函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\dmapool.c Create Date:2022-07-27 16:54:52
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：pool_find_page

函数原型：static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)

返回类型：struct dma_page

参数：

类型参数名称
struct dma_pool *pool
dma_addr_tdma
393  如果dma小于dma则继续下一循环
395  如果dma减dma小于allocation则返回:page
398  返回:NULL
调用者
名称描述
dma_pool_freedma_pool_free - put block back into dma pool*@pool: the dma pool holding the block*@vaddr: virtual address of block*@dma: dma address of block* Caller promises neither device nor driver will again touch this block* unless it is first re-allocated.