From: Chris Wilson Date: Fri, 8 Apr 2016 11:11:13 +0000 (+0100) Subject: drm,i915: Introduce drm_malloc_gfp() X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f2a85e1975d80d1b535b4c21517ed15226b96c87;p=linux-beck.git 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 Cc: dri-devel@lists.freedesktop.org Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Acked-by: Dave Airlie Link: http://patchwork.freedesktop.org/patch/msgid/1460113874-17366-6-git-send-email-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 55ad50bc3921..eaf906875cd8 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -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, diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 0ee61fd014df..6ee4f00f620c 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -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); diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index da6e3a533095..c5cb04907525 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -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); diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index 54088a4d6498..d59741492341 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -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, diff --git a/include/drm/drm_mem_util.h b/include/drm/drm_mem_util.h index e42495ad8136..70d4e221a3ad 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);