函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\scatterlist.c Create Date:2022-07-27 07:17:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：sg_alloc_table - Allocate and initialize an sg table*@table: The sg table header to use*@nents: Number of entries in sg list*@gfp_mask: GFP allocation mask* Description:* Allocate and initialize an sg table. If @nents@ is larger than

函数原型：int sg_alloc_table(struct sg_table *table, unsigned int nents, gfp_t gfp_mask)

返回类型：int

参数：

类型参数名称
struct sg_table *table
unsigned intnents
gfp_tgfp_mask
359  ret等于__sg_alloc_table - Allocate and initialize an sg table with given allocator*@table: The sg table header to use*@nents: Number of entries in sg list*@max_ents: The maximum number of entries the allocator returns per call*@nents_first_chunk: Number of
361  如果此条件成立可能性小(为编译器优化)(ret)则__sg_free_table - Free a previously mapped sg table*@table: The sg table header to use*@max_ents: The maximum number of entries per single scatterlist*@nents_first_chunk: Number of entries int the (preallocated) first* scatterlist chunk, 0 means no such
364  返回:ret
调用者
名称描述
__sg_alloc_table_from_pages__sg_alloc_table_from_pages - Allocate and initialize an sg table from* an array of pages*@sgt: The sg table header to use*@pages: Pointer to an array of page pointers*@n_pages: Number of pages in the pages array*@offset: Offset from start of the first
dma_direct_get_sgtable
dma_common_get_sgtableCreate scatter-list for the already allocated DMA buffer.