DEFINE_DYNAMIC_DEBUG_BITGRPS(fsname, var, bitmap_desc, bitmap)
allows users to create a drm.debug style (bitmap) sysfs interface,
mapping each bit to a group of pr_debugs, matching on their formats.
This works well when the formats systematically include a prefix
string such as ERR|WARN|INFO, etc.
DEFINE_DYNAMIC_DEBUG_BITGRPS(fsname, var, bitmap_desc, bitmap)
allows users to create a drm.debug style (bitmap) sysfs interface,
mapping each bit to a group of pr_debugs, matching on their formats.
This works well when the formats systematically include a prefix
string such as ERR|WARN|INFO, etc.