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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. | |
beb39c21 MJ |
42 | * |
43 | * Cast the result to uint64_t to prevent overflowing when we append distro | |
44 | * specific version information. | |
2a51de8b MJ |
45 | */ |
46 | #if (LTTNG_LINUX_PATCH >= 256) | |
47 | ||
48 | #define LTTNG_KERNEL_VERSION(a, b, c) \ | |
beb39c21 | 49 | ((((a) << 24) + ((b) << 16) + (c)) * 1ULL) |
2a51de8b MJ |
50 | |
51 | #define LTTNG_LINUX_VERSION_CODE \ | |
52 | LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH) | |
53 | ||
54 | #else | |
55 | ||
beb39c21 MJ |
56 | #define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL) |
57 | #define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL) | |
b78104db | 58 | |
2a51de8b MJ |
59 | #endif |
60 | ||
b78104db | 61 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) |
9f61c55f | 62 | #include <generated/utsrelease.h> |
b78104db | 63 | #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
7b10d281 | 64 | #include <linux/utsrelease.h> |
b78104db | 65 | #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */ |
5fa38800 MD |
66 | |
67 | /* | |
68 | * This macro checks if the kernel version is between the two specified | |
144bbfd5 | 69 | * versions (lower limit inclusive, upper limit exclusive). |
5fa38800 MD |
70 | */ |
71 | #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \ | |
b78104db MJ |
72 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \ |
73 | LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high)) | |
5fa38800 | 74 | |
c94ac1ac MJ |
75 | /* Ubuntu */ |
76 | ||
3e5941df | 77 | #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \ |
66106375 | 78 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
3e5941df | 79 | |
05732a66 | 80 | #ifdef UTS_UBUNTU_RELEASE_ABI |
3e5941df | 81 | #define LTTNG_UBUNTU_VERSION_CODE \ |
66106375 | 82 | ((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI) |
05732a66 MD |
83 | #else |
84 | #define LTTNG_UBUNTU_VERSION_CODE 0 | |
85 | #endif | |
3e5941df JD |
86 | |
87 | #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
88 | a_high, b_high, c_high, d_high) \ | |
05732a66 | 89 | (LTTNG_UBUNTU_VERSION_CODE >= \ |
3e5941df JD |
90 | LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ |
91 | LTTNG_UBUNTU_VERSION_CODE < \ | |
92 | LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
93 | ||
c94ac1ac MJ |
94 | /* Debian */ |
95 | ||
72e6c528 | 96 | #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \ |
b78104db | 97 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
72e6c528 | 98 | |
05732a66 | 99 | #ifdef DEBIAN_API_VERSION |
72e6c528 | 100 | #define LTTNG_DEBIAN_VERSION_CODE \ |
b78104db | 101 | ((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION) |
05732a66 MD |
102 | #else |
103 | #define LTTNG_DEBIAN_VERSION_CODE 0 | |
104 | #endif | |
72e6c528 MD |
105 | |
106 | #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
107 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
05732a66 | 108 | (LTTNG_DEBIAN_VERSION_CODE >= \ |
72e6c528 MD |
109 | LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
110 | LTTNG_DEBIAN_VERSION_CODE < \ | |
111 | LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
112 | ||
c94ac1ac | 113 | #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \ |
9ecc902d | 114 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 10000) + ((e) * 100) + (f)) |
c94ac1ac MJ |
115 | |
116 | /* RHEL */ | |
f30ae671 | 117 | |
c94ac1ac | 118 | #ifdef RHEL_API_VERSION |
f30ae671 | 119 | #define LTTNG_RHEL_VERSION_CODE \ |
9ecc902d | 120 | ((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + RHEL_API_VERSION) |
f30ae671 MD |
121 | #else |
122 | #define LTTNG_RHEL_VERSION_CODE 0 | |
123 | #endif | |
124 | ||
c94ac1ac MJ |
125 | #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ |
126 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
f30ae671 | 127 | (LTTNG_RHEL_VERSION_CODE >= \ |
c94ac1ac | 128 | LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ |
f30ae671 | 129 | LTTNG_RHEL_VERSION_CODE < \ |
c94ac1ac MJ |
130 | LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) |
131 | ||
ce66b486 MJ |
132 | /* SUSE Linux enterprise */ |
133 | ||
134 | #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \ | |
cdf4b41c | 135 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 100000) + ((e) * 100) + (f)) |
ce66b486 MJ |
136 | |
137 | #ifdef SLE_API_VERSION | |
138 | #define LTTNG_SLE_VERSION_CODE \ | |
cdf4b41c | 139 | ((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + SLE_API_VERSION) |
ce66b486 MJ |
140 | #else |
141 | #define LTTNG_SLE_VERSION_CODE 0 | |
142 | #endif | |
143 | ||
144 | #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \ | |
145 | a_high, b_high, c_high, d_high, e_high, f_high) \ | |
146 | (LTTNG_SLE_VERSION_CODE >= \ | |
147 | LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \ | |
148 | LTTNG_SLE_VERSION_CODE < \ | |
149 | LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high)) | |
150 | ||
e4838da1 LG |
151 | /* Fedora */ |
152 | ||
153 | #define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \ | |
b78104db | 154 | (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d)) |
e4838da1 LG |
155 | |
156 | #ifdef FEDORA_REVISION_VERSION | |
157 | #define LTTNG_FEDORA_VERSION_CODE \ | |
b78104db | 158 | ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION) |
e4838da1 LG |
159 | #else |
160 | #define LTTNG_FEDORA_VERSION_CODE 0 | |
161 | #endif | |
162 | ||
163 | #define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
164 | a_high, b_high, c_high, d_high) \ | |
165 | (LTTNG_FEDORA_VERSION_CODE >= \ | |
166 | LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
167 | LTTNG_FEDORA_VERSION_CODE < \ | |
168 | LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
169 | ||
c94ac1ac | 170 | /* RT patch */ |
f30ae671 | 171 | |
b4c8e4d3 | 172 | #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \ |
d8f24060 | 173 | (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d)) |
b4c8e4d3 MJ |
174 | |
175 | #ifdef RT_PATCH_VERSION | |
176 | #define LTTNG_RT_VERSION_CODE \ | |
d8f24060 | 177 | ((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION) |
b4c8e4d3 MJ |
178 | #else |
179 | #define LTTNG_RT_VERSION_CODE 0 | |
180 | #endif | |
181 | ||
182 | #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \ | |
183 | a_high, b_high, c_high, d_high) \ | |
184 | (LTTNG_RT_VERSION_CODE >= \ | |
185 | LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \ | |
186 | LTTNG_RT_VERSION_CODE < \ | |
187 | LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high)) | |
188 | ||
5fa38800 | 189 | #endif /* _LTTNG_KERNEL_VERSION_H */ |