xref: /linux/tools/perf/util/util.h (revision 78beef629fd95be4ed853b2d37b832f766bd96ca)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef GIT_COMPAT_UTIL_H
3 #define GIT_COMPAT_UTIL_H
4 
5 #define _BSD_SOURCE 1
6 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
7 #define _DEFAULT_SOURCE 1
8 
9 #include <fcntl.h>
10 #include <stdbool.h>
11 #include <stddef.h>
12 #include <linux/compiler.h>
13 #include <sys/types.h>
14 #include <internal/lib.h>
15 
16 /* General helper functions */
17 void usage(const char *err) __noreturn;
18 void die(const char *err, ...) __noreturn __printf(1, 2);
19 
20 struct dirent;
21 struct nsinfo;
22 struct strlist;
23 
24 int mkdir_p(char *path, mode_t mode);
25 int rm_rf(const char *path);
26 int rm_rf_perf_data(const char *path);
27 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
28 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
29 int copyfile(const char *from, const char *to);
30 int copyfile_mode(const char *from, const char *to, mode_t mode);
31 int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
32 int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);
33 
34 size_t hex_width(u64 v);
35 
36 extern unsigned int page_size;
37 
38 int sysctl__max_stack(void);
39 
40 int fetch_kernel_version(unsigned int *puint,
41 			 char *str, size_t str_sz);
42 #define KVER_VERSION(x)		(((x) >> 16) & 0xff)
43 #define KVER_PATCHLEVEL(x)	(((x) >> 8) & 0xff)
44 #define KVER_SUBLEVEL(x)	((x) & 0xff)
45 #define KVER_FMT	"%d.%d.%d"
46 #define KVER_PARAM(x)	KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
47 
48 const char *perf_tip(const char *dirpath);
49 
50 #ifndef HAVE_SCHED_GETCPU_SUPPORT
51 int sched_getcpu(void);
52 #endif
53 
54 extern bool perf_singlethreaded;
55 
56 void perf_set_singlethreaded(void);
57 void perf_set_multithreaded(void);
58 
59 char *perf_exe(char *buf, int len);
60 
61 #ifndef O_CLOEXEC
62 #ifdef __sparc__
63 #define O_CLOEXEC      0x400000
64 #elif defined(__alpha__) || defined(__hppa__)
65 #define O_CLOEXEC      010000000
66 #else
67 #define O_CLOEXEC      02000000
68 #endif
69 #endif
70 
71 #endif /* GIT_COMPAT_UTIL_H */
72