併記されているコメント。
/* * These are private to the dma-mapping API. Do not use directly. * Their sole purpose is to ensure that data held in the cache * is visible to DMA, or data written by DMA to system memory is * visible to the CPU. */
#define dmac_map_area __glue(_CACHE,_dma_map_area)
#define dmac_map_area cpu_cache.dma_map_area