CONFIG_DMA_DECLARE_COHERENT (not configurable)

modulename: coherent.ko

configname: CONFIG_DMA_DECLARE_COHERENT

Linux Kernel Configuration
└─>Library routines
└─>DMA_DECLARE_COHERENT
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
source code:
kernel/dma/coherent.c