1 files changed, 66 insertions, 0 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
new file mode 100644
index 00000000000..c99e0de7e54
--- /dev/null
+++ b/tools/perf/builtin-evlist.c
@@ -0,0 +1,66 @@
+/*
+ * Builtin evlist command: Show the list of event selectors present
+ * in a perf.data file.
+ */
+#include "builtin.h"
+
+#include "util/util.h"
+
+#include <linux/list.h>
+
+#include "perf.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/parse-events.h"
+#include "util/parse-options.h"
+#include "util/session.h"
+#include "util/data.h"
+
+static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
+{
+	struct perf_session *session;
+	struct perf_evsel *pos;
+	struct perf_data_file file = {
+		.path = file_name,
+		.mode = PERF_DATA_MODE_READ,
+	};
+
+	session = perf_session__new(&file, 0, NULL);
+	if (session == NULL)
+		return -ENOMEM;
+
+	evlist__for_each(session->evlist, pos)
+		perf_evsel__fprintf(pos, details, stdout);
+
+	perf_session__delete(session);
+	return 0;
+}
+
+int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
+{
+	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_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)) {
+		pr_err("--group option is not compatible with other options\n");
+		usage_with_options(evlist_usage, options);
+	}
+
+	return __cmd_evlist(input_name, &details);
+}