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 */
  16 void usage(const char *err) __noreturn;
  17 void die(const char *err, ...) __noreturn __printf(1, 2);
  18
  19 struct dirent;
  20 struct strlist;
  21
  22 int mkdir_p(char *path, mode_t mode);
  23 int rm_rf(const char *path);
  24 int rm_rf_perf_data(const char *path);
  25 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
  26 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
  27
  28 size_t hex_width(u64 v);
  29
  30 int sysctl__max_stack(void);
  31
  32 bool sysctl__nmi_watchdog_enabled(void);
  33
  34 int 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
  42 const char *perf_tip(const char *dirpath);
  43
  44 #ifndef HAVE_SCHED_GETCPU_SUPPORT
  45 int sched_getcpu(void);
  46 #endif
  47
  48 extern bool perf_singlethreaded;
  49
  50 void perf_set_singlethreaded(void);
  51 void perf_set_multithreaded(void);
  52
  53 char *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 extern bool test_attr__enabled;
  66 void test_attr__ready(void);
  67 void test_attr__init(void);
  68 struct perf_event_attr;
  69 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
  70                      int fd, int group_fd, unsigned long flags);
  71 #endif /* GIT_COMPAT_UTIL_H */