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

/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
 *
 * lttng-kernel-version.h
 *
 * Contains helpers to check kernel version conditions.
 *
 * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_KERNEL_VERSION_H
#define _LTTNG_KERNEL_VERSION_H

#include <linux/version.h>
#include <generated/utsrelease.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

/*
 * 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	/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
	2	*
	3	* lttng-kernel-version.h
	4	*
	5	* Contains helpers to check kernel version conditions.
	6	*
	7	* Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*/
	9
	10	#ifndef _LTTNG_KERNEL_VERSION_H
	11	#define _LTTNG_KERNEL_VERSION_H
	12
	13	#include <linux/version.h>
	14	#include <generated/utsrelease.h>
	15
	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
	54	#define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
	55	#define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE
	56
	57	#endif
	58
	59	/*
	60	* This macro checks if the kernel version is between the two specified
	61	* versions (lower limit inclusive, upper limit exclusive).
	62	*/
	63	#define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
	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))
	66
	67	/* Ubuntu */
	68
	69	#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
	70	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
	71
	72	#ifdef UTS_UBUNTU_RELEASE_ABI
	73	#define LTTNG_UBUNTU_VERSION_CODE \
	74	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
	75	#else
	76	#define LTTNG_UBUNTU_VERSION_CODE 0
	77	#endif
	78
	79	#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	80	a_high, b_high, c_high, d_high) \
	81	(LTTNG_UBUNTU_VERSION_CODE >= \
	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
	86	/* Debian */
	87
	88	#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
	89	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	90
	91	#ifdef DEBIAN_API_VERSION
	92	#define LTTNG_DEBIAN_VERSION_CODE \
	93	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
	94	#else
	95	#define LTTNG_DEBIAN_VERSION_CODE 0
	96	#endif
	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) \
	100	(LTTNG_DEBIAN_VERSION_CODE >= \
	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
	105	#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
	106	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	107
	108	/* RHEL */
	109
	110	#ifdef RHEL_API_VERSION
	111	#define LTTNG_RHEL_VERSION_CODE \
	112	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
	113	#else
	114	#define LTTNG_RHEL_VERSION_CODE 0
	115	#endif
	116
	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) \
	119	(LTTNG_RHEL_VERSION_CODE >= \
	120	LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	121	LTTNG_RHEL_VERSION_CODE < \
	122	LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	123
	124	/* SUSE Linux enterprise */
	125
	126	#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
	127	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
	128
	129	#ifdef SLE_API_VERSION
	130	#define LTTNG_SLE_VERSION_CODE \
	131	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
	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
	143	/* Fedora */
	144
	145	#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
	146	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))
	147
	148	#ifdef FEDORA_REVISION_VERSION
	149	#define LTTNG_FEDORA_VERSION_CODE \
	150	((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
	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
	162	/* RT patch */
	163
	164	#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
	165	(((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))
	166
	167	#ifdef RT_PATCH_VERSION
	168	#define LTTNG_RT_VERSION_CODE \
	169	((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
	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
	181	#endif /* _LTTNG_KERNEL_VERSION_H */