1ac600533SPrasad Joshi #include <linux/stringify.h> 2ac600533SPrasad Joshi 3f3150089SPekka Enberg #ifndef KVM__UTIL_H 4f3150089SPekka Enberg #define KVM__UTIL_H 5ad054a21SCyrill Gorcunov 62a601aafSPekka Enberg #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 72a601aafSPekka Enberg 8ad054a21SCyrill Gorcunov /* 9ad054a21SCyrill Gorcunov * Some bits are stolen from perf tool :) 10ad054a21SCyrill Gorcunov */ 11ad054a21SCyrill Gorcunov 12a2857479SCyrill Gorcunov #include <assert.h> 13ad054a21SCyrill Gorcunov #include <unistd.h> 14ad054a21SCyrill Gorcunov #include <stdio.h> 15ad054a21SCyrill Gorcunov #include <stddef.h> 16ad054a21SCyrill Gorcunov #include <stdlib.h> 17ad054a21SCyrill Gorcunov #include <stdarg.h> 18ad054a21SCyrill Gorcunov #include <string.h> 19ed036f03SCyrill Gorcunov #include <stdbool.h> 20ad054a21SCyrill Gorcunov #include <errno.h> 21ad054a21SCyrill Gorcunov #include <limits.h> 22ad054a21SCyrill Gorcunov #include <sys/param.h> 23ad054a21SCyrill Gorcunov #include <sys/types.h> 2461061257SMatt Evans #include <linux/types.h> 25ad054a21SCyrill Gorcunov 26ad054a21SCyrill Gorcunov #ifdef __GNUC__ 27ad054a21SCyrill Gorcunov #define NORETURN __attribute__((__noreturn__)) 28ad054a21SCyrill Gorcunov #else 29ad054a21SCyrill Gorcunov #define NORETURN 30ad054a21SCyrill Gorcunov #ifndef __attribute__ 31ad054a21SCyrill Gorcunov #define __attribute__(x) 32ad054a21SCyrill Gorcunov #endif 33ad054a21SCyrill Gorcunov #endif 34ad054a21SCyrill Gorcunov 35ed036f03SCyrill Gorcunov extern bool do_debug_print; 36ed036f03SCyrill Gorcunov 3737c34ca8SSasha Levin #define PROT_RW (PROT_READ|PROT_WRITE) 3837c34ca8SSasha Levin #define MAP_ANON_NORESERVE (MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE) 3937c34ca8SSasha Levin 40ad054a21SCyrill Gorcunov extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); 41ad054a21SCyrill Gorcunov extern void die_perror(const char *s) NORETURN; 42599ed2a8SCyrill Gorcunov extern int pr_err(const char *err, ...) __attribute__((format (printf, 1, 2))); 434542f276SCyrill Gorcunov extern void pr_warning(const char *err, ...) __attribute__((format (printf, 1, 2))); 444542f276SCyrill Gorcunov extern void pr_info(const char *err, ...) __attribute__((format (printf, 1, 2))); 45ad054a21SCyrill Gorcunov extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); 46ad054a21SCyrill Gorcunov 474542f276SCyrill Gorcunov #define pr_debug(fmt, ...) \ 48ed036f03SCyrill Gorcunov do { \ 49ed036f03SCyrill Gorcunov if (do_debug_print) \ 504542f276SCyrill Gorcunov pr_info("(%s) %s:%d: " fmt, __FILE__, \ 51ed036f03SCyrill Gorcunov __func__, __LINE__, ##__VA_ARGS__); \ 52ed036f03SCyrill Gorcunov } while (0) 53ed036f03SCyrill Gorcunov 54a2857479SCyrill Gorcunov # 55b3594ec7SCyrill Gorcunov #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) 56a2857479SCyrill Gorcunov #define BUG_ON(condition) assert(!(condition)) 57b3594ec7SCyrill Gorcunov 58ad054a21SCyrill Gorcunov #define DIE_IF(cnd) \ 59ad054a21SCyrill Gorcunov do { \ 60ad054a21SCyrill Gorcunov if (cnd) \ 61ad054a21SCyrill Gorcunov die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ 62ad054a21SCyrill Gorcunov __stringify(cnd) "\n"); \ 63ad054a21SCyrill Gorcunov } while (0) 64ad054a21SCyrill Gorcunov 65*d642f038SLai Jiangshan #define WARN_ON(condition) ({ \ 66*d642f038SLai Jiangshan int __ret_warn_on = !!(condition); \ 67*d642f038SLai Jiangshan if (__ret_warn_on) \ 68*d642f038SLai Jiangshan pr_warning("(%s) %s:%d: failed condition: %s", \ 69*d642f038SLai Jiangshan __FILE__, __func__, __LINE__, \ 70*d642f038SLai Jiangshan __stringify(condition)); \ 71*d642f038SLai Jiangshan __ret_warn_on; \ 72*d642f038SLai Jiangshan }) 73*d642f038SLai Jiangshan 74aa400b00SPrasad Joshi #define MSECS_TO_USECS(s) ((s) * 1000) 75aa400b00SPrasad Joshi 76aa400b00SPrasad Joshi /* Millisecond sleep */ 77aa400b00SPrasad Joshi static inline void msleep(unsigned int msecs) 78aa400b00SPrasad Joshi { 79aa400b00SPrasad Joshi usleep(MSECS_TO_USECS(msecs)); 80aa400b00SPrasad Joshi } 8161061257SMatt Evans 8261061257SMatt Evans void *mmap_hugetlbfs(const char *htlbfs_path, u64 size); 8361061257SMatt Evans 84f3150089SPekka Enberg #endif /* KVM__UTIL_H */ 85