[lttng-modules.git] / lttng-kernel-version.h

#ifndef _LTTNG_KERNEL_VERSION_H
#define _LTTNG_KERNEL_VERSION_H

/*
 * lttng-kernel-version.h
 *
 * Contains helpers to check more complex kernel version conditions.
 *
 * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; only
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <linux/version.h>

/*
 * The following defines are extracted from the toplevel Linux Makefile and
 * passed on the command line -with '-D'.
 */

#ifndef LTTNG_LINUX_MAJOR
#define LTTNG_LINUX_MAJOR 0
#endif

#ifndef LTTNG_LINUX_MINOR
#define LTTNG_LINUX_MINOR 0
#endif

#ifndef LTTNG_LINUX_PATCH
#define LTTNG_LINUX_PATCH 0
#endif

/*
 * Some stable releases have overflowed the 8bits allocated to the sublevel in
 * the version code. To determine if the current kernel is affected, use the
 * sublevel version from the Makefile. This is currently true for the 4.4.256
 * and 4.9.256 stable releases.
 *
 * When the sublevel has overflowed, use the values from the Makefile instead
 * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
 * Otherwise, keep using the version code from the headers to minimise the
 * behavior change and avoid regressions.
 */
#if (LTTNG_LINUX_PATCH >= 256)

#define LTTNG_KERNEL_VERSION(a, b, c) \
	(((a) << 24) + ((b) << 16) + (c))

#define LTTNG_LINUX_VERSION_CODE \
	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)

#else

#define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
#define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE

#endif

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
#include <generated/utsrelease.h>
#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
#include <linux/utsrelease.h>
#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */

/*
 * This macro checks if the kernel version is between the two specified
 * versions (lower limit inclusive, upper limit exclusive).
 */
#define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
	(LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \
	 LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high))

/* Ubuntu */

#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))

#ifdef UTS_UBUNTU_RELEASE_ABI
#define LTTNG_UBUNTU_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
#else
#define LTTNG_UBUNTU_VERSION_CODE 	0
#endif

#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
		a_high, b_high, c_high, d_high) \
	(LTTNG_UBUNTU_VERSION_CODE >= \
		LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
		LTTNG_UBUNTU_VERSION_CODE < \
		LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))

/* Debian */

#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))

#ifdef DEBIAN_API_VERSION
#define LTTNG_DEBIAN_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
#else
#define LTTNG_DEBIAN_VERSION_CODE	0
#endif

#define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_DEBIAN_VERSION_CODE >= \
		LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_DEBIAN_VERSION_CODE < \
		LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))

/* RHEL */

#ifdef RHEL_API_VERSION
#define LTTNG_RHEL_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
#else
#define LTTNG_RHEL_VERSION_CODE		0
#endif

#define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_RHEL_VERSION_CODE >= \
		LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_RHEL_VERSION_CODE < \
		LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

/* SUSE Linux enterprise */

#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))

#ifdef SLE_API_VERSION
#define LTTNG_SLE_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
#else
#define LTTNG_SLE_VERSION_CODE 	0
#endif

#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_SLE_VERSION_CODE >= \
		LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_SLE_VERSION_CODE < \
		LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

/* Fedora */

#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
        (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))

#ifdef FEDORA_REVISION_VERSION
#define LTTNG_FEDORA_VERSION_CODE \
        ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
#else
#define LTTNG_FEDORA_VERSION_CODE         0
#endif

#define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
                a_high, b_high, c_high, d_high) \
        (LTTNG_FEDORA_VERSION_CODE >= \
                LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
                LTTNG_FEDORA_VERSION_CODE < \
                LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high))

/* RT patch */

#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))

#ifdef RT_PATCH_VERSION
#define LTTNG_RT_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
#else
#define LTTNG_RT_VERSION_CODE 	0
#endif

#define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
		a_high, b_high, c_high, d_high) \
	(LTTNG_RT_VERSION_CODE >= \
		LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
		LTTNG_RT_VERSION_CODE < \
		LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))

#endif /* _LTTNG_KERNEL_VERSION_H */
Commit	Line	Data
	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	/*
	29	* The following defines are extracted from the toplevel Linux Makefile and
	30	* passed on the command line -with '-D'.
	31	*/
	32
	33	#ifndef LTTNG_LINUX_MAJOR
	34	#define LTTNG_LINUX_MAJOR 0
	35	#endif
	36
	37	#ifndef LTTNG_LINUX_MINOR
	38	#define LTTNG_LINUX_MINOR 0
	39	#endif
	40
	41	#ifndef LTTNG_LINUX_PATCH
	42	#define LTTNG_LINUX_PATCH 0
	43	#endif
	44
	45	/*
	46	* Some stable releases have overflowed the 8bits allocated to the sublevel in
	47	* the version code. To determine if the current kernel is affected, use the
	48	* sublevel version from the Makefile. This is currently true for the 4.4.256
	49	* and 4.9.256 stable releases.
	50	*
	51	* When the sublevel has overflowed, use the values from the Makefile instead
	52	* of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
	53	* Otherwise, keep using the version code from the headers to minimise the
	54	* behavior change and avoid regressions.
	55	*/
	56	#if (LTTNG_LINUX_PATCH >= 256)
	57
	58	#define LTTNG_KERNEL_VERSION(a, b, c) \
	59	(((a) << 24) + ((b) << 16) + (c))
	60
	61	#define LTTNG_LINUX_VERSION_CODE \
	62	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
	63
	64	#else
	65
	66	#define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
	67	#define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE
	68
	69	#endif
	70
	71	#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
	72	#include <generated/utsrelease.h>
	73	#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
	74	#include <linux/utsrelease.h>
	75	#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
	76
	77	/*
	78	* This macro checks if the kernel version is between the two specified
	79	* versions (lower limit inclusive, upper limit exclusive).
	80	*/
	81	#define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
	82	(LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \
	83	LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high))
	84
	85	/* Ubuntu */
	86
	87	#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
	88	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
	89
	90	#ifdef UTS_UBUNTU_RELEASE_ABI
	91	#define LTTNG_UBUNTU_VERSION_CODE \
	92	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
	93	#else
	94	#define LTTNG_UBUNTU_VERSION_CODE 0
	95	#endif
	96
	97	#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	98	a_high, b_high, c_high, d_high) \
	99	(LTTNG_UBUNTU_VERSION_CODE >= \
	100	LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	101	LTTNG_UBUNTU_VERSION_CODE < \
	102	LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	103
	104	/* Debian */
	105
	106	#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
	107	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	108
	109	#ifdef DEBIAN_API_VERSION
	110	#define LTTNG_DEBIAN_VERSION_CODE \
	111	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
	112	#else
	113	#define LTTNG_DEBIAN_VERSION_CODE 0
	114	#endif
	115
	116	#define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
	117	a_high, b_high, c_high, d_high, e_high, f_high) \
	118	(LTTNG_DEBIAN_VERSION_CODE >= \
	119	LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	120	LTTNG_DEBIAN_VERSION_CODE < \
	121	LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	122
	123	#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
	124	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	125
	126	/* RHEL */
	127
	128	#ifdef RHEL_API_VERSION
	129	#define LTTNG_RHEL_VERSION_CODE \
	130	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
	131	#else
	132	#define LTTNG_RHEL_VERSION_CODE 0
	133	#endif
	134
	135	#define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
	136	a_high, b_high, c_high, d_high, e_high, f_high) \
	137	(LTTNG_RHEL_VERSION_CODE >= \
	138	LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	139	LTTNG_RHEL_VERSION_CODE < \
	140	LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	141
	142	/* SUSE Linux enterprise */
	143
	144	#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
	145	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	146
	147	#ifdef SLE_API_VERSION
	148	#define LTTNG_SLE_VERSION_CODE \
	149	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
	150	#else
	151	#define LTTNG_SLE_VERSION_CODE 0
	152	#endif
	153
	154	#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
	155	a_high, b_high, c_high, d_high, e_high, f_high) \
	156	(LTTNG_SLE_VERSION_CODE >= \
	157	LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	158	LTTNG_SLE_VERSION_CODE < \
	159	LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	160
	161	/* Fedora */
	162
	163	#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
	164	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))
	165
	166	#ifdef FEDORA_REVISION_VERSION
	167	#define LTTNG_FEDORA_VERSION_CODE \
	168	((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
	169	#else
	170	#define LTTNG_FEDORA_VERSION_CODE 0
	171	#endif
	172
	173	#define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	174	a_high, b_high, c_high, d_high) \
	175	(LTTNG_FEDORA_VERSION_CODE >= \
	176	LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	177	LTTNG_FEDORA_VERSION_CODE < \
	178	LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	179
	180	/* RT patch */
	181
	182	#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
	183	(((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))
	184
	185	#ifdef RT_PATCH_VERSION
	186	#define LTTNG_RT_VERSION_CODE \
	187	((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
	188	#else
	189	#define LTTNG_RT_VERSION_CODE 0
	190	#endif
	191
	192	#define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	193	a_high, b_high, c_high, d_high) \
	194	(LTTNG_RT_VERSION_CODE >= \
	195	LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	196	LTTNG_RT_VERSION_CODE < \
	197	LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	198
	199	#endif /* _LTTNG_KERNEL_VERSION_H */