Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\genalloc.c Create Date:2022-07-28 06:56:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:gen_pool_dma_alloc_algo - allocate special memory from the pool for DMA* usage with the given pool algorithm*@pool: pool to allocate from*@size: number of bytes to allocate from the pool*@dma: DMA-view physical address return value

Proto:void *gen_pool_dma_alloc_algo(struct gen_pool *pool, size_t size, dma_addr_t *dma, genpool_algo_t algo, void *data)

Type:void

Parameter:

TypeParameterName
struct gen_pool *pool
size_tsize
dma_addr_t *dma
genpool_algo_talgo
void *data
365  If Not pool Then Return NULL
368  vaddr = gen_pool_alloc_algo(pool, size, algo, data)
369  If Not vaddr Then Return NULL
372  If dma Then dma = gen_pool_virt_to_phys - return the physical address of memory*@pool: pool to allocate from*@addr: starting address of memory* Returns the physical address on success, or -1 on error.
375  Return vaddr
Caller
NameDescribe
gen_pool_dma_allocgen_pool_dma_alloc - allocate special memory from the pool for DMA usage*@pool: pool to allocate from*@size: number of bytes to allocate from the pool*@dma: dma-view physical address return value. Use %NULL if unneeded.
gen_pool_dma_alloc_aligngen_pool_dma_alloc_align - allocate special memory from the pool for DMA* usage with the given alignment*@pool: pool to allocate from*@size: number of bytes to allocate from the pool*@dma: DMA-view physical address return value
gen_pool_dma_zalloc_algogen_pool_dma_zalloc_algo - allocate special zeroed memory from the pool for* DMA usage with the given pool algorithm*@pool: pool to allocate from*@size: number of bytes to allocate from the pool*@dma: DMA-view physical address return value