LXR linux/tools/perf/util/util.h

   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 nsinfo;
  21struct strlist;
  22
  23int mkdir_p(char *path, mode_t mode);
  24int rm_rf(const char *path);
  25int rm_rf_perf_data(const char *path);
  26struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
  27bool lsdir_no_dot_filter(const char *name, struct dirent *d);
  28int copyfile(const char *from, const char *to);
  29int copyfile_mode(const char *from, const char *to, mode_t mode);
  30int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
  31int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);
  32
  33ssize_t readn(int fd, void *buf, size_t n);
  34ssize_t writen(int fd, const void *buf, size_t n);
  35
  36size_t hex_width(u64 v);
  37
  38extern unsigned int page_size;
  39int __pure cacheline_size(void);
  40
  41int sysctl__max_stack(void);
  42
  43int fetch_kernel_version(unsigned int *puint,
  44                         char *str, size_t str_sz);
  45#define KVER_VERSION(x)         (((x) >> 16) & 0xff)
  46#define KVER_PATCHLEVEL(x)      (((x) >> 8) & 0xff)
  47#define KVER_SUBLEVEL(x)        ((x) & 0xff)
  48#define KVER_FMT        "%d.%d.%d"
  49#define KVER_PARAM(x)   KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
  50
  51const char *perf_tip(const char *dirpath);
  52
  53#ifndef HAVE_SCHED_GETCPU_SUPPORT
  54int sched_getcpu(void);
  55#endif
  56
  57extern bool perf_singlethreaded;
  58
  59void perf_set_singlethreaded(void);
  60void perf_set_multithreaded(void);
  61
  62char *perf_exe(char *buf, int len);
  63
  64#ifndef O_CLOEXEC
  65#ifdef __sparc__
  66#define O_CLOEXEC      0x400000
  67#elif defined(__alpha__) || defined(__hppa__)
  68#define O_CLOEXEC      010000000
  69#else
  70#define O_CLOEXEC      02000000
  71#endif
  72#endif
  73
  74#endif /* GIT_COMPAT_UTIL_H */
  75