1 files changed, 14 insertions, 2 deletions

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 8b610dd9e2f6..aba953421a03 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -48,6 +48,8 @@ static int parse_callchain_mode(const char *value)
 		callchain_param.mode = CHAIN_FOLDED;
 		return 0;
 	}
+
+	pr_err("Invalid callchain mode: %s\n", value);
 	return -1;
 }
 
@@ -63,6 +65,8 @@ static int parse_callchain_order(const char *value)
 		callchain_param.order_set = true;
 		return 0;
 	}
+
+	pr_err("Invalid callchain order: %s\n", value);
 	return -1;
 }
 
@@ -80,6 +84,8 @@ static int parse_callchain_sort_key(const char *value)
 		callchain_param.branch_callstack = 1;
 		return 0;
 	}
+
+	pr_err("Invalid callchain sort key: %s\n", value);
 	return -1;
 }
 
@@ -97,6 +103,8 @@ static int parse_callchain_value(const char *value)
 		callchain_param.value = CCVAL_COUNT;
 		return 0;
 	}
+
+	pr_err("Invalid callchain config key: %s\n", value);
 	return -1;
 }
 
@@ -210,13 +218,17 @@ int perf_callchain_config(const char *var, const char *value)
 		return parse_callchain_sort_key(value);
 	if (!strcmp(var, "threshold")) {
 		callchain_param.min_percent = strtod(value, &endptr);
-		if (value == endptr)
+		if (value == endptr) {
+			pr_err("Invalid callchain threshold: %s\n", value);
 			return -1;
+		}
 	}
 	if (!strcmp(var, "print-limit")) {
 		callchain_param.print_limit = strtod(value, &endptr);
-		if (value == endptr)
+		if (value == endptr) {
+			pr_err("Invalid callchain print limit: %s\n", value);
 			return -1;
+		}
 	}
 
 	return 0;