91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
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// SPDX-License-Identifier: LGPL-2.1
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#ifndef PERF_FLAG_FD_NO_GROUP
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# define PERF_FLAG_FD_NO_GROUP (1UL << 0)
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#endif
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#ifndef PERF_FLAG_FD_OUTPUT
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# define PERF_FLAG_FD_OUTPUT (1UL << 1)
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#endif
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#ifndef PERF_FLAG_PID_CGROUP
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# define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */
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#endif
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#ifndef PERF_FLAG_FD_CLOEXEC
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# define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */
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#endif
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static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size,
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struct syscall_arg *arg)
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{
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bool show_prefix = arg->show_string_prefix;
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const char *prefix = "PERF_";
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int printed = 0, flags = arg->val;
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if (flags == 0)
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return 0;
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#define P_FLAG(n) \
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if (flags & PERF_FLAG_##n) { \
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printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
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flags &= ~PERF_FLAG_##n; \
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}
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P_FLAG(FD_NO_GROUP);
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P_FLAG(FD_OUTPUT);
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P_FLAG(PID_CGROUP);
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P_FLAG(FD_CLOEXEC);
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#undef P_FLAG
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if (flags)
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printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
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return printed;
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}
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#define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags
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struct attr_fprintf_args {
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size_t size, printed;
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char *bf;
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bool first;
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};
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static int attr__fprintf(FILE *fp __maybe_unused, const char *name, const char *val, void *priv)
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{
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struct attr_fprintf_args *args = priv;
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size_t printed = scnprintf(args->bf + args->printed , args->size - args->printed, "%s%s: %s", args->first ? "" : ", ", name, val);
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args->first = false;
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args->printed += printed;
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return printed;
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}
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static size_t perf_event_attr___scnprintf(struct perf_event_attr *attr, char *bf, size_t size, bool show_zeros __maybe_unused)
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{
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struct attr_fprintf_args args = {
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.printed = scnprintf(bf, size, "{ "),
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.size = size,
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.first = true,
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.bf = bf,
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};
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perf_event_attr__fprintf(stdout, attr, attr__fprintf, &args);
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return args.printed + scnprintf(bf + args.printed, size - args.printed, " }");
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}
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static size_t syscall_arg__scnprintf_augmented_perf_event_attr(struct syscall_arg *arg, char *bf, size_t size)
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{
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return perf_event_attr___scnprintf((void *)arg->augmented.args, bf, size, arg->trace->show_zeros);
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}
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static size_t syscall_arg__scnprintf_perf_event_attr(char *bf, size_t size, struct syscall_arg *arg)
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{
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if (arg->augmented.args)
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return syscall_arg__scnprintf_augmented_perf_event_attr(arg, bf, size);
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return scnprintf(bf, size, "%#lx", arg->val);
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}
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#define SCA_PERF_ATTR syscall_arg__scnprintf_perf_event_attr
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