diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index bc788126397b26300a61986921dbe4f250708ea9..e05ba817f8ce0facf07fdbaf140612145e6fbeb5 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -68,28 +68,6 @@
 #include <linux/unistd.h>
 #include <linux/types.h>
 
-void get_term_dimensions(struct winsize *ws)
-{
-	char *s = getenv("LINES");
-
-	if (s != NULL) {
-		ws->ws_row = atoi(s);
-		s = getenv("COLUMNS");
-		if (s != NULL) {
-			ws->ws_col = atoi(s);
-			if (ws->ws_row && ws->ws_col)
-				return;
-		}
-	}
-#ifdef TIOCGWINSZ
-	if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
-	    ws->ws_row && ws->ws_col)
-		return;
-#endif
-	ws->ws_row = 25;
-	ws->ws_col = 80;
-}
-
 static void perf_top__update_print_entries(struct perf_top *top)
 {
 	if (top->print_entries > 9)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 7622f15bcfb764fc6be29484bd55e151131cd119..8f3bf388e4146873ef6efb7cad8bc37868409f53 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -1,10 +1,6 @@
 #ifndef _PERF_PERF_H
 #define _PERF_PERF_H
 
-struct winsize;
-
-void get_term_dimensions(struct winsize *ws);
-
 #include <asm/unistd.h>
 
 #if defined(__i386__)
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 252b889ac8c2eb999899725e5465146c1f12a39b..805d1f52c5b48034772a6f1c44cb29776e82e886 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -220,3 +220,25 @@ void dump_stack(void)
 #else
 void dump_stack(void) {}
 #endif
+
+void get_term_dimensions(struct winsize *ws)
+{
+	char *s = getenv("LINES");
+
+	if (s != NULL) {
+		ws->ws_row = atoi(s);
+		s = getenv("COLUMNS");
+		if (s != NULL) {
+			ws->ws_col = atoi(s);
+			if (ws->ws_row && ws->ws_col)
+				return;
+		}
+	}
+#ifdef TIOCGWINSZ
+	if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
+	    ws->ws_row && ws->ws_col)
+		return;
+#endif
+	ws->ws_row = 25;
+	ws->ws_col = 80;
+}
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index c2330918110c13a6b227697f0425abfd526076cc..ec5de5e3330ca7a8373012f847902e3b95e405a2 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -271,4 +271,7 @@ void dump_stack(void);
 
 extern unsigned int page_size;
 
+struct winsize;
+void get_term_dimensions(struct winsize *ws);
+
 #endif