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
15/* General helper functions */
16void usage(const char *err) __noreturn;
17void die(const char *err, ...) __noreturn __printf(1, 2);
18
19struct dirent;
20struct strlist;
21
22int mkdir_p(char *path, mode_t mode);
23int rm_rf(const char *path);
24int rm_rf_perf_data(const char *path);
25struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
26bool lsdir_no_dot_filter(const char *name, struct dirent *d);
27
28size_t hex_width(u64 v);
29
30int sysctl__max_stack(void);
31
32int fetch_kernel_version(unsigned int *puint,
33			 char *str, size_t str_sz);
34#define KVER_VERSION(x)		(((x) >> 16) & 0xff)
35#define KVER_PATCHLEVEL(x)	(((x) >> 8) & 0xff)
36#define KVER_SUBLEVEL(x)	((x) & 0xff)
37#define KVER_FMT	"%d.%d.%d"
38#define KVER_PARAM(x)	KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
39
40const char *perf_tip(const char *dirpath);
41
42#ifndef HAVE_SCHED_GETCPU_SUPPORT
43int sched_getcpu(void);
44#endif
45
 
 
 
 
 
 
 
46extern bool perf_singlethreaded;
47
48void perf_set_singlethreaded(void);
49void perf_set_multithreaded(void);
50
51char *perf_exe(char *buf, int len);
52
53#ifndef O_CLOEXEC
54#ifdef __sparc__
55#define O_CLOEXEC      0x400000
56#elif defined(__alpha__) || defined(__hppa__)
57#define O_CLOEXEC      010000000
58#else
59#define O_CLOEXEC      02000000
60#endif
61#endif
62
63#endif /* GIT_COMPAT_UTIL_H */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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