1 /* SPDX-License-Identifier: GPL-2.0 */
6 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
7 #define _DEFAULT_SOURCE 1
12 #include <linux/compiler.h>
13 #include <sys/types.h>
15 #include <internal/cpumap.h>
18 extern const char perf_usage_string[];
19 extern const char perf_more_info_string[];
21 extern const char *input_name;
23 extern bool perf_host;
24 extern bool perf_guest;
26 /* General helper functions */
27 void usage(const char *err) __noreturn;
28 void die(const char *err, ...) __noreturn __printf(1, 2);
33 int mkdir_p(char *path, mode_t mode);
34 int rm_rf(const char *path);
35 int rm_rf_perf_data(const char *path);
36 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
37 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
39 size_t hex_width(u64 v);
41 int sysctl__max_stack(void);
43 bool sysctl__nmi_watchdog_enabled(void);
45 int fetch_kernel_version(unsigned int *puint,
46 char *str, size_t str_sz);
47 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
48 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
49 #define KVER_SUBLEVEL(x) ((x) & 0xff)
50 #define KVER_FMT "%d.%d.%d"
51 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
53 int perf_tip(char **strp, const char *dirpath);
55 #ifndef HAVE_SCHED_GETCPU_SUPPORT
56 int sched_getcpu(void);
59 extern bool perf_singlethreaded;
61 void perf_set_singlethreaded(void);
62 void perf_set_multithreaded(void);
64 char *perf_exe(char *buf, int len);
68 #define O_CLOEXEC 0x400000
69 #elif defined(__alpha__) || defined(__hppa__)
70 #define O_CLOEXEC 010000000
72 #define O_CLOEXEC 02000000
76 extern bool test_attr__enabled;
77 void test_attr__ready(void);
78 void test_attr__init(void);
79 struct perf_event_attr;
80 void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
81 int fd, int group_fd, unsigned long flags);
83 struct perf_debuginfod {
87 void perf_debuginfod_setup(struct perf_debuginfod *di);
89 char *filename_with_chroot(int pid, const char *filename);
91 int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x,
92 size_t msz, const void *init_val);
94 #define realloc_array_as_needed(a, n, x, v) ({ \
95 typeof(x) __x = (x); \
97 do_realloc_array_as_needed((void **)&(a), \
101 (const void *)(v)) : \
105 static inline bool host_is_bigendian(void)
107 #ifdef __BYTE_ORDER__
108 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
110 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
113 #error "Unrecognized __BYTE_ORDER__"
115 #else /* !__BYTE_ORDER__ */
116 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0};
119 ptr = (unsigned int *)(void *)str;
120 return *ptr == 0x01020304;
124 #endif /* __PERF_UTIL_H */