diff options
Diffstat (limited to 'drivers/staging/android/ion/ion_system_heap.c')
-rw-r--r-- | drivers/staging/android/ion/ion_system_heap.c | 84 |
1 files changed, 19 insertions, 65 deletions
diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index 9849f3963e75..c92363356ae1 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -90,7 +90,7 @@ static void free_buffer_page(struct ion_system_heap *heap, { bool cached = ion_buffer_cached(buffer); - if (!cached) { + if (!cached && !(buffer->private_flags & ION_PRIV_FLAG_SHRINKER_FREE)) { struct ion_page_pool *pool = heap->pools[order_to_index(order)]; ion_page_pool_free(pool, page); } else { @@ -209,7 +209,7 @@ static void ion_system_heap_free(struct ion_buffer *buffer) /* uncached pages come from the page pools, zero them before returning for security purposes (other allocations are zerod at alloc time */ - if (!cached) + if (!cached && !(buffer->private_flags & ION_PRIV_FLAG_SHRINKER_FREE)) ion_heap_buffer_zero(buffer); for_each_sg(table->sgl, sg, table->nents, i) @@ -231,75 +231,34 @@ static void ion_system_heap_unmap_dma(struct ion_heap *heap, return; } -static struct ion_heap_ops system_heap_ops = { - .allocate = ion_system_heap_allocate, - .free = ion_system_heap_free, - .map_dma = ion_system_heap_map_dma, - .unmap_dma = ion_system_heap_unmap_dma, - .map_kernel = ion_heap_map_kernel, - .unmap_kernel = ion_heap_unmap_kernel, - .map_user = ion_heap_map_user, -}; - -static unsigned long ion_system_heap_shrink_count(struct shrinker *shrinker, - struct shrink_control *sc) +static int ion_system_heap_shrink(struct ion_heap *heap, gfp_t gfp_mask, + int nr_to_scan) { - struct ion_heap *heap = container_of(shrinker, struct ion_heap, - shrinker); - struct ion_system_heap *sys_heap = container_of(heap, - struct ion_system_heap, - heap); + struct ion_system_heap *sys_heap; int nr_total = 0; int i; - /* total number of items is whatever the page pools are holding - plus whatever's in the freelist */ - for (i = 0; i < num_orders; i++) { - struct ion_page_pool *pool = sys_heap->pools[i]; - nr_total += ion_page_pool_shrink(pool, sc->gfp_mask, 0); - } - nr_total += ion_heap_freelist_size(heap) / PAGE_SIZE; - return nr_total; - -} - -static unsigned long ion_system_heap_shrink_scan(struct shrinker *shrinker, - struct shrink_control *sc) -{ - - struct ion_heap *heap = container_of(shrinker, struct ion_heap, - shrinker); - struct ion_system_heap *sys_heap = container_of(heap, - struct ion_system_heap, - heap); - int nr_freed = 0; - int i; - - if (sc->nr_to_scan == 0) - goto end; - - /* shrink the free list first, no point in zeroing the memory if - we're just going to reclaim it */ - nr_freed += ion_heap_freelist_drain(heap, sc->nr_to_scan * PAGE_SIZE) / - PAGE_SIZE; - - if (nr_freed >= sc->nr_to_scan) - goto end; + sys_heap = container_of(heap, struct ion_system_heap, heap); for (i = 0; i < num_orders; i++) { struct ion_page_pool *pool = sys_heap->pools[i]; - - nr_freed += ion_page_pool_shrink(pool, sc->gfp_mask, - sc->nr_to_scan); - if (nr_freed >= sc->nr_to_scan) - break; + nr_total += ion_page_pool_shrink(pool, gfp_mask, nr_to_scan); } -end: - return nr_freed; - + return nr_total; } +static struct ion_heap_ops system_heap_ops = { + .allocate = ion_system_heap_allocate, + .free = ion_system_heap_free, + .map_dma = ion_system_heap_map_dma, + .unmap_dma = ion_system_heap_unmap_dma, + .map_kernel = ion_heap_map_kernel, + .unmap_kernel = ion_heap_unmap_kernel, + .map_user = ion_heap_map_user, + .shrink = ion_system_heap_shrink, +}; + static int ion_system_heap_debug_show(struct ion_heap *heap, struct seq_file *s, void *unused) { @@ -347,11 +306,6 @@ struct ion_heap *ion_system_heap_create(struct ion_platform_heap *unused) heap->pools[i] = pool; } - heap->heap.shrinker.scan_objects = ion_system_heap_shrink_scan; - heap->heap.shrinker.count_objects = ion_system_heap_shrink_count; - heap->heap.shrinker.seeks = DEFAULT_SEEKS; - heap->heap.shrinker.batch = 0; - register_shrinker(&heap->heap.shrinker); heap->heap.debug_show = ion_system_heap_debug_show; return &heap->heap; err_create_pool: |