Macros starting with `i' in kern

• INCSTAT kern/netport_tcp.c:93
• invalid_pri kern/sched.h:133
• IOKDBG_CODE kern/kdebug.h:142
• ipc_kobject_vm_page_list kern/ipc_kobject.h:93
• ipc_kobject_vm_page_steal kern/ipc_kobject.h:96
• ipc_task_lock kern/task.h:137
• ipc_task_unlock kern/task.h:138
• ipc_thread_lock kern/thread.h:336
• ipc_thread_unlock kern/thread.h:337
• ISMAPFSFILE kern/mapfs.h:134
• itk_lock kern/task.h:134
• itk_lock_init kern/task.h:133
• itk_unlock kern/task.h:135
• ixtocp kern/netport_tcp.c:226