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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __TOOLS_LINUX_KERNEL_H3#define __TOOLS_LINUX_KERNEL_H4 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_MAX16#define UINT_MAX (~0U)17#endif18 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 offsetof25#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)26#endif27 28#ifndef container_of29/**30 * container_of - cast a member of a structure out to the containing structure31 * @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#endif40 41#ifndef max42#define max(x, y) ({ \43 typeof(x) _max1 = (x); \44 typeof(y) _max2 = (y); \45 (void) (&_max1 == &_max2); \46 _max1 > _max2 ? _max1 : _max2; })47#endif48 49#ifndef min50#define min(x, y) ({ \51 typeof(x) _min1 = (x); \52 typeof(y) _min2 = (y); \53 (void) (&_min1 == &_min2); \54 _min1 < _min2 ? _min1 : _min2; })55#endif56 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_ON62#ifdef NDEBUG63#define BUG_ON(cond) do { if (cond) {} } while (0)64#else65#define BUG_ON(cond) assert(!(cond))66#endif67#endif68#define BUG() BUG_ON(1)69 70#if __BYTE_ORDER == __BIG_ENDIAN71#define cpu_to_le16 bswap_1672#define cpu_to_le32 bswap_3273#define cpu_to_le64 bswap_6474#define le16_to_cpu bswap_1675#define le32_to_cpu bswap_3276#define le64_to_cpu bswap_6477#define cpu_to_be1678#define cpu_to_be3279#define cpu_to_be6480#define be16_to_cpu81#define be32_to_cpu82#define be64_to_cpu83#else84#define cpu_to_le1685#define cpu_to_le3286#define cpu_to_le6487#define le16_to_cpu88#define le32_to_cpu89#define le64_to_cpu90#define cpu_to_be16 bswap_1691#define cpu_to_be32 bswap_3292#define cpu_to_be64 bswap_6493#define be16_to_cpu bswap_1694#define be32_to_cpu bswap_3295#define be64_to_cpu bswap_6496#endif97 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_SIZE103#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))104#endif105 106#define current_gfp_context(k) 0107#define synchronize_rcu()108 109#endif110