tools/perf/trace/beauty/perf_event_open.c

   1 #ifndef PERF_FLAG_FD_NO_GROUP
   2 # define PERF_FLAG_FD_NO_GROUP          (1UL << 0)
   3 #endif
   4
   5 #ifndef PERF_FLAG_FD_OUTPUT
   6 # define PERF_FLAG_FD_OUTPUT            (1UL << 1)
   7 #endif
   8
   9 #ifndef PERF_FLAG_PID_CGROUP
  10 # define PERF_FLAG_PID_CGROUP           (1UL << 2) /* pid=cgroup id, per-cpu mode only */
  11 #endif
  12
  13 #ifndef PERF_FLAG_FD_CLOEXEC
  14 # define PERF_FLAG_FD_CLOEXEC           (1UL << 3) /* O_CLOEXEC */
  15 #endif
  16
  17 static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size,
  18                                                 struct syscall_arg *arg)
  19 {
  20         int printed = 0, flags = arg->val;
  21
  22         if (flags == 0)
  23                 return 0;
  24
  25 #define P_FLAG(n) \
  26         if (flags & PERF_FLAG_##n) { \
  27                 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
  28                 flags &= ~PERF_FLAG_##n; \
  29         }
  30
  31         P_FLAG(FD_NO_GROUP);
  32         P_FLAG(FD_OUTPUT);
  33         P_FLAG(PID_CGROUP);
  34         P_FLAG(FD_CLOEXEC);
  35 #undef P_FLAG
  36
  37         if (flags)
  38                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
  39
  40         return printed;
  41 }
  42
  43 #define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags