dma_pool_alloc (9) - Linux Manuals

dma_pool_alloc: get a block of consistent memory

Command to display dma_pool_alloc manual in Linux: $ man 9 dma_pool_alloc

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.