lttng-kernel-version.h

   1 #ifndef _LTTNG_KERNEL_VERSION_H
   2 #define _LTTNG_KERNEL_VERSION_H
   3
   4 /*
   5  * lttng-kernel-version.h
   6  *
   7  * Contains helpers to check more complex kernel version conditions.
   8  *
   9  * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; only
  14  * version 2.1 of the License.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25
  26 #include <linux/version.h>
  27
  28 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
  29 #include <generated/utsrelease.h>
  30 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) */
  31 #include <linux/utsrelease.h>
  32 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) */
  33
  34 /*
  35  * This macro checks if the kernel version is between the two specified
  36  * versions (lower limit inclusive, upper limit exclusive).
  37  */
  38 #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
  39         (LINUX_VERSION_CODE >= KERNEL_VERSION(a_low, b_low, c_low) && \
  40          LINUX_VERSION_CODE < KERNEL_VERSION(a_high, b_high, c_high))
  41
  42 /* Ubuntu */
  43
  44 #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
  45         (((a) << 24) + ((b) << 16) + ((c) << 8) + (d))
  46
  47 #ifdef UTS_UBUNTU_RELEASE_ABI
  48 #define LTTNG_UBUNTU_VERSION_CODE \
  49         ((LINUX_VERSION_CODE << 8) + UTS_UBUNTU_RELEASE_ABI)
  50 #else
  51 #define LTTNG_UBUNTU_VERSION_CODE       0
  52 #endif
  53
  54 #define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
  55                 a_high, b_high, c_high, d_high) \
  56         (LTTNG_UBUNTU_VERSION_CODE >= \
  57                 LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
  58                 LTTNG_UBUNTU_VERSION_CODE < \
  59                 LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))
  60
  61 /* Debian */
  62
  63 #define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
  64         (((((a) << 16) + ((b) << 8) + (c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
  65
  66 #ifdef DEBIAN_API_VERSION
  67 #define LTTNG_DEBIAN_VERSION_CODE \
  68         ((LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
  69 #else
  70 #define LTTNG_DEBIAN_VERSION_CODE       0
  71 #endif
  72
  73 #define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
  74                 a_high, b_high, c_high, d_high, e_high, f_high) \
  75         (LTTNG_DEBIAN_VERSION_CODE >= \
  76                 LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
  77                 LTTNG_DEBIAN_VERSION_CODE < \
  78                 LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
  79
  80 #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
  81         (((((a) << 16) + ((b) << 8) + (c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
  82
  83 /* RHEL */
  84
  85 #ifdef RHEL_API_VERSION
  86 #define LTTNG_RHEL_VERSION_CODE \
  87         ((LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
  88 #else
  89 #define LTTNG_RHEL_VERSION_CODE         0
  90 #endif
  91
  92 #define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
  93                 a_high, b_high, c_high, d_high, e_high, f_high) \
  94         (LTTNG_RHEL_VERSION_CODE >= \
  95                 LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
  96                 LTTNG_RHEL_VERSION_CODE < \
  97                 LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
  98
  99 /* SUSE Linux enterprise */
 100
 101 #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
 102         (((((a) << 16) + ((b) << 8) + (c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
 103
 104 #ifdef SLE_API_VERSION
 105 #define LTTNG_SLE_VERSION_CODE \
 106         ((LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
 107 #else
 108 #define LTTNG_SLE_VERSION_CODE  0
 109 #endif
 110
 111 #define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
 112                 a_high, b_high, c_high, d_high, e_high, f_high) \
 113         (LTTNG_SLE_VERSION_CODE >= \
 114                 LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
 115                 LTTNG_SLE_VERSION_CODE < \
 116                 LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
 117
 118 /* RT patch */
 119
 120 #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
 121         (((a) << 24) + ((b) << 16) + ((c) << 8) + (d))
 122
 123 #ifdef RT_PATCH_VERSION
 124 #define LTTNG_RT_VERSION_CODE \
 125         ((LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
 126 #else
 127 #define LTTNG_RT_VERSION_CODE   0
 128 #endif
 129
 130 #define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
 131                 a_high, b_high, c_high, d_high) \
 132         (LTTNG_RT_VERSION_CODE >= \
 133                 LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
 134                 LTTNG_RT_VERSION_CODE < \
 135                 LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))
 136
 137 #endif /* _LTTNG_KERNEL_VERSION_H */