CONFIG_DMA_VIRTUAL_CHANNELS (not configurable)

modulename: virt-dma.ko

configname: CONFIG_DMA_VIRTUAL_CHANNELS

Linux Kernel Configuration
└─>Device Drivers
└─>DMA Engine support
└─>DMA_VIRTUAL_CHANNELS
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/dma/virt-dma.c