Enable debugging of DMA-API usage
modulename: debug.ko
configname: CONFIG_DMA_API_DEBUG
Linux Kernel Configuration
└─>Library routines
└─>Enable debugging of DMA-API usage
In linux kernel since version 2.6.30 (release Date: 2009-06-09)
Enable this option to debug the use of the DMA API by device drivers.
With this option you will be able to detect common bugs in device
drivers like double-freeing of DMA mappings or freeing mappings that
were never allocated.
This option causes a performance degradation. Use only if you want to
debug device drivers and dma interactions.
If unsure, say N.
With this option you will be able to detect common bugs in device
drivers like double-freeing of DMA mappings or freeing mappings that
were never allocated.
This option causes a performance degradation. Use only if you want to
debug device drivers and dma interactions.
If unsure, say N.