C++ (Cpp) ion_heap_high_order_page_zero примеры использования

Пример #1

Файл: ion_page_pool.c Проект: AD5GB/wicked_kernel_lge_hammerhead

static void *ion_page_pool_alloc_pages(struct ion_page_pool *pool)
{
	struct page *page;
	struct scatterlist sg;

	page = alloc_pages(pool->gfp_mask & ~__GFP_ZERO, pool->order);

	if (!page)
		return NULL;

	if (pool->gfp_mask & __GFP_ZERO)
		if (ion_heap_high_order_page_zero(
				page, pool->order, pool->should_invalidate))
			goto error_free_pages;

	sg_init_table(&sg, 1);
	sg_set_page(&sg, page, PAGE_SIZE << pool->order, 0);
	sg_dma_address(&sg) = sg_phys(&sg);
	dma_sync_sg_for_device(NULL, &sg, 1, DMA_BIDIRECTIONAL);

	return page;
error_free_pages:
	__free_pages(page, pool->order);
	return NULL;
}

Пример #2

Файл: ion_page_pool.c Проект: miuihu/android_kernel_xiaomi_redmi2

static void *ion_page_pool_alloc_pages(struct ion_page_pool *pool)
{
	struct page *page;

	page = alloc_pages(pool->gfp_mask & ~__GFP_ZERO, pool->order);

	if (!page)
		return NULL;

	if (pool->gfp_mask & __GFP_ZERO)
		if (ion_heap_high_order_page_zero(page, pool->order))
			goto error_free_pages;

	return page;
error_free_pages:
	__free_pages(page, pool->order);
	return NULL;
}