__get_free

函数名称：Common helper functions. Never use with __GFP_HIGHMEM because the returned* address cannot represent highmem pages. Use alloc_pages and then kmap if* you need to access high mem.

函数原型：unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order)

返回类型：unsigned long

参数：

类型	参数	名称
gfp_t	gfp_mask
unsigned int	order

**调用者**
名称	描述
init_amd_gatt	Private Northbridge GATT initialization in case we cannot use the* AGP driver for some reason.
gart_iommu_init
swiotlb_late_init_with_default_size	Systems with larger DMA zones (those that don't support ISA) can* initialize the swiotlb later using the slab allocator if needed.* This should be just like above, but with some error catching.
swiotlb_late_init_with_tbl
get_zeroed_page
alloc_pages_exact	alloc_pages_exact - allocate an exact number physically-contiguous pages.@size: the number of bytes to allocate@gfp_mask: GFP flags for the allocation, must not contain __GFP_COMP* This function is similar to alloc_pages(), except that it allocates the
ima_alloc_pages	ma_alloc_pages() - Allocate contiguous pages
dquot_init
raid6_select_algo	This code uses the gfmul table as convenient data set to abuse
machine_kexec_alloc_page_tables
dma_virt_alloc
tlb_next_batch
io_mem_alloc

函数逻辑报告