dma_pool_alloc

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

dma_pool_alloc - get a block of consistent memory

SYNOPSIS

void * dma_pool_alloc(struct dma_pool * pool, gfp_t mem_flags, dma_addr_t * handle);

ARGUMENTS

pool

dma pool that will produce the block

mem_flags

GFP_* bitmask

handle

pointer to dma address of block

DESCRIPTION

This returns the kernel virtual address of a currently unused block, and reports its dma address through the handle. If such a memory block can't be allocated, NULL is returned.