diff options
Diffstat (limited to 'backport-include/linux/kernel.h')
| -rw-r--r-- | backport-include/linux/kernel.h | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/backport-include/linux/kernel.h b/backport-include/linux/kernel.h new file mode 100644 index 0000000..df344eb --- /dev/null +++ b/backport-include/linux/kernel.h @@ -0,0 +1,255 @@ +#ifndef __BACKPORT_KERNEL_H +#define __BACKPORT_KERNEL_H +#include_next <linux/kernel.h> +#include <linux/version.h> +/* + * some older kernels don't have this and thus don't + * include it from kernel.h like new kernels + */ +#include <linux/printk.h> + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) +/** + * The following things are out of ./include/linux/kernel.h + * The new iwlwifi driver is using them. + */ +#define strict_strtoul LINUX_BACKPORT(strict_strtoul) +extern int strict_strtoul(const char *, unsigned int, unsigned long *); +#define strict_strtol LINUX_BACKPORT(strict_strtol) +extern int strict_strtol(const char *, unsigned int, long *); +#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) */ + +/* + * This backports: + * + * From a3860c1c5dd1137db23d7786d284939c5761d517 Mon Sep 17 00:00:00 2001 + * From: Xi Wang <xi.wang@gmail.com> + * Date: Thu, 31 May 2012 16:26:04 -0700 + * Subject: [PATCH] introduce SIZE_MAX + */ +#ifndef SIZE_MAX +#define SIZE_MAX (~(size_t)0) +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26) +extern const char hex_asc[]; +#endif + +#ifndef hex_asc_hi +#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] +#endif +#ifndef hex_asc_lo +#define hex_asc_lo(x) hex_asc[((x) & 0x0f)] +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,2,0) +static inline char *hex_byte_pack(char *buf, u8 byte) +{ + *buf++ = hex_asc_hi(byte); + *buf++ = hex_asc_lo(byte); + return buf; +} +#endif + +/* This backports: + * + * commit 36a26c69b4c70396ef569c3452690fba0c1dec08 + * Author: Nicholas Bellinger <nab@linux-iscsi.org> + * Date: Tue Jul 26 00:35:26 2011 -0700 + * + * kernel.h: Add DIV_ROUND_UP_ULL and DIV_ROUND_UP_SECTOR_T macro usage + */ +#ifndef DIV_ROUND_UP_ULL +#define DIV_ROUND_UP_ULL(ll,d) \ + ({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; }) +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,0) +int __must_check kstrtoull_from_user(const char __user *s, size_t count, unsigned int base, unsigned long long *res); +int __must_check kstrtoll_from_user(const char __user *s, size_t count, unsigned int base, long long *res); +int __must_check kstrtoul_from_user(const char __user *s, size_t count, unsigned int base, unsigned long *res); +int __must_check kstrtol_from_user(const char __user *s, size_t count, unsigned int base, long *res); +int __must_check kstrtouint_from_user(const char __user *s, size_t count, unsigned int base, unsigned int *res); +int __must_check kstrtoint_from_user(const char __user *s, size_t count, unsigned int base, int *res); +int __must_check kstrtou16_from_user(const char __user *s, size_t count, unsigned int base, u16 *res); +int __must_check kstrtos16_from_user(const char __user *s, size_t count, unsigned int base, s16 *res); +int __must_check kstrtou8_from_user(const char __user *s, size_t count, unsigned int base, u8 *res); +int __must_check kstrtos8_from_user(const char __user *s, size_t count, unsigned int base, s8 *res); + +static inline int __must_check kstrtou64_from_user(const char __user *s, size_t count, unsigned int base, u64 *res) +{ + return kstrtoull_from_user(s, count, base, res); +} + +static inline int __must_check kstrtos64_from_user(const char __user *s, size_t count, unsigned int base, s64 *res) +{ + return kstrtoll_from_user(s, count, base, res); +} + +static inline int __must_check kstrtou32_from_user(const char __user *s, size_t count, unsigned int base, u32 *res) +{ + return kstrtouint_from_user(s, count, base, res); +} + +static inline int __must_check kstrtos32_from_user(const char __user *s, size_t count, unsigned int base, s32 *res) +{ + return kstrtoint_from_user(s, count, base, res); +} +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39) +/* + * kstrto* was included in kernel 2.6.38.4 and causes conflicts with the + * version included in compat-drivers. We use strict_strtol to check if + * kstrto* is already available. + */ +#ifndef strict_strtoull +/* Internal, do not use. */ +int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res); +int __must_check _kstrtol(const char *s, unsigned int base, long *res); + +int __must_check kstrtoull(const char *s, unsigned int base, unsigned long long *res); +int __must_check kstrtoll(const char *s, unsigned int base, long long *res); +static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res) +{ + /* + * We want to shortcut function call, but + * __builtin_types_compatible_p(unsigned long, unsigned long long) = 0. + */ + if (sizeof(unsigned long) == sizeof(unsigned long long) && + __alignof__(unsigned long) == __alignof__(unsigned long long)) + return kstrtoull(s, base, (unsigned long long *)res); + else + return _kstrtoul(s, base, res); +} + +static inline int __must_check kstrtol(const char *s, unsigned int base, long *res) +{ + /* + * We want to shortcut function call, but + * __builtin_types_compatible_p(long, long long) = 0. + */ + if (sizeof(long) == sizeof(long long) && + __alignof__(long) == __alignof__(long long)) + return kstrtoll(s, base, (long long *)res); + else + return _kstrtol(s, base, res); +} + +int __must_check kstrtouint(const char *s, unsigned int base, unsigned int *res); +int __must_check kstrtoint(const char *s, unsigned int base, int *res); + +static inline int __must_check kstrtou64(const char *s, unsigned int base, u64 *res) +{ + return kstrtoull(s, base, res); +} + +static inline int __must_check kstrtos64(const char *s, unsigned int base, s64 *res) +{ + return kstrtoll(s, base, res); +} + +static inline int __must_check kstrtou32(const char *s, unsigned int base, u32 *res) +{ + return kstrtouint(s, base, res); +} + +static inline int __must_check kstrtos32(const char *s, unsigned int base, s32 *res) +{ + return kstrtoint(s, base, res); +} + +int __must_check kstrtou16(const char *s, unsigned int base, u16 *res); +int __must_check kstrtos16(const char *s, unsigned int base, s16 *res); +int __must_check kstrtou8(const char *s, unsigned int base, u8 *res); +int __must_check kstrtos8(const char *s, unsigned int base, s8 *res); +#endif /* ifndef strict_strtol */ + +#endif /* < 2.6.39 */ + +#ifndef USHRT_MAX +#define USHRT_MAX ((u16)(~0U)) +#endif + +#ifndef SHRT_MAX +#define SHRT_MAX ((s16)(USHRT_MAX>>1)) +#endif + +#ifndef SHRT_MIN +#define SHRT_MIN ((s16)(-SHRT_MAX - 1)) +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) +#define hex_to_bin LINUX_BACKPORT(hex_to_bin) +int hex_to_bin(char ch); +#endif + +#ifndef __round_mask +#define __round_mask(x, y) ((__typeof__(x))((y)-1)) +#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) +#define round_down(x, y) ((x) & ~__round_mask(x, y)) +#endif + +#ifndef DIV_ROUND_CLOSEST +#define DIV_ROUND_CLOSEST(x, divisor) ({ \ + typeof(divisor) __divisor = divisor; \ + (((x) + ((__divisor) / 2)) / (__divisor)); \ +}) +#endif + +#ifndef swap +#define swap(a, b) \ + do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) +#endif + +#ifndef lower_32_bits +#define lower_32_bits(n) ((u32)(n)) +#endif + +#ifndef USHORT_MAX +#define USHORT_MAX ((u16)(~0U)) +#define SHORT_MAX ((s16)(USHORT_MAX>>1)) +#define SHORT_MIN (-SHORT_MAX - 1) +#endif + +#ifndef clamp +#define clamp(val, min, max) ({ \ + typeof(val) __val = (val); \ + typeof(min) __min = (min); \ + typeof(max) __max = (max); \ + (void) (&__val == &__min); \ + (void) (&__val == &__max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) +#endif + +#ifndef clamp_t +#define clamp_t(type, val, min, max) ({ \ + type __val = (val); \ + type __min = (min); \ + type __max = (max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) +#endif + +#ifndef clamp_val +#define clamp_val(val, min, max) ({ \ + typeof(val) __val = (val); \ + typeof(val) __min = (min); \ + typeof(val) __max = (max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) +#endif + +#endif /* __BACKPORT_KERNEL_H */ + +/* + * We have to do this outside the include guard, because + * out own header (linux/export.h) has to include kernel.h + * indirectly (through module.h) and then undef's pr_fmt. + * Then, when the real kernel.h gets included again, it's + * not defined and we get problems ... + */ +#ifndef pr_fmt +#define pr_fmt(msg) msg +#endif |