Exemplos de alloc_buffer_page em C++ (Cpp)

Exemplo n.º 1

Arquivo: ion_system_heap.c Projeto: boa19861105/BOA_Butterfly2_L5.1_kernel

static struct page_info *alloc_largest_available(struct ion_system_heap *heap,
						 struct ion_buffer *buffer,
						 unsigned long size,
						 unsigned int max_order)
{
	struct page *page;
	struct page_info *info;
	int i;
	bool from_pool;
	for (i = 0; i < num_orders; i++) {
		if (size < order_to_size(orders[i]))
			continue;
		if (max_order < orders[i])
			continue;

		page = alloc_buffer_page(heap, buffer, orders[i], &from_pool);
		if (!page)
			continue;

		info = kmalloc(sizeof(struct page_info), GFP_KERNEL);
		if (info) {
			info->page = page;
			info->order = orders[i];
			info->from_pool = from_pool;
		}
		return info;
	}
	return NULL;
}

Exemplo n.º 2

Arquivo: kgsl_heap.c Projeto: crimsonthunder/Samsung_mm

struct page *kgsl_heap_alloc(unsigned long size)
{
	struct page *page;
	int i;

	for (i = 0; i < num_orders; i++) {
		if (size < order_to_size(orders[i]))
			continue;

		page = alloc_buffer_page(orders[i]);
		if (!page)
			continue;

		return page;
	}


	return NULL;
}

Exemplo n.º 3

Arquivo: ion_system_heap.c Projeto: 4pao/android_kernel_hardkernel_odroidxu3

static struct page_info *alloc_largest_available(struct ion_system_heap *heap,
						 struct ion_buffer *buffer,
						 unsigned long size,
						 unsigned int max_order)
{
	struct page *page;
	struct page_info *info;
	int i;
	struct ion_page_pool *pool;
	bool from_pool = false;

	info = kmalloc(sizeof(struct page_info), GFP_KERNEL);
	if (!info)
		return NULL;

	for (i = 0; i < num_orders; i++) {
		if (size < order_to_size(orders[i]))
			continue;
		if (max_order < orders[i])
			continue;

		if (!ion_buffer_cached(buffer)) {
			pool = heap->pools[order_to_index(orders[i])];
			mutex_lock(&pool->mutex);
			if ((pool->high_count > 0) || (pool->low_count > 0))
				from_pool = true;
			mutex_unlock(&pool->mutex);
		}

		page = alloc_buffer_page(heap, buffer, orders[i]);
		if (!page)
			continue;

		info->page = page;
		info->order = orders[i];
		info->from_pool = from_pool;
		INIT_LIST_HEAD(&info->list);
		return info;
	}
	kfree(info);

	return NULL;
}