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kern_cpu.c revision 1.2 
      1  1.2  yamt /*	$NetBSD: kern_cpu.c,v 1.2 2007/05/17 14:51:38 yamt Exp $	*/
      2  1.2  yamt 
      3  1.2  yamt /*-
      4  1.2  yamt  * Copyright (c)2007 YAMAMOTO Takashi,
      5  1.2  yamt  * All rights reserved.
      6  1.2  yamt  *
      7  1.2  yamt  * Redistribution and use in source and binary forms, with or without
      8  1.2  yamt  * modification, are permitted provided that the following conditions
      9  1.2  yamt  * are met:
     10  1.2  yamt  * 1. Redistributions of source code must retain the above copyright
     11  1.2  yamt  *    notice, this list of conditions and the following disclaimer.
     12  1.2  yamt  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.2  yamt  *    notice, this list of conditions and the following disclaimer in the
     14  1.2  yamt  *    documentation and/or other materials provided with the distribution.
     15  1.2  yamt  *
     16  1.2  yamt  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  1.2  yamt  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  1.2  yamt  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  1.2  yamt  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  1.2  yamt  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  1.2  yamt  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  1.2  yamt  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  1.2  yamt  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  1.2  yamt  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.2  yamt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.2  yamt  * SUCH DAMAGE.
     27  1.2  yamt  */
     28  1.2  yamt 
     29  1.2  yamt #include <sys/cdefs.h>
     30  1.2  yamt 
     31  1.2  yamt __KERNEL_RCSID(0, "$NetBSD: kern_cpu.c,v 1.2 2007/05/17 14:51:38 yamt Exp $");
     32  1.2  yamt 
     33  1.2  yamt #include <sys/param.h>
     34  1.2  yamt #include <sys/systm.h>
     35  1.2  yamt #include <sys/idle.h>
     36  1.2  yamt #include <sys/sched.h>
     37  1.2  yamt 
     38  1.2  yamt #include <machine/cpu.h>
     39  1.2  yamt 
     40  1.2  yamt int
     41  1.2  yamt mi_cpu_attach(struct cpu_info *ci)
     42  1.2  yamt {
     43  1.2  yamt 	struct schedstate_percpu *spc = &ci->ci_schedstate;
     44  1.2  yamt 	int error;
     45  1.2  yamt 
     46  1.2  yamt 	mutex_init(&spc->spc_lwplock, MUTEX_SPIN, IPL_SCHED);
     47  1.2  yamt 	sched_cpuattach(ci);
     48  1.2  yamt 
     49  1.2  yamt 	error = create_idle_lwp(ci);
     50  1.2  yamt 	if (error != 0) {
     51  1.2  yamt 		/* XXX revert sched_cpuattach */
     52  1.2  yamt 		return error;
     53  1.2  yamt 	}
     54  1.2  yamt 
     55  1.2  yamt 	ncpu++;
     56  1.2  yamt 
     57  1.2  yamt 	return 0;
     58  1.2  yamt }
     59