tools/perf/trace/beauty/eventfd.c

   1 #ifndef EFD_SEMAPHORE
   2 #define EFD_SEMAPHORE           1
   3 #endif
   4
   5 #ifndef EFD_NONBLOCK
   6 #define EFD_NONBLOCK            00004000
   7 #endif
   8
   9 #ifndef EFD_CLOEXEC
  10 #define EFD_CLOEXEC             02000000
  11 #endif
  12
  13 static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, struct syscall_arg *arg)
  14 {
  15         int printed = 0, flags = arg->val;
  16
  17         if (flags == 0)
  18                 return scnprintf(bf, size, "NONE");
  19 #define P_FLAG(n) \
  20         if (flags & EFD_##n) { \
  21                 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
  22                 flags &= ~EFD_##n; \
  23         }
  24
  25         P_FLAG(SEMAPHORE);
  26         P_FLAG(CLOEXEC);
  27         P_FLAG(NONBLOCK);
  28 #undef P_FLAG
  29
  30         if (flags)
  31                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
  32
  33         return printed;
  34 }
  35
  36 #define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags