uvm_km_valloc_prefer_wait  500 uvm/uvm_extern.h vaddr_t			uvm_km_valloc_prefer_wait(vm_map_t, vsize_t,
uvm_km_valloc_prefer_wait  664 uvm/uvm_km.c   	return uvm_km_valloc_prefer_wait(map, size, UVM_UNKNOWN_OFFSET);