DMA_POOL_ALLOC(9) Memory Management in Linux DMA_POOL_ALLOC(9)
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.
COPYRIGHT Kernel Hackers Manual 2.6. April 2016 DMA_POOL_ALLOC(9)