tools/perf/trace/beauty/eventfd.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #ifndef EFD_SEMAPHORE
   3 #define EFD_SEMAPHORE           1
   4 #endif
   5
   6 #ifndef EFD_NONBLOCK
   7 #define EFD_NONBLOCK            00004000
   8 #endif
   9
  10 #ifndef EFD_CLOEXEC
  11 #define EFD_CLOEXEC             02000000
  12 #endif
  13
  14 static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, struct syscall_arg *arg)
  15 {
  16         int printed = 0, flags = arg->val;
  17
  18         if (flags == 0)
  19                 return scnprintf(bf, size, "NONE");
  20 #define P_FLAG(n) \
  21         if (flags & EFD_##n) { \
  22                 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
  23                 flags &= ~EFD_##n; \
  24         }
  25
  26         P_FLAG(SEMAPHORE);
  27         P_FLAG(CLOEXEC);
  28         P_FLAG(NONBLOCK);
  29 #undef P_FLAG
  30
  31         if (flags)
  32                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
  33
  34         return printed;
  35 }
  36
  37 #define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags