CONFIG_DEB_DMA_URGENT is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_DEB_DMA_URGENT.
Result is shown for kernelversion 6.7-rc3

DMA has priority over core for ext. accesses

configname: CONFIG_DEB_DMA_URGENT

Linux Kernel Configuration
└─>BF548 Specific Configuration
└─>DMA has priority over core for ext. accesses
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Treat any DEB1, DEB2 and DEB3 request as Urgent

depends
CONFIG_BF54x