From a3056906bfb98d10618122bc2ba7d142a61fcaf1 Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Fri, 13 Dec 2013 19:26:25 -0800 Subject: [PATCH] ion: remove ion_heap_alloc_pages Now that ion_vm_fault doesn't need a struct page with a nonzero refcount, there is no need allocate heap memory for cached pages using split_page. Remove the ion_heap_alloc_pages and ion_heap_free_pages helpers in favor of direct calls to alloc_pages and __free_pages, and remove the special handling in the system heap. Signed-off-by: Colin Cross Signed-off-by: John Stultz Signed-off-by: Greg Kroah-Hartman --- drivers/staging/android/ion/ion_heap.c | 27 ------------------- drivers/staging/android/ion/ion_priv.h | 13 --------- drivers/staging/android/ion/ion_system_heap.c | 7 +---- 3 files changed, 1 insertion(+), 46 deletions(-) diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c index ecc14fd9f6ac..8054611e874a 100644 --- a/drivers/staging/android/ion/ion_heap.c +++ b/drivers/staging/android/ion/ion_heap.c @@ -148,33 +148,6 @@ end: return ret; } -struct page *ion_heap_alloc_pages(struct ion_buffer *buffer, gfp_t gfp_flags, - unsigned int order) -{ - struct page *page = alloc_pages(gfp_flags, order); - - if (!page) - return page; - - if (ion_buffer_fault_user_mappings(buffer)) - split_page(page, order); - - return page; -} - -void ion_heap_free_pages(struct ion_buffer *buffer, struct page *page, - unsigned int order) -{ - int i; - - if (!ion_buffer_fault_user_mappings(buffer)) { - __free_pages(page, order); - return; - } - for (i = 0; i < (1 << order); i++) - __free_page(page + i); -} - void ion_heap_freelist_add(struct ion_heap *heap, struct ion_buffer * buffer) { rt_mutex_lock(&heap->lock); diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h index d1fa7719b240..c9b507da7708 100644 --- a/drivers/staging/android/ion/ion_priv.h +++ b/drivers/staging/android/ion/ion_priv.h @@ -216,19 +216,6 @@ int ion_heap_map_user(struct ion_heap *, struct ion_buffer *, struct vm_area_struct *); int ion_heap_buffer_zero(struct ion_buffer *buffer); -/** - * ion_heap_alloc_pages - allocate pages from alloc_pages - * @buffer: the buffer to allocate for, used to extract the flags - * @gfp_flags: the gfp_t for the allocation - * @order: the order of the allocatoin - * - * This funciton allocations from alloc pages and also does any other - * necessary operations based on the buffer->flags. For buffers which - * will be faulted in the pages are split using split_page - */ -struct page *ion_heap_alloc_pages(struct ion_buffer *buffer, gfp_t gfp_flags, - unsigned int order); - /** * ion_heap_init_deferred_free -- initialize deferred free functionality * @heap: the heap diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index bec9d4585e62..a4bcf0923be7 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -74,7 +74,7 @@ static struct page *alloc_buffer_page(struct ion_system_heap *heap, if (order > 4) gfp_flags = high_order_gfp_flags; - page = ion_heap_alloc_pages(buffer, gfp_flags, order); + page = alloc_pages(gfp_flags, order); if (!page) return 0; ion_pages_sync_for_device(NULL, page, PAGE_SIZE << order, @@ -91,15 +91,10 @@ static void free_buffer_page(struct ion_system_heap *heap, unsigned int order) { bool cached = ion_buffer_cached(buffer); - bool split_pages = ion_buffer_fault_user_mappings(buffer); - int i; if (!cached) { struct ion_page_pool *pool = heap->pools[order_to_index(order)]; ion_page_pool_free(pool, page); - } else if (split_pages) { - for (i = 0; i < (1 << order); i++) - __free_page(page + i); } else { __free_pages(page, order); } -- 2.30.2