centos man page for kfifo_dma_out_prepare

Query: kfifo_dma_out_prepare

OS: centos

Section: 9

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

KFIFO_DMA_OUT_PREPAR(9) 					    FIFO Buffer 					   KFIFO_DMA_OUT_PREPAR(9)

NAME
kfifo_dma_out_prepare - setup a scatterlist for DMA output
SYNOPSIS
kfifo_dma_out_prepare(fifo, sgl, nents, len);
ARGUMENTS
fifo address of the fifo to be used sgl pointer to the scatterlist array nents number of entries in the scatterlist array len number of elements to transfer
DESCRIPTION
This macro fills a scatterlist for DMA output which at most len bytes to transfer. It returns the number entries in the scatterlist array. A zero means there is no space available and the scatterlist is not filled. Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macros.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 KFIFO_DMA_OUT_PREPAR(9)
Related Man Pages
struct_usb_request(9) - centos
usb_buffer_map_sg(9) - centos
cxy(4) - ultrix
fifo(n) - osx
fifo(7) - osx
Similar Topics in the Unix Linux Community
How to increment version inside a file?
Docker learning Phase-I
Shopt -s histappend
CentOS 6 ran out of space, need to reclaim it
Please Welcome Dave Munro to the Moderator Team!