1/* $NetBSD: percpu.h,v 1.3 2008/04/09 05:11:20 thorpej Exp $ */
2
3/*-
4 * Copyright (c)2007,2008 YAMAMOTO Takashi,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _SYS_PERCPU_H_
30#define _SYS_PERCPU_H_
31
32#include <sys/percpu_types.h>
33
34void percpu_init(void);
35void percpu_init_cpu(struct cpu_info *);
36percpu_t *percpu_alloc(size_t);
37void percpu_free(percpu_t *, size_t);
38void *percpu_getref(percpu_t *);
39void percpu_putref(percpu_t *);
40
41typedef void (*percpu_callback_t)(void *, void *, struct cpu_info *);
42void percpu_foreach(percpu_t *, percpu_callback_t, void *);
43
44/* low-level api; don't use unless necessary */
45void percpu_traverse_enter(void);
46void percpu_traverse_exit(void);
47void *percpu_getptr_remote(percpu_t *, struct cpu_info *);
48
49#endif /* _SYS_PERCPU_H_ */
50