CONFIG_FB_CFB_COPYAREA (not configurable)

modulename: cfbcopyarea.ko

configname: CONFIG_FB_CFB_COPYAREA

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Frame buffer Devices
└─>Support for frame buffer devices
└─>FB_CFB_COPYAREA
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Include the cfb_copyarea function for generic software area copying.
This is used by drivers that don't provide their own (accelerated)
version.

source code:
drivers/video/fbdev/core/cfbcopyarea.c