函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\mapping.c Create Date:2022-07-27 11:32:38
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:dma_get_merge_boundary

函数原型:unsigned long dma_get_merge_boundary(struct device *dev)

返回类型:unsigned long

参数:

类型参数名称
struct device *dev
400  ops等于get_dma_ops(dev)
402  如果非ops或非get_merge_boundary则返回:0
405  返回:get_merge_boundary(dev)
调用者
名称描述
blk_queue_can_use_dma_map_merginglk_queue_can_use_dma_map_merging - configure queue for merging segments.*@q: the request queue for the device*@dev: the device pointer for dma* Tell the block layer about merging the segments by dma map of @q.