Variables starting with `u' in osfmk/mach

• u osfmk/mach/shared_memory_server.h:104
• uniformly osfmk/mach/clock_types.h:41
• unsigned osfmk/mach/prof.defs:118
• upl osfmk/mach/upl.defs:66
• upl_offset_to_pagelist osfmk/mach/memory_object_types.h:303
• user_wired_count osfmk/mach/vm_region.h:84