Index: kernel/arch/mips32/include/arch/asm.h
===================================================================
--- kernel/arch/mips32/include/arch/asm.h	(revision 0366d09d1929d3cd61f8f612f9ea15794bc5650c)
+++ kernel/arch/mips32/include/arch/asm.h	(revision 4bfb5a01e39428a8780576ab646b543a6a873151)
@@ -89,4 +89,16 @@
 extern bool interrupts_disabled(void);
 
+/** Enables interrupts and blocks until an interrupt arrives,
+ * atomically if possible on target architecture.
+ * Disables interrupts again before returning to caller.
+ */
+_NO_TRACE static inline void cpu_interruptible_sleep(void)
+{
+	// FIXME: do this atomically
+	interrupts_enable();
+	cpu_sleep();
+	interrupts_disable();
+}
+
 #endif