perf tools: Consolidate --control option parsing into one function

Consolidate --control option parsing into one function, in preparation
for adding FIFO file name options.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20200901093758.32293-2-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -2234,27 +2234,9 @@ static int parse_control_option(const struct option *opt,
 				const char *str,
 				int unset __maybe_unused)
 {
-	char *comma = NULL, *endptr = NULL;
-	struct record_opts *config = (struct record_opts *)opt->value;
-
-	if (strncmp(str, "fd:", 3))
-		return -EINVAL;
-
-	config->ctl_fd = strtoul(&str[3], &endptr, 0);
-	if (endptr == &str[3])
-		return -EINVAL;
-
-	comma = strchr(str, ',');
-	if (comma) {
-		if (endptr != comma)
-			return -EINVAL;
-
-		config->ctl_fd_ack = strtoul(comma + 1, &endptr, 0);
-		if (endptr == comma + 1 || *endptr != '\0')
-			return -EINVAL;
-	}
+	struct record_opts *opts = opt->value;
 
-	return 0;
+	return evlist__parse_control(str, &opts->ctl_fd, &opts->ctl_fd_ack);
 }
 
 static void switch_output_size_warn(struct record *rec)

tools/perf/builtin-stat.c

@@ -1045,27 +1045,9 @@ static int parse_control_option(const struct option *opt,
 				const char *str,
 				int unset __maybe_unused)
 {
-	char *comma = NULL, *endptr = NULL;
-	struct perf_stat_config *config = (struct perf_stat_config *)opt->value;
+	struct perf_stat_config *config = opt->value;
 
-	if (strncmp(str, "fd:", 3))
-		return -EINVAL;
-
-	config->ctl_fd = strtoul(&str[3], &endptr, 0);
-	if (endptr == &str[3])
-		return -EINVAL;
-
-	comma = strchr(str, ',');
-	if (comma) {
-		if (endptr != comma)
-			return -EINVAL;
-
-		config->ctl_fd_ack = strtoul(comma + 1, &endptr, 0);
-		if (endptr == comma + 1 || *endptr != '\0')
-			return -EINVAL;
-	}
-
-	return 0;
+	return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack);
 }
 
 static struct option stat_options[] = {

tools/perf/util/evlist.c

@@ -1727,6 +1727,30 @@ struct evsel *perf_evlist__reset_weak_group(struct evlist *evsel_list,
 	return leader;
 }
 
+int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack)
+{
+	char *comma = NULL, *endptr = NULL;
+
+	if (strncmp(str, "fd:", 3))
+		return -EINVAL;
+
+	*ctl_fd = strtoul(&str[3], &endptr, 0);
+	if (endptr == &str[3])
+		return -EINVAL;
+
+	comma = strchr(str, ',');
+	if (comma) {
+		if (endptr != comma)
+			return -EINVAL;
+
+		*ctl_fd_ack = strtoul(comma + 1, &endptr, 0);
+		if (endptr == comma + 1 || *endptr != '\0')
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
 int evlist__initialize_ctlfd(struct evlist *evlist, int fd, int ack)
 {
 	if (fd == -1) {

tools/perf/util/evlist.h

@@ -373,6 +373,7 @@ enum evlist_ctl_cmd {
 	EVLIST_CTL_CMD_ACK
 };
 
+int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack);
 int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack);
 int evlist__finalize_ctlfd(struct evlist *evlist);
 bool evlist__ctlfd_initialized(struct evlist *evlist);