1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __TOOLS_LINUX_KERNEL_H 3#define __TOOLS_LINUX_KERNEL_H 4 5#include <stdarg.h> 6#include <stddef.h> 7#include <assert.h> 8#include <linux/build_bug.h> 9#include <linux/compiler.h> 10#include <linux/math.h> 11#include <linux/panic.h> 12#include <endian.h> 13#include <byteswap.h> 14 15#ifndef UINT_MAX 16#define UINT_MAX (~0U) 17#endif 18 19#define _RET_IP_ ((unsigned long)__builtin_return_address(0)) 20 21#define PERF_ALIGN(x, a) __PERF_ALIGN_MASK(x, (typeof(x))(a)-1) 22#define __PERF_ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) 23 24#ifndef offsetof 25#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) 26#endif 27 28#ifndef container_of 29/** 30 * container_of - cast a member of a structure out to the containing structure 31 * @ptr: the pointer to the member. 32 * @type: the type of the container struct this is embedded in. 33 * @member: the name of the member within the struct. 34 * 35 */ 36#define container_of(ptr, type, member) ({ \ 37 const typeof(((type *)0)->member) * __mptr = (ptr); \ 38 (type *)((char *)__mptr - offsetof(type, member)); }) 39#endif 40 41#ifndef max 42#define max(x, y) ({ \ 43 typeof(x) _max1 = (x); \ 44 typeof(y) _max2 = (y); \ 45 (void) (&_max1 == &_max2); \ 46 _max1 > _max2 ? _max1 : _max2; }) 47#endif 48 49#ifndef min 50#define min(x, y) ({ \ 51 typeof(x) _min1 = (x); \ 52 typeof(y) _min2 = (y); \ 53 (void) (&_min1 == &_min2); \ 54 _min1 < _min2 ? _min1 : _min2; }) 55#endif 56 57#define max_t(type, x, y) max((type)x, (type)y) 58#define min_t(type, x, y) min((type)x, (type)y) 59#define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi) 60 61#ifndef BUG_ON 62#ifdef NDEBUG 63#define BUG_ON(cond) do { if (cond) {} } while (0) 64#else 65#define BUG_ON(cond) assert(!(cond)) 66#endif 67#endif 68#define BUG() BUG_ON(1) 69 70#if __BYTE_ORDER == __BIG_ENDIAN 71#define cpu_to_le16 bswap_16 72#define cpu_to_le32 bswap_32 73#define cpu_to_le64 bswap_64 74#define le16_to_cpu bswap_16 75#define le32_to_cpu bswap_32 76#define le64_to_cpu bswap_64 77#define cpu_to_be16 78#define cpu_to_be32 79#define cpu_to_be64 80#define be16_to_cpu 81#define be32_to_cpu 82#define be64_to_cpu 83#else 84#define cpu_to_le16 85#define cpu_to_le32 86#define cpu_to_le64 87#define le16_to_cpu 88#define le32_to_cpu 89#define le64_to_cpu 90#define cpu_to_be16 bswap_16 91#define cpu_to_be32 bswap_32 92#define cpu_to_be64 bswap_64 93#define be16_to_cpu bswap_16 94#define be32_to_cpu bswap_32 95#define be64_to_cpu bswap_64 96#endif 97 98int vscnprintf(char *buf, size_t size, const char *fmt, va_list args); 99int scnprintf(char * buf, size_t size, const char * fmt, ...); 100int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); 101 102#ifndef ARRAY_SIZE 103#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) 104#endif 105 106#define current_gfp_context(k) 0 107#define synchronize_rcu() 108 109#endif 110