CONFIG_DRM_BUDDY (not configurable)

modulename: drm_buddy.ko

configname: CONFIG_DRM_BUDDY

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>DRM_BUDDY
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
A page based buddy allocator

source code: