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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __PERF_UTIL_H #define __PERF_UTIL_H #define _BSD_SOURCE 1 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ #define _DEFAULT_SOURCE 1 #include <dirent.h> #include <fcntl.h> #include <stdbool.h> #include <stddef.h> #include <linux/compiler.h> #include <sys/types.h> #ifndef __cplusplus #include <internal/cpumap.h> #endif extern const char perf_usage_string[]; extern const char perf_more_info_string[]; extern const char *input_name; extern bool perf_host; extern bool perf_guest; /* General helper functions */ void usage(const char *err) __noreturn; void die(const char *err, ...) __noreturn __printf(1, 2); struct dirent; struct strlist; int mkdir_p(char *path, mode_t mode); int rm_rf(const char *path); int rm_rf_perf_data(const char *path); struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); bool lsdir_no_dot_filter(const char *name, struct dirent *d); size_t hex_width(u64 v); int sysctl__max_stack(void); bool sysctl__nmi_watchdog_enabled(void); int fetch_kernel_version(unsigned int *puint, char *str, size_t str_sz); #define KVER_VERSION(x) (((x) >> 16) & 0xff) #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) #define KVER_SUBLEVEL(x) ((x) & 0xff) #define KVER_FMT "%d.%d.%d" #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) int perf_tip(char **strp, const char *dirpath); #ifndef HAVE_SCHED_GETCPU_SUPPORT int sched_getcpu(void); #endif #ifndef HAVE_SCANDIRAT_SUPPORT int scandirat(int dirfd, const char *dirp, struct dirent ***namelist, int (*filter)(const struct dirent *), int (*compar)(const struct dirent **, const struct dirent **)); #endif extern bool perf_singlethreaded; void perf_set_singlethreaded(void); void perf_set_multithreaded(void); char *perf_exe(char *buf, int len); #ifndef O_CLOEXEC #ifdef __sparc__ #define O_CLOEXEC 0x400000 #elif defined(__alpha__) || defined(__hppa__) #define O_CLOEXEC 010000000 #else #define O_CLOEXEC 02000000 #endif #endif extern bool test_attr__enabled; void test_attr__ready(void); void test_attr__init(void); struct perf_event_attr; void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, int fd, int group_fd, unsigned long flags); struct perf_debuginfod { const char *urls; bool set; }; void perf_debuginfod_setup(struct perf_debuginfod *di); char *filename_with_chroot(int pid, const char *filename); int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x, size_t msz, const void *init_val); #define realloc_array_as_needed(a, n, x, v) ({ \ typeof(x) __x = (x); \ __x >= (n) ? \ do_realloc_array_as_needed((void **)&(a), \ &(n), \ __x, \ sizeof(*(a)), \ (const void *)(v)) : \ 0; \ }) static inline bool host_is_bigendian(void) { #ifdef __BYTE_ORDER__ #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ return false; #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ return true; #else #error "Unrecognized __BYTE_ORDER__" #endif #else /* !__BYTE_ORDER__ */ unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0}; unsigned int *ptr; ptr = (unsigned int *)(void *)str; return *ptr == 0x01020304; #endif } #endif /* __PERF_UTIL_H */ |