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9f36eaed MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
2 | * | |
5fa38800 MD |
3 | * lttng-kernel-version.h |
4 | * | |
b78104db | 5 | * Contains helpers to check kernel version conditions. |
5fa38800 MD |
6 | * |
7 | * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5fa38800 MD |
8 | */ |
9 | ||
9f36eaed MJ |
10 | #ifndef _LTTNG_KERNEL_VERSION_H |
11 | #define _LTTNG_KERNEL_VERSION_H | |
12 | ||
5fa38800 | 13 | #include <linux/version.h> |
9f61c55f | 14 | |
2a51de8b MJ |
15 | /* |
16 | * The following defines are extracted from the toplevel Linux Makefile and | |
17 | * passed on the command line -with '-D'. | |
18 | */ | |
19 | ||
20 | #ifndef LTTNG_LINUX_MAJOR | |
21 | #define LTTNG_LINUX_MAJOR 0 | |
22 | #endif | |
23 | ||
24 | #ifndef LTTNG_LINUX_MINOR | |
25 | #define LTTNG_LINUX_MINOR 0 | |
26 | #endif | |
27 | ||
28 | #ifndef LTTNG_LINUX_PATCH | |
29 | #define LTTNG_LINUX_PATCH 0 | |
30 | #endif | |
31 | ||
32 | /* | |
33 | * Some stable releases have overflowed the 8bits allocated to the sublevel in | |
34 | * the version code. To determine if the current kernel is affected, use the | |
35 | * sublevel version from the Makefile. This is currently true for the 4.4.256 | |
36 | * and 4.9.256 stable releases. | |
37 | * | |
38 | * When the sublevel has overflowed, use the values from the Makefile instead | |
39 | * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits. | |
40 | * Otherwise, keep using the version code from the headers to minimise the | |
41 | * behavior change and avoid regressions. | |
42 | */ | |
43 | #if (LTTNG_LINUX_PATCH >= 256) | |
44 | ||
45 | #define LTTNG_KERNEL_VERSION(a, b, c) \ | |
46 | (((a) << 24) + ((b) << 16) + (c)) | |
47 | ||
48 | #define LTTNG_LINUX_VERSION_CODE \ | |
49 | LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH) | |
50 | ||
51 | #else | |
52 | ||
b78104db MJ |
53 | #define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c) |
54 | #define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE | |
55 | ||
2a51de8b MJ |
56 | #endif |
57 | ||
b78104db | 58 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) |
9f61c55f | 59 | #include <generated/utsrelease.h> |
b78104db | 60 | #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
7b10d281 | 61 | #include <linux/utsrelease.h> |
b78104db | 62 | #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
5fa38800 MD |
63 | |
64 | /* | |
65 | * This macro checks if the kernel version is between the two specified | |
144bbfd5 | 66 | * versions (lower limit inclusive, upper limit exclusive). |
5fa38800 MD |
67 | */ |
68 | #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \ | |
b78104db MJ |
69 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \ |
70 | LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high)) | |
5fa38800 | 71 | |
c94ac1ac MJ |
72 | /* Ubuntu */ |
73 | ||
3e5941df | 74 | #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \ |
66106375 | 75 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
3e5941df | 76 | |
05732a66 | 77 | #ifdef UTS_UBUNTU_RELEASE_ABI |
3e5941df | 78 | #define LTTNG_UBUNTU_VERSION_CODE \ |
66106375 | 79 | ((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI) |
05732a66 MD |
80 | #else |
81 | #define LTTNG_UBUNTU_VERSION_CODE 0 | |
82 | #endif | |
3e5941df JD |
83 | |
84 | #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
85 | a_high, b_high, c_high, d_high) \ | |
05732a66 | 86 | (LTTNG_UBUNTU_VERSION_CODE >= \ |
3e5941df JD |
87 | LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
88 | LTTNG_UBUNTU_VERSION_CODE < \ | |
89 | LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
90 | ||
c94ac1ac MJ |
91 | /* Debian */ |
92 | ||
72e6c528 | 93 | #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \ |
b78104db | 94 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
72e6c528 | 95 | |
05732a66 | 96 | #ifdef DEBIAN_API_VERSION |
72e6c528 | 97 | #define LTTNG_DEBIAN_VERSION_CODE \ |
b78104db | 98 | ((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION) |
05732a66 MD |
99 | #else |
100 | #define LTTNG_DEBIAN_VERSION_CODE 0 | |
101 | #endif | |
72e6c528 MD |
102 | |
103 | #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
104 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
05732a66 | 105 | (LTTNG_DEBIAN_VERSION_CODE >= \ |
72e6c528 MD |
106 | LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
107 | LTTNG_DEBIAN_VERSION_CODE < \ | |
108 | LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
109 | ||
c94ac1ac | 110 | #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \ |
b78104db | 111 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
c94ac1ac MJ |
112 | |
113 | /* RHEL */ | |
f30ae671 | 114 | |
c94ac1ac | 115 | #ifdef RHEL_API_VERSION |
f30ae671 | 116 | #define LTTNG_RHEL_VERSION_CODE \ |
b78104db | 117 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION) |
f30ae671 MD |
118 | #else |
119 | #define LTTNG_RHEL_VERSION_CODE 0 | |
120 | #endif | |
121 | ||
c94ac1ac MJ |
122 | #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
123 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
f30ae671 | 124 | (LTTNG_RHEL_VERSION_CODE >= \ |
c94ac1ac | 125 | LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
f30ae671 | 126 | LTTNG_RHEL_VERSION_CODE < \ |
c94ac1ac MJ |
127 | LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
128 | ||
ce66b486 MJ |
129 | /* SUSE Linux enterprise */ |
130 | ||
131 | #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \ | |
b78104db | 132 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
ce66b486 MJ |
133 | |
134 | #ifdef SLE_API_VERSION | |
135 | #define LTTNG_SLE_VERSION_CODE \ | |
b78104db | 136 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION) |
ce66b486 MJ |
137 | #else |
138 | #define LTTNG_SLE_VERSION_CODE 0 | |
139 | #endif | |
140 | ||
141 | #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
142 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
143 | (LTTNG_SLE_VERSION_CODE >= \ | |
144 | LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ | |
145 | LTTNG_SLE_VERSION_CODE < \ | |
146 | LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
147 | ||
e4838da1 LG |
148 | /* Fedora */ |
149 | ||
150 | #define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \ | |
b78104db | 151 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d)) |
e4838da1 LG |
152 | |
153 | #ifdef FEDORA_REVISION_VERSION | |
154 | #define LTTNG_FEDORA_VERSION_CODE \ | |
b78104db | 155 | ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION) |
e4838da1 LG |
156 | #else |
157 | #define LTTNG_FEDORA_VERSION_CODE 0 | |
158 | #endif | |
159 | ||
160 | #define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
161 | a_high, b_high, c_high, d_high) \ | |
162 | (LTTNG_FEDORA_VERSION_CODE >= \ | |
163 | LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
164 | LTTNG_FEDORA_VERSION_CODE < \ | |
165 | LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
166 | ||
c94ac1ac | 167 | /* RT patch */ |
f30ae671 | 168 | |
b4c8e4d3 | 169 | #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \ |
b78104db | 170 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d)) |
b4c8e4d3 MJ |
171 | |
172 | #ifdef RT_PATCH_VERSION | |
173 | #define LTTNG_RT_VERSION_CODE \ | |
b78104db | 174 | ((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION) |
b4c8e4d3 MJ |
175 | #else |
176 | #define LTTNG_RT_VERSION_CODE 0 | |
177 | #endif | |
178 | ||
179 | #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
180 | a_high, b_high, c_high, d_high) \ | |
181 | (LTTNG_RT_VERSION_CODE >= \ | |
182 | LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
183 | LTTNG_RT_VERSION_CODE < \ | |
184 | LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
185 | ||
5fa38800 | 186 | #endif /* _LTTNG_KERNEL_VERSION_H */ |