DMA_POOL_ALLOC(9) Memory Management in Linux DMA_POOL_ALLOC(9)NAMEdma_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
canĀ“t be allocated, NULL is returned.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 DMA_POOL_ALLOC(9)