1 // SPDX-License-Identifier: LGPL-2.1 2 #ifndef PERF_FLAG_FD_NO_GROUP 3 # define PERF_FLAG_FD_NO_GROUP (1UL << 0) 4 #endif 5 6 #ifndef PERF_FLAG_FD_OUTPUT 7 # define PERF_FLAG_FD_OUTPUT (1UL << 1) 8 #endif 9 10 #ifndef PERF_FLAG_PID_CGROUP 11 # define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ 12 #endif 13 14 #ifndef PERF_FLAG_FD_CLOEXEC 15 # define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ 16 #endif 17 18 static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size, 19 struct syscall_arg *arg) 20 { 21 bool show_prefix = arg->show_string_prefix; 22 const char *prefix = "PERF_"; 23 int printed = 0, flags = arg->val; 24 25 if (flags == 0) 26 return 0; 27 28 #define P_FLAG(n) \ 29 if (flags & PERF_FLAG_##n) { \ 30 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \ 31 flags &= ~PERF_FLAG_##n; \ 32 } 33 34 P_FLAG(FD_NO_GROUP); 35 P_FLAG(FD_OUTPUT); 36 P_FLAG(PID_CGROUP); 37 P_FLAG(FD_CLOEXEC); 38 #undef P_FLAG 39 40 if (flags) 41 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 42 43 return printed; 44 } 45 46 #define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags 47 48 struct attr_fprintf_args { 49 size_t size, printed; 50 char *bf; 51 bool first; 52 }; 53 54 static int attr__fprintf(FILE *fp __maybe_unused, const char *name, const char *val, void *priv) 55 { 56 struct attr_fprintf_args *args = priv; 57 size_t printed = scnprintf(args->bf + args->printed , args->size - args->printed, "%s%s: %s", args->first ? "" : ", ", name, val); 58 59 args->first = false; 60 args->printed += printed; 61 return printed; 62 } 63 64 static size_t perf_event_attr___scnprintf(struct perf_event_attr *attr, char *bf, size_t size, bool show_zeros __maybe_unused) 65 { 66 struct attr_fprintf_args args = { 67 .printed = scnprintf(bf, size, "{ "), 68 .size = size, 69 .first = true, 70 .bf = bf, 71 }; 72 73 perf_event_attr__fprintf(stdout, attr, attr__fprintf, &args); 74 return args.printed + scnprintf(bf + args.printed, size - args.printed, " }"); 75 } 76 77 static size_t syscall_arg__scnprintf_augmented_perf_event_attr(struct syscall_arg *arg, char *bf, size_t size) 78 { 79 return perf_event_attr___scnprintf((void *)arg->augmented.args, bf, size, arg->trace->show_zeros); 80 } 81 82 static size_t syscall_arg__scnprintf_perf_event_attr(char *bf, size_t size, struct syscall_arg *arg) 83 { 84 if (arg->augmented.args) 85 return syscall_arg__scnprintf_augmented_perf_event_attr(arg, bf, size); 86 87 return scnprintf(bf, size, "%#lx", arg->val); 88 } 89 90 #define SCA_PERF_ATTR syscall_arg__scnprintf_perf_event_attr 91