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 <stdbool.h>
  10#include <stddef.h>
  11#include <stdlib.h>
  12#include <stdarg.h>
  13#include <linux/compiler.h>
  14#include <sys/types.h>
  15
  16/* General helper functions */
  17void usage(const char *err) __noreturn;
  18void die(const char *err, ...) __noreturn __printf(1, 2);
  19
  20static inline void *zalloc(size_t size)
  21{
  22        return calloc(1, size);
  23}
  24
  25#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
  26
  27struct dirent;
  28struct nsinfo;
  29struct strlist;
  30
  31int mkdir_p(char *path, mode_t mode);
  32int rm_rf(const char *path);
  33struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
  34bool lsdir_no_dot_filter(const char *name, struct dirent *d);
  35int copyfile(const char *from, const char *to);
  36int copyfile_mode(const char *from, const char *to, mode_t mode);
  37int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
  38
  39ssize_t readn(int fd, void *buf, size_t n);
  40ssize_t writen(int fd, const void *buf, size_t n);
  41
  42size_t hex_width(u64 v);
  43int hex2u64(const char *ptr, u64 *val);
  44
  45extern unsigned int page_size;
  46int __pure cacheline_size(void);
  47
  48int sysctl__max_stack(void);
  49
  50int fetch_kernel_version(unsigned int *puint,
  51                         char *str, size_t str_sz);
  52#define KVER_VERSION(x)         (((x) >> 16) & 0xff)
  53#define KVER_PATCHLEVEL(x)      (((x) >> 8) & 0xff)
  54#define KVER_SUBLEVEL(x)        ((x) & 0xff)
  55#define KVER_FMT        "%d.%d.%d"
  56#define KVER_PARAM(x)   KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
  57
  58const char *perf_tip(const char *dirpath);
  59
  60#ifndef HAVE_SCHED_GETCPU_SUPPORT
  61int sched_getcpu(void);
  62#endif
  63
  64#ifndef HAVE_SETNS_SUPPORT
  65int setns(int fd, int nstype);
  66#endif
  67
  68extern bool perf_singlethreaded;
  69
  70void perf_set_singlethreaded(void);
  71void perf_set_multithreaded(void);
  72
  73#ifndef O_CLOEXEC
  74#ifdef __sparc__
  75#define O_CLOEXEC      0x400000
  76#elif defined(__alpha__) || defined(__hppa__)
  77#define O_CLOEXEC      010000000
  78#else
  79#define O_CLOEXEC      02000000
  80#endif
  81#endif
  82
  83#endif /* GIT_COMPAT_UTIL_H */
  84