source: mainline/kernel/generic/include/smp/smp.h

Last change on this file was 7c5320c, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 2 years ago

Use the semaphore interface instead of waitq in some places

Since we already have an underused semaphore API in the kernel,
it would be worthwhile to use it in places where the baseline
semaphore semantics are needed. It makes the function of the
calls obvious even to people unfamiliar with the details of
waitq API.

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup kernel_generic
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_SMP_H_
36#define KERN_SMP_H_
37
38#include <synch/semaphore.h>
39
40extern semaphore_t ap_completion_semaphore;
41
42#ifdef CONFIG_SMP
43
44extern void smp_init(void);
45extern void kmp(void *arg);
46
47#else /* CONFIG_SMP */
48
49#define smp_init()
50
51#endif /* CONFIG_SMP */
52
53#endif /* __SMP_H__ */
54
55/** @}
56 */
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