From: Chris Wilson <ch...@chris-wilson.co.uk>
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 at chris-wilson.co.uk>
Cc: dri-devel at lists.freedesktop.org
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Acked-by: Dave Airlie <airlied at redhat.com>
Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 +++-----
drivers/gpu/drm/i915/i915_gem_gtt.c | 5 +++--
drivers/gpu/drm/i915/i915_gem_userptr.c | 15 ++++-----------
include/drm/drm_mem_util.h | 19 +++++++++++++++++++
4 files changed, 29 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 1328bc5..f734b3c 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1775,11 +1775,9 @@ static bool only_mappable_for_reloc(unsigned int flags)
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(sizeof(*exec2_list),
+ args->buffer_count,
+ GFP_TEMPORARY);
if (exec2_list == NULL) {
DRM_DEBUG("Failed to allocate exec list for %d buffers\n",
args->buffer_count);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 49e4f26..6af2462 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3416,8 +3416,9 @@ struct i915_vma *
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);
diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c
b/drivers/gpu/drm/i915/i915_gem_userptr.c
index 4b09c84..4c98c8c 100644
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -494,10 +494,7 @@ struct get_pages_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 +631,10 @@ struct get_pages_work {
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,
diff --git a/include/drm/drm_mem_util.h b/include/drm/drm_mem_util.h
index e42495a..741ce75 100644
--- a/include/drm/drm_mem_util.h
+++ b/include/drm/drm_mem_util.h
@@ -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);
--
1.9.1
