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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
2df37e95 | 3 | * lttng/kernel-version.h |
5fa38800 | 4 | * |
7b25fa17 | 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> |
db34449e | 14 | #include <linux/types.h> |
9f61c55f | 15 | #include <generated/utsrelease.h> |
5fa38800 | 16 | |
7b25fa17 MJ |
17 | /* |
18 | * The following defines are extracted from the toplevel Linux Makefile and | |
19 | * passed on the command line -with '-D'. | |
20 | */ | |
21 | ||
22 | #ifndef LTTNG_LINUX_MAJOR | |
23 | #define LTTNG_LINUX_MAJOR 0 | |
24 | #endif | |
25 | ||
26 | #ifndef LTTNG_LINUX_MINOR | |
27 | #define LTTNG_LINUX_MINOR 0 | |
28 | #endif | |
29 | ||
30 | #ifndef LTTNG_LINUX_PATCH | |
31 | #define LTTNG_LINUX_PATCH 0 | |
32 | #endif | |
33 | ||
34 | /* | |
35 | * Some stable releases have overflowed the 8bits allocated to the sublevel in | |
36 | * the version code. To determine if the current kernel is affected, use the | |
37 | * sublevel version from the Makefile. This is currently true for the 4.4.256 | |
38 | * and 4.9.256 stable releases. | |
39 | * | |
40 | * When the sublevel has overflowed, use the values from the Makefile instead | |
41 | * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits. | |
42 | * Otherwise, keep using the version code from the headers to minimise the | |
43 | * behavior change and avoid regressions. | |
db34449e MJ |
44 | * |
45 | * Cast the result to uint64_t to prevent overflowing when we append distro | |
46 | * specific version information. | |
7b25fa17 MJ |
47 | */ |
48 | #if (LTTNG_LINUX_PATCH >= 256) | |
49 | ||
50 | #define LTTNG_KERNEL_VERSION(a, b, c) \ | |
db34449e | 51 | ((((a) << 24) + ((b) << 16) + (c)) * 1ULL) |
7b25fa17 MJ |
52 | |
53 | #define LTTNG_LINUX_VERSION_CODE \ | |
54 | LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH) | |
55 | ||
56 | #else | |
57 | ||
db34449e MJ |
58 | #define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL) |
59 | #define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL) | |
7b25fa17 MJ |
60 | |
61 | #endif | |
62 | ||
5fa38800 MD |
63 | /* |
64 | * This macro checks if the kernel version is between the two specified | |
144bbfd5 | 65 | * versions (lower limit inclusive, upper limit exclusive). |
5fa38800 MD |
66 | */ |
67 | #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \ | |
5f4c791e MJ |
68 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \ |
69 | LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high)) | |
5fa38800 | 70 | |
c94ac1ac MJ |
71 | /* Ubuntu */ |
72 | ||
3e5941df | 73 | #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \ |
af590311 | 74 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
3e5941df | 75 | |
05732a66 | 76 | #ifdef UTS_UBUNTU_RELEASE_ABI |
3e5941df | 77 | #define LTTNG_UBUNTU_VERSION_CODE \ |
af590311 | 78 | ((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI) |
05732a66 MD |
79 | #else |
80 | #define LTTNG_UBUNTU_VERSION_CODE 0 | |
81 | #endif | |
3e5941df JD |
82 | |
83 | #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
84 | a_high, b_high, c_high, d_high) \ | |
05732a66 | 85 | (LTTNG_UBUNTU_VERSION_CODE >= \ |
3e5941df JD |
86 | LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
87 | LTTNG_UBUNTU_VERSION_CODE < \ | |
88 | LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
89 | ||
c94ac1ac MJ |
90 | /* Debian */ |
91 | ||
72e6c528 | 92 | #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \ |
5f4c791e | 93 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
72e6c528 | 94 | |
05732a66 | 95 | #ifdef DEBIAN_API_VERSION |
72e6c528 | 96 | #define LTTNG_DEBIAN_VERSION_CODE \ |
5f4c791e | 97 | ((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION) |
05732a66 MD |
98 | #else |
99 | #define LTTNG_DEBIAN_VERSION_CODE 0 | |
100 | #endif | |
72e6c528 MD |
101 | |
102 | #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
103 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
05732a66 | 104 | (LTTNG_DEBIAN_VERSION_CODE >= \ |
72e6c528 MD |
105 | LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
106 | LTTNG_DEBIAN_VERSION_CODE < \ | |
107 | LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
108 | ||
c94ac1ac | 109 | /* RHEL */ |
f30ae671 | 110 | |
5f4c791e | 111 | #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \ |
aec7897f | 112 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
5f4c791e | 113 | |
c94ac1ac | 114 | #ifdef RHEL_API_VERSION |
f30ae671 | 115 | #define LTTNG_RHEL_VERSION_CODE \ |
aec7897f | 116 | ((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + RHEL_API_VERSION) |
f30ae671 MD |
117 | #else |
118 | #define LTTNG_RHEL_VERSION_CODE 0 | |
119 | #endif | |
120 | ||
c94ac1ac MJ |
121 | #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
122 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
f30ae671 | 123 | (LTTNG_RHEL_VERSION_CODE >= \ |
c94ac1ac | 124 | LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
f30ae671 | 125 | LTTNG_RHEL_VERSION_CODE < \ |
c94ac1ac MJ |
126 | LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
127 | ||
ce66b486 MJ |
128 | /* SUSE Linux enterprise */ |
129 | ||
130 | #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \ | |
297b2e1f | 131 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 100000) + ((e) * 100) + (f)) |
ce66b486 MJ |
132 | |
133 | #ifdef SLE_API_VERSION | |
134 | #define LTTNG_SLE_VERSION_CODE \ | |
297b2e1f | 135 | ((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + SLE_API_VERSION) |
ce66b486 MJ |
136 | #else |
137 | #define LTTNG_SLE_VERSION_CODE 0 | |
138 | #endif | |
139 | ||
140 | #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
141 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
142 | (LTTNG_SLE_VERSION_CODE >= \ | |
143 | LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ | |
144 | LTTNG_SLE_VERSION_CODE < \ | |
145 | LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
146 | ||
e4838da1 LG |
147 | /* Fedora */ |
148 | ||
149 | #define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \ | |
5f4c791e | 150 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d)) |
e4838da1 LG |
151 | |
152 | #ifdef FEDORA_REVISION_VERSION | |
153 | #define LTTNG_FEDORA_VERSION_CODE \ | |
5f4c791e | 154 | ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION) |
e4838da1 LG |
155 | #else |
156 | #define LTTNG_FEDORA_VERSION_CODE 0 | |
157 | #endif | |
158 | ||
159 | #define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
160 | a_high, b_high, c_high, d_high) \ | |
161 | (LTTNG_FEDORA_VERSION_CODE >= \ | |
162 | LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
163 | LTTNG_FEDORA_VERSION_CODE < \ | |
164 | LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
165 | ||
c94ac1ac | 166 | /* RT patch */ |
f30ae671 | 167 | |
b4c8e4d3 | 168 | #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \ |
b737968d | 169 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
b4c8e4d3 MJ |
170 | |
171 | #ifdef RT_PATCH_VERSION | |
172 | #define LTTNG_RT_VERSION_CODE \ | |
b737968d | 173 | ((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION) |
b4c8e4d3 MJ |
174 | #else |
175 | #define LTTNG_RT_VERSION_CODE 0 | |
176 | #endif | |
177 | ||
178 | #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
179 | a_high, b_high, c_high, d_high) \ | |
180 | (LTTNG_RT_VERSION_CODE >= \ | |
181 | LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
182 | LTTNG_RT_VERSION_CODE < \ | |
183 | LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
184 | ||
5fa38800 | 185 | #endif /* _LTTNG_KERNEL_VERSION_H */ |