LXR linux/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
  13static 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
  37