2 files changed, 46 insertions, 0 deletions
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index c208d6f56e63..71d419362634 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -105,3 +105,47 @@ void trace_event(union perf_event *event)
 	}
 	printf(".\n");
 }
+
+static struct debug_variable {
+	const char *name;
+	int *ptr;
+} debug_variables[] = {
+	{ .name = "verbose", .ptr = &verbose },
+	{ .name = NULL, }
+};
+
+int perf_debug_option(const char *str)
+{
+	struct debug_variable *var = &debug_variables[0];
+	char *vstr, *s = strdup(str);
+	int v = 1;
+
+	vstr = strchr(s, '=');
+	if (vstr)
+		*vstr++ = 0;
+
+	while (var->name) {
+		if (!strcmp(s, var->name))
+			break;
+		var++;
+	}
+
+	if (!var->name) {
+		pr_err("Unknown debug variable name '%s'\n", s);
+		free(s);
+		return -1;
+	}
+
+	if (vstr) {
+		v = atoi(vstr);
+		/*
+		 * Allow only values in range (0, 10),
+		 * otherwise set 0.
+		 */
+		v = (v < 0) || (v > 10) ? 0 : v;
+	}
+
+	*var->ptr = v;
+	free(s);
+	return 0;
+}
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 1cb808123242..89fb6b0f7ab2 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -39,4 +39,6 @@ void pr_stat(const char *fmt, ...);
 
 int eprintf(int level, int var, const char *fmt, ...) __attribute__((format(printf, 3, 4)));
 
+int perf_debug_option(const char *str);
+
 #endif	/* __PERF_DEBUG_H */