if NCPUS > 1 stuff is not being considered so far.
i386/i386at/boothdr.S: _start
i386/i386at/boothdr.S: boot_entry
i386/i386at/model_dep.c: c_boot_entry
i386/i386at/boothdr.S: discover_x86_cpu_type
i386/i386at/model_dep.c: i386at_init
i386/i386/pic.c: picinit
i386/i386at/model_dep.c: mem_size_init
i386/intel/pmap.c: pmap_bootstrap
i386/i386/gdt.c: gdt_init
i386/i386/idt.c: idt_init
i386/i386at/int_init.c: int_init
i386/i386/ldt.c: ldt_init
i386/i386/ktss.c: ktss_init
kern/startup.c: setup_main
kern/debug.c: panic_init
kern/printf.c: printf_init
kern/sched_prim.c: sched_init
kern/sched_prim.c: wait_queue_init
kern/processor.c: pset_sys_bootstrap
kern/ast.c: ast_init
vm/vm_init.c: vm_mem_bootstrap
vm/vm_resident.c: vm_page_bootstrap
vm/vm_resident.c: pmap_startup
kern/zalloc.c: zone_bootstrap
vm/vm_object.c: vm_object_bootstrap
vm/vm_external.c: vm_external_module_initialize
vm/vm_map.c: vm_map_init
vm/vm_kern.c: kmem_init
i386/intel/pmap.c: pmap_init
kern/zalloc.c: zone_init
kern/kalloc.c: kalloc_init
vm/vm_fault.c: vm_fault_init
vm/vm_resident.c: vm_page_module_init
vm/memory_object.c: memory_manager_default_init
ipc/ipc_init.c: ipc_bootstrap
ipc/ipc_table.c: ipc_table_init
ipc/ipc_notify.c: ipc_notify_init
ipc/ipc_hash.c: ipc_hash_init
ipc/ipc_marequest.c: ipc_marequest_init
vm/vm_init.c: vm_mem_init
vm/vm_object.c: vm_object_init
ipc/ipc_init.c: ipc_init
kern/ipc_host.c: ipc_host_init
kern/ipc_host.c: ipc_pset_init
kern/ipc_host.c: ipc_pset_enable
kern/ipc_host.c: ipc_processor_init
i386/intel/pmap.h: PMAP_ACTIVATE_KERNEL
kern/timer.c: init_timers
kern/mach_clock.c: init_timeout
kern/xpr.c: xprbootstrap
kern/time_stamp.c: timestamp_init
kern/mach_clock.c: mapable_time_init
i386/i386at/model_dep.c: machine_init
device/cons.c: cninit
i386/i386/fpu.c: init_fpu
linux/dev/init/main.c: linux_init
linux/dev/arch/i386/kernel/irq.c: init_IRQ
linux/dev/arch/i386/kernel/irq.c: reserve_mach_irqs
linux/dev/kernel/sched.c: linux_sched_init
linux/dev/init/main.c: calibrate_delay
linux/dev/glue/kmem.c: linux_kmem_init
linux/src/drivers/pci/pci.c: pci_init
linux/src/arch/i386/kernel/bios32.c: pcibios_init
linux/src/drivers/pci/pci.c: scan_bus
linux/src/arch/i386/kernel/bios32.c: pcibios_fixup
linux/dev/glue/net.c: linux_net_emulation_init
linux/dev/drivers/block/genhd.c: device_setup
linux/dev/glue/block.c: blk_dev_init
linux/src/drivers/block/ide.c: ide_init
linux/dev/drivers/block/floppy.c: floppy_init
linux/src/drivers/scsi/scsi.c: scsi_dev_init
linux/dev/net/core/dev.c: net_dev_init
linux/pcmcia-cs/glue/pcmcia.c: pcmcia_init
i386/i386at/autoconf.c: probeio
i386/i386at/model_dep.c: inittodr
i386/intel/pmap.c: pmap_unmap_page_zero
kern/task.c: task_init
kern/syscall_emulation.c: eml_init
kern/thread.c: thread_init
i386/i386/pcb.c: pcb_module_init
i386/i386/fpu.c: fpu_module_init
i386/i386/iopb.c: iopb_init
kern/thread_swap.c: swapper_init
kern/sched_prim.c: recompute_priorities
kern/mach_factor.c: compute_mach_factor
kern/startup.c: start_kernel_threads
[...]
kern/startup.c: cpu_launch_first_thread
i386/i386at/model_dep.c: startrtclock
i386/i386/pit.c: clkstart
i386/intel/pmap.h: PMAP_ACTIVATE_KERNEL
i386/i386/pcb.c: load_context
[...]
kern/startup.c: start_kernel_threads
Threads get created.
kern/sched_prim.c: idle_thread
One for each CPU.
kern/thread.c: reaper_thread
kern/thread_swap.c: swapin_thread
kern/sched_prim.c: sched_thread
[...]
kern/bootstrap.c: bootstrap_create
[...]
vm_pageout
Does not return.