab(npages, sizeof(struct page *));
pvec = drm_malloc_gfp(npages, sizeof(struct page *), GFP_TEMPORARY);
if (pvec != NULL) {
struct mm_struct *mm = obj->userptr.mm->mm;
@ -634,14 +631,11 @@ i915_gem_userptr_get_pages(struct drm_i915_gem_object *obj)
pvec = NULL;
pinned = 0;
if (obj->userptr.mm->mm == current->mm) {
pvec = kmalloc(num_pages*sizeof(struct page *),
GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY);
pvec = drm_malloc_gfp(num_pages, sizeof(struct page *),
GFP_TEMPORARY);
if (pvec == NULL) {
pvec = drm_malloc_ab(num_pages, sizeof(struct page *));
if (pvec == NULL) {
__i915_gem_userptr_set_active(obj, false);
return -ENOMEM;
}
__i915_gem_userptr_set_active(obj, false);
return -ENOMEM;
}
pinned = __get_user_pages_fast(obj->userptr.ptr, num_pages,

19
include/drm/drm_mem_util.h
View File

@ -54,6 +54,25 @@ static __inline__ void *drm_malloc_ab(size_t nmemb, size_t size)
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);