--- /dev/null
+--- a/arch/mips/ralink/irq-gic.c
++++ b/arch/mips/ralink/irq-gic.c
+@@ -2,6 +2,13 @@
+
+ #include <linux/of.h>
+ #include <linux/irqchip.h>
++#include <linux/irqchip/mips-gic.h>
++
++int get_c0_perfcount_int(void)
++{
++ return gic_get_c0_perfcount_int();
++}
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
+ void __init
+ arch_init_irq(void)