1 files changed, 79 insertions, 0 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
new file mode 100644
index 000000000..98e992801
--- /dev/null
+++ b/tools/perf/builtin-evlist.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Builtin evlist command: Show the list of event selectors present
+ * in a perf.data file.
+ */
+#include "builtin.h"
+
+#include <linux/list.h>
+
+#include "perf.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/evsel_fprintf.h"
+#include "util/parse-events.h"
+#include <subcmd/parse-options.h>
+#include "util/session.h"
+#include "util/data.h"
+#include "util/debug.h"
+#include <linux/err.h>
+
+static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
+{
+	struct perf_session *session;
+	struct evsel *pos;
+	struct perf_data data = {
+		.path      = file_name,
+		.mode      = PERF_DATA_MODE_READ,
+		.force     = details->force,
+	};
+	bool has_tracepoint = false;
+
+	session = perf_session__new(&data, 0, NULL);
+	if (IS_ERR(session))
+		return PTR_ERR(session);
+
+	evlist__for_each_entry(session->evlist, pos) {
+		evsel__fprintf(pos, details, stdout);
+
+		if (pos->core.attr.type == PERF_TYPE_TRACEPOINT)
+			has_tracepoint = true;
+	}
+
+	if (has_tracepoint && !details->trace_fields)
+		printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n");
+
+	perf_session__delete(session);
+	return 0;
+}
+
+int cmd_evlist(int argc, const char **argv)
+{
+	struct perf_attr_details details = { .verbose = false, };
+	const struct option options[] = {
+	OPT_STRING('i', "input", &input_name, "file", "Input file name"),
+	OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
+	OPT_BOOLEAN('v', "verbose", &details.verbose,
+		    "Show all event attr details"),
+	OPT_BOOLEAN('g', "group", &details.event_group,
+		    "Show event group information"),
+	OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"),
+	OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"),
+	OPT_END()
+	};
+	const char * const evlist_usage[] = {
+		"perf evlist [<options>]",
+		NULL
+	};
+
+	argc = parse_options(argc, argv, options, evlist_usage, 0);
+	if (argc)
+		usage_with_options(evlist_usage, options);
+
+	if (details.event_group && (details.verbose || details.freq)) {
+		usage_with_options_msg(evlist_usage, options,
+			"--group option is not compatible with other options\n");
+	}
+
+	return __cmd_evlist(input_name, &details);
+}