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