blob: d9db189e8684bc633557edb609f4534d98633657 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2014-2015, 2018, 2020-2022 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
/*
* Kernel-wide include for common macros and types.
*/
#ifndef _MALISW_H_
#define _MALISW_H_
#include <linux/version.h>
/**
* MIN - Return the lesser of two values.
* @x: value1
* @y: value2
*
* As a macro it may evaluate its arguments more than once.
* Refer to MAX macro for more details
*/
#define MIN(x, y) ((x) < (y) ? (x) : (y))
/**
* MAX - Return the greater of two values.
* @x: value1
* @y: value2
*
* As a macro it may evaluate its arguments more than once.
* If called on the same two arguments as MIN it is guaranteed to return
* the one that MIN didn't return. This is significant for types where not
* all values are comparable e.g. NaNs in floating-point types. But if you want
* to retrieve the min and max of two values, consider using a conditional swap
* instead.
*/
#define MAX(x, y) ((x) < (y) ? (y) : (x))
/**
* CSTD_UNUSED - Function-like macro for suppressing unused variable warnings.
*
* @x: unused variable
*
* Where possible such variables should be removed; this macro is present for
* cases where we much support API backwards compatibility.
*/
#define CSTD_UNUSED(x) ((void)(x))
/**
* CSTD_NOP - Function-like macro for use where "no behavior" is desired.
* @...: no-op
*
* This is useful when compile time macros turn a function-like macro in to a
* no-op, but where having no statement is otherwise invalid.
*/
#define CSTD_NOP(...) ((void)#__VA_ARGS__)
/**
* CSTD_STR1 - Function-like macro for stringizing a single level macro.
* @x: macro's value
*
* @code
* #define MY_MACRO 32
* CSTD_STR1( MY_MACRO )
* > "MY_MACRO"
* @endcode
*/
#define CSTD_STR1(x) #x
/**
* CSTD_STR2 - Function-like macro for stringizing a macro's value.
* @x: macro's value
*
* This should not be used if the macro is defined in a way which may have no
* value; use the alternative @c CSTD_STR2N macro should be used instead.
* @code
* #define MY_MACRO 32
* CSTD_STR2( MY_MACRO )
* > "32"
* @endcode
*/
#define CSTD_STR2(x) CSTD_STR1(x)
#ifndef fallthrough
#define fallthrough __fallthrough
#endif /* fallthrough */
#ifndef __fallthrough
#define __fallthrough __attribute__((fallthrough))
#endif /* __fallthrough */
#endif /* _MALISW_H_ */
|
