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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 | * | |
919f2868 | 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 | #include <generated/utsrelease.h> |
5fa38800 | 15 | |
919f2868 MJ |
16 | /* |
17 | * The following defines are extracted from the toplevel Linux Makefile and | |
18 | * passed on the command line -with '-D'. | |
19 | */ | |
20 | ||
21 | #ifndef LTTNG_LINUX_MAJOR | |
22 | #define LTTNG_LINUX_MAJOR 0 | |
23 | #endif | |
24 | ||
25 | #ifndef LTTNG_LINUX_MINOR | |
26 | #define LTTNG_LINUX_MINOR 0 | |
27 | #endif | |
28 | ||
29 | #ifndef LTTNG_LINUX_PATCH | |
30 | #define LTTNG_LINUX_PATCH 0 | |
31 | #endif | |
32 | ||
33 | /* | |
34 | * Some stable releases have overflowed the 8bits allocated to the sublevel in | |
35 | * the version code. To determine if the current kernel is affected, use the | |
36 | * sublevel version from the Makefile. This is currently true for the 4.4.256 | |
37 | * and 4.9.256 stable releases. | |
38 | * | |
39 | * When the sublevel has overflowed, use the values from the Makefile instead | |
40 | * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits. | |
41 | * Otherwise, keep using the version code from the headers to minimise the | |
42 | * behavior change and avoid regressions. | |
43 | */ | |
44 | #if (LTTNG_LINUX_PATCH >= 256) | |
45 | ||
46 | #define LTTNG_KERNEL_VERSION(a, b, c) \ | |
47 | (((a) << 24) + ((b) << 16) + (c)) | |
48 | ||
49 | #define LTTNG_LINUX_VERSION_CODE \ | |
50 | LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH) | |
51 | ||
52 | #else | |
53 | ||
2d042821 MJ |
54 | #define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c) |
55 | #define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE | |
56 | ||
919f2868 MJ |
57 | #endif |
58 | ||
5fa38800 MD |
59 | /* |
60 | * This macro checks if the kernel version is between the two specified | |
144bbfd5 | 61 | * versions (lower limit inclusive, upper limit exclusive). |
5fa38800 MD |
62 | */ |
63 | #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \ | |
2d042821 MJ |
64 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \ |
65 | LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high)) | |
5fa38800 | 66 | |
c94ac1ac MJ |
67 | /* Ubuntu */ |
68 | ||
3e5941df | 69 | #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \ |
140ade75 | 70 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
3e5941df | 71 | |
05732a66 | 72 | #ifdef UTS_UBUNTU_RELEASE_ABI |
3e5941df | 73 | #define LTTNG_UBUNTU_VERSION_CODE \ |
140ade75 | 74 | ((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI) |
05732a66 MD |
75 | #else |
76 | #define LTTNG_UBUNTU_VERSION_CODE 0 | |
77 | #endif | |
3e5941df JD |
78 | |
79 | #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
80 | a_high, b_high, c_high, d_high) \ | |
05732a66 | 81 | (LTTNG_UBUNTU_VERSION_CODE >= \ |
3e5941df JD |
82 | LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
83 | LTTNG_UBUNTU_VERSION_CODE < \ | |
84 | LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
85 | ||
c94ac1ac MJ |
86 | /* Debian */ |
87 | ||
72e6c528 | 88 | #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \ |
2d042821 | 89 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
72e6c528 | 90 | |
05732a66 | 91 | #ifdef DEBIAN_API_VERSION |
72e6c528 | 92 | #define LTTNG_DEBIAN_VERSION_CODE \ |
2d042821 | 93 | ((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION) |
05732a66 MD |
94 | #else |
95 | #define LTTNG_DEBIAN_VERSION_CODE 0 | |
96 | #endif | |
72e6c528 MD |
97 | |
98 | #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
99 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
05732a66 | 100 | (LTTNG_DEBIAN_VERSION_CODE >= \ |
72e6c528 MD |
101 | LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
102 | LTTNG_DEBIAN_VERSION_CODE < \ | |
103 | LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
104 | ||
c94ac1ac | 105 | #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \ |
2d042821 | 106 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
c94ac1ac MJ |
107 | |
108 | /* RHEL */ | |
f30ae671 | 109 | |
c94ac1ac | 110 | #ifdef RHEL_API_VERSION |
f30ae671 | 111 | #define LTTNG_RHEL_VERSION_CODE \ |
2d042821 | 112 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION) |
f30ae671 MD |
113 | #else |
114 | #define LTTNG_RHEL_VERSION_CODE 0 | |
115 | #endif | |
116 | ||
c94ac1ac MJ |
117 | #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
118 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
f30ae671 | 119 | (LTTNG_RHEL_VERSION_CODE >= \ |
c94ac1ac | 120 | LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
f30ae671 | 121 | LTTNG_RHEL_VERSION_CODE < \ |
c94ac1ac MJ |
122 | LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
123 | ||
ce66b486 MJ |
124 | /* SUSE Linux enterprise */ |
125 | ||
126 | #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \ | |
2d042821 | 127 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
ce66b486 MJ |
128 | |
129 | #ifdef SLE_API_VERSION | |
130 | #define LTTNG_SLE_VERSION_CODE \ | |
2d042821 | 131 | ((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION) |
ce66b486 MJ |
132 | #else |
133 | #define LTTNG_SLE_VERSION_CODE 0 | |
134 | #endif | |
135 | ||
136 | #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
137 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
138 | (LTTNG_SLE_VERSION_CODE >= \ | |
139 | LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ | |
140 | LTTNG_SLE_VERSION_CODE < \ | |
141 | LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
142 | ||
e4838da1 LG |
143 | /* Fedora */ |
144 | ||
145 | #define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \ | |
2d042821 | 146 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d)) |
e4838da1 LG |
147 | |
148 | #ifdef FEDORA_REVISION_VERSION | |
149 | #define LTTNG_FEDORA_VERSION_CODE \ | |
2d042821 | 150 | ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION) |
e4838da1 LG |
151 | #else |
152 | #define LTTNG_FEDORA_VERSION_CODE 0 | |
153 | #endif | |
154 | ||
155 | #define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
156 | a_high, b_high, c_high, d_high) \ | |
157 | (LTTNG_FEDORA_VERSION_CODE >= \ | |
158 | LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
159 | LTTNG_FEDORA_VERSION_CODE < \ | |
160 | LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
161 | ||
c94ac1ac | 162 | /* RT patch */ |
f30ae671 | 163 | |
b4c8e4d3 | 164 | #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \ |
2d042821 | 165 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d)) |
b4c8e4d3 MJ |
166 | |
167 | #ifdef RT_PATCH_VERSION | |
168 | #define LTTNG_RT_VERSION_CODE \ | |
2d042821 | 169 | ((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION) |
b4c8e4d3 MJ |
170 | #else |
171 | #define LTTNG_RT_VERSION_CODE 0 | |
172 | #endif | |
173 | ||
174 | #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
175 | a_high, b_high, c_high, d_high) \ | |
176 | (LTTNG_RT_VERSION_CODE >= \ | |
177 | LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
178 | LTTNG_RT_VERSION_CODE < \ | |
179 | LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
180 | ||
5fa38800 | 181 | #endif /* _LTTNG_KERNEL_VERSION_H */ |