C++ (Cpp) ttm_get_pages示例

示例#1

文件： ttm_tt.c 项目： freedesktop-unofficial-mirror/mesa__vmwgfx

static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index)
{
	struct page *p;
	struct list_head h;
	struct ttm_mem_global *mem_glob = ttm->glob->mem_glob;
	int ret;

	while (NULL == (p = ttm->pages[index])) {

		INIT_LIST_HEAD(&h);

		ret = ttm_get_pages(&h, ttm->page_flags, ttm->caching_state, 1);

		if (ret != 0)
			return NULL;

		p = list_first_entry(&h, struct page, lru);

		ret = ttm_mem_global_alloc_page(mem_glob, p, false, false);
		if (unlikely(ret != 0))
			goto out_err;

		if (PageHighMem(p))
			ttm->pages[--ttm->first_himem_page] = p;
		else
			ttm->pages[++ttm->last_lomem_page] = p;
	}
	return p;
out_err:
	put_page(p);
	return NULL;
}

示例#2

文件： ttm_page_alloc.c 项目： ashmew2/kolibriosSVN

int ttm_pool_populate(struct ttm_tt *ttm)
{
	struct ttm_mem_global *mem_glob = ttm->glob->mem_glob;
	unsigned i;
	int ret;

	if (ttm->state != tt_unpopulated)
		return 0;

	for (i = 0; i < ttm->num_pages; ++i) {
		ret = ttm_get_pages(&ttm->pages[i], 1,
				    ttm->page_flags,
				    ttm->caching_state);
		if (ret != 0) {
			ttm_pool_unpopulate(ttm);
			return -ENOMEM;
		}
	}
	ttm->state = tt_unbound;
	return 0;
}