2000-09-07 01:33:02 +00:00
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/*-
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2004-07-25 19:49:01 +00:00
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* Copyright (C) 2000-2004 The FreeBSD Project. All rights reserved.
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2000-09-07 01:33:02 +00:00
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*
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2004-07-25 19:49:01 +00:00
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2000-09-07 01:33:02 +00:00
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*/
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2003-06-11 00:56:59 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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2000-09-07 01:33:02 +00:00
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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2001-05-10 17:45:49 +00:00
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#include <sys/kthread.h>
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2001-05-01 08:13:21 +00:00
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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2000-09-07 01:33:02 +00:00
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#include <sys/resourcevar.h>
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2002-10-12 05:32:24 +00:00
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#include <sys/sched.h>
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2000-09-07 01:33:02 +00:00
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#include <sys/unistd.h>
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2004-09-01 06:42:02 +00:00
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#ifdef SMP
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#include <sys/smp.h>
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#endif
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2000-09-07 01:33:02 +00:00
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static void idle_setup(void *dummy);
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SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL)
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/*
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2003-10-19 02:43:57 +00:00
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* Set up per-cpu idle process contexts. The AP's shouldn't be running or
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2001-02-09 14:59:43 +00:00
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* accessing their idle processes at this point, so don't bother with
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* locking.
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2000-09-07 01:33:02 +00:00
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*/
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static void
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idle_setup(void *dummy)
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{
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2001-04-27 19:28:25 +00:00
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#ifdef SMP
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2001-12-11 23:33:44 +00:00
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struct pcpu *pc;
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2001-04-27 19:28:25 +00:00
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#endif
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struct proc *p;
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Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)
Reviewed by: Almost everyone who counts
(at various times, peter, jhb, matt, alfred, mini, bernd,
and a cast of thousands)
NOTE: this is still Beta code, and contains lots of debugging stuff.
expect slight instability in signals..
2002-06-29 17:26:22 +00:00
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struct thread *td;
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2000-09-07 01:33:02 +00:00
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int error;
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#ifdef SMP
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2001-12-11 23:33:44 +00:00
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SLIST_FOREACH(pc, &cpuhead, pc_allcpu) {
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2007-01-23 08:46:51 +00:00
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error = kthread_create(sched_idletd, NULL, &p,
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2002-10-02 07:44:29 +00:00
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RFSTOPPED | RFHIGHPID, 0, "idle: cpu%d", pc->pc_cpuid);
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2002-02-07 20:58:47 +00:00
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pc->pc_idlethread = FIRST_THREAD_IN_PROC(p);
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2000-09-07 01:33:02 +00:00
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#else
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2007-01-23 08:46:51 +00:00
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error = kthread_create(sched_idletd, NULL, &p,
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2002-10-02 07:44:29 +00:00
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RFSTOPPED | RFHIGHPID, 0, "idle");
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2002-02-07 20:58:47 +00:00
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PCPU_SET(idlethread, FIRST_THREAD_IN_PROC(p));
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2000-09-07 01:33:02 +00:00
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#endif
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if (error)
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panic("idle_setup: kthread_create error %d\n", error);
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2003-04-17 22:25:35 +00:00
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PROC_LOCK(p);
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2001-04-27 19:28:25 +00:00
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p->p_flag |= P_NOLOAD;
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Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)
Reviewed by: Almost everyone who counts
(at various times, peter, jhb, matt, alfred, mini, bernd,
and a cast of thousands)
NOTE: this is still Beta code, and contains lots of debugging stuff.
expect slight instability in signals..
2002-06-29 17:26:22 +00:00
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td = FIRST_THREAD_IN_PROC(p);
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Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
sychronization.
- Use the per-process spinlock rather than the sched_lock for per-process
scheduling synchronization.
Tested by: kris, current@
Tested on: i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-05 00:00:57 +00:00
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thread_lock(td);
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2004-07-02 19:09:50 +00:00
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TD_SET_CAN_RUN(td);
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2003-05-02 00:33:12 +00:00
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td->td_flags |= TDF_IDLETD;
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2006-10-26 21:42:22 +00:00
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sched_class(td, PRI_IDLE);
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2005-02-04 06:16:05 +00:00
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sched_prio(td, PRI_MAX_IDLE);
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Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
sychronization.
- Use the per-process spinlock rather than the sched_lock for per-process
scheduling synchronization.
Tested by: kris, current@
Tested on: i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-05 00:00:57 +00:00
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thread_unlock(td);
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2003-04-17 22:25:35 +00:00
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PROC_UNLOCK(p);
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2001-04-27 19:28:25 +00:00
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#ifdef SMP
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2000-09-07 01:33:02 +00:00
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}
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2001-04-27 19:28:25 +00:00
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#endif
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2000-09-07 01:33:02 +00:00
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}
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