10384fff8SJason Evans /*- 244116885SWarner Losh * Copyright (C) 2000-2004 The FreeBSD Project. All rights reserved. 30384fff8SJason Evans * 444116885SWarner Losh * Redistribution and use in source and binary forms, with or without 544116885SWarner Losh * modification, are permitted provided that the following conditions 644116885SWarner Losh * are met: 744116885SWarner Losh * 1. Redistributions of source code must retain the above copyright 844116885SWarner Losh * notice, this list of conditions and the following disclaimer. 944116885SWarner Losh * 2. Redistributions in binary form must reproduce the above copyright 1044116885SWarner Losh * notice, this list of conditions and the following disclaimer in the 1144116885SWarner Losh * documentation and/or other materials provided with the distribution. 1244116885SWarner Losh * 1344116885SWarner Losh * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1444116885SWarner Losh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1544116885SWarner Losh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1644116885SWarner Losh * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 1744116885SWarner Losh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1844116885SWarner Losh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1944116885SWarner Losh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2044116885SWarner Losh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2144116885SWarner Losh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2244116885SWarner Losh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2344116885SWarner Losh * SUCH DAMAGE. 240384fff8SJason Evans */ 250384fff8SJason Evans 26677b542eSDavid E. O'Brien #include <sys/cdefs.h> 27677b542eSDavid E. O'Brien __FBSDID("$FreeBSD$"); 28677b542eSDavid E. O'Brien 290384fff8SJason Evans #include <sys/param.h> 300384fff8SJason Evans #include <sys/systm.h> 310384fff8SJason Evans #include <sys/kernel.h> 32ba228f6dSJohn Baldwin #include <sys/kthread.h> 33fb919e4dSMark Murray #include <sys/lock.h> 34fb919e4dSMark Murray #include <sys/mutex.h> 35fb919e4dSMark Murray #include <sys/proc.h> 360384fff8SJason Evans #include <sys/resourcevar.h> 37b43179fbSJeff Roberson #include <sys/sched.h> 380384fff8SJason Evans #include <sys/unistd.h> 396804a3abSJulian Elischer #ifdef SMP 406804a3abSJulian Elischer #include <sys/smp.h> 416804a3abSJulian Elischer #endif 420384fff8SJason Evans 430384fff8SJason Evans static void idle_setup(void *dummy); 440384fff8SJason Evans SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL) 450384fff8SJason Evans 460384fff8SJason Evans /* 477ecfc090SJohn Baldwin * Set up per-cpu idle process contexts. The AP's shouldn't be running or 487ecfc090SJohn Baldwin * accessing their idle processes at this point, so don't bother with 497ecfc090SJohn Baldwin * locking. 500384fff8SJason Evans */ 510384fff8SJason Evans static void 520384fff8SJason Evans idle_setup(void *dummy) 530384fff8SJason Evans { 546caa8a15SJohn Baldwin #ifdef SMP 550bbc8826SJohn Baldwin struct pcpu *pc; 566caa8a15SJohn Baldwin #endif 576caa8a15SJohn Baldwin struct proc *p; 58e602ba25SJulian Elischer struct thread *td; 590384fff8SJason Evans int error; 600384fff8SJason Evans 610384fff8SJason Evans #ifdef SMP 620bbc8826SJohn Baldwin SLIST_FOREACH(pc, &cpuhead, pc_allcpu) { 630384fff8SJason Evans #endif 645f66cfcaSJulian Elischer #ifdef SMP 657ab24ea3SJulian Elischer error = kproc_kthread_add(sched_idletd, NULL, &p, &td, 667ab24ea3SJulian Elischer RFSTOPPED | RFHIGHPID, 0, "idled", "idle: cpu%d", pc->pc_cpuid); 677ab24ea3SJulian Elischer pc->pc_idlethread = td; 687ab24ea3SJulian Elischer #else 695f66cfcaSJulian Elischer error = kproc_kthread_add(sched_idletd, NULL, &p, &td, 705f66cfcaSJulian Elischer RFSTOPPED | RFHIGHPID, 0, "idled", "idle"); 717ab24ea3SJulian Elischer PCPU_SET(idlethread, td); 727ab24ea3SJulian Elischer #endif 737ab24ea3SJulian Elischer p = td->td_proc; 740384fff8SJason Evans if (error) 753745c395SJulian Elischer panic("idle_setup: kproc_create error %d\n", error); 760384fff8SJason Evans 776caa8a15SJohn Baldwin p->p_flag |= P_NOLOAD; 78982d11f8SJeff Roberson thread_lock(td); 79bf0acc27SJohn Baldwin TD_SET_CAN_RUN(td); 80b1ac98d8SJulian Elischer td->td_flags |= TDF_IDLETD; 818460a577SJohn Birrell sched_class(td, PRI_IDLE); 82339a7e7fSSuleiman Souhlal sched_prio(td, PRI_MAX_IDLE); 83982d11f8SJeff Roberson thread_unlock(td); 846caa8a15SJohn Baldwin #ifdef SMP 850384fff8SJason Evans } 866caa8a15SJohn Baldwin #endif 870384fff8SJason Evans } 88