smp.h revision 1.3 1 1.3 riastrad /* $NetBSD: smp.h,v 1.3 2021/12/19 11:38:04 riastradh Exp $ */
2 1.1 riastrad
3 1.1 riastrad /*-
4 1.1 riastrad * Copyright (c) 2018 The NetBSD Foundation, Inc.
5 1.1 riastrad * All rights reserved.
6 1.1 riastrad *
7 1.1 riastrad * This code is derived from software contributed to The NetBSD Foundation
8 1.1 riastrad * by Taylor R. Campbell.
9 1.1 riastrad *
10 1.1 riastrad * Redistribution and use in source and binary forms, with or without
11 1.1 riastrad * modification, are permitted provided that the following conditions
12 1.1 riastrad * are met:
13 1.1 riastrad * 1. Redistributions of source code must retain the above copyright
14 1.1 riastrad * notice, this list of conditions and the following disclaimer.
15 1.1 riastrad * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 riastrad * notice, this list of conditions and the following disclaimer in the
17 1.1 riastrad * documentation and/or other materials provided with the distribution.
18 1.1 riastrad *
19 1.1 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.1 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.1 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.1 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.1 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.1 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.1 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.1 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.1 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.1 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.1 riastrad * POSSIBILITY OF SUCH DAMAGE.
30 1.1 riastrad */
31 1.1 riastrad
32 1.1 riastrad #ifndef _LINUX_SMP_H_
33 1.1 riastrad #define _LINUX_SMP_H_
34 1.1 riastrad
35 1.1 riastrad #include <sys/systm.h>
36 1.2 riastrad #include <sys/cpu.h>
37 1.1 riastrad
38 1.3 riastrad #define smp_processor_id() cpu_number()
39 1.3 riastrad
40 1.1 riastrad static inline int
41 1.1 riastrad get_cpu(void)
42 1.1 riastrad {
43 1.1 riastrad
44 1.1 riastrad kpreempt_disable();
45 1.1 riastrad return cpu_index(curcpu());
46 1.1 riastrad }
47 1.1 riastrad
48 1.1 riastrad static inline void
49 1.1 riastrad put_cpu(void)
50 1.1 riastrad {
51 1.1 riastrad
52 1.1 riastrad kpreempt_disable();
53 1.1 riastrad }
54 1.1 riastrad
55 1.1 riastrad #endif /* _LINUX_SMP_H_ */
56