CONFIG_SND_DMA_SGBUF 50 include/sound/memalloc.h #ifdef CONFIG_SND_DMA_SGBUF CONFIG_SND_DMA_SGBUF 72 include/sound/memalloc.h #ifdef CONFIG_SND_DMA_SGBUF CONFIG_SND_DMA_SGBUF 985 include/sound/pcm.h #ifdef CONFIG_SND_DMA_SGBUF