--- zzzz-none-000/linux-3.18.24/arch/mips/kernel/time.c	2015-10-31 20:39:51.000000000 +0000
+++ rtl96-5690pro-762/linux-3.18.24/arch/mips/kernel/time.c	2024-08-14 08:36:36.000000000 +0000
@@ -49,6 +49,7 @@
 	return rtc_mips_set_mmss(now.tv_sec);
 }
 
+#ifndef CONFIG_CPU_RLX
 static int null_perf_irq(void)
 {
 	return 0;
@@ -57,11 +58,12 @@
 int (*perf_irq)(void) = null_perf_irq;
 
 EXPORT_SYMBOL(perf_irq);
+#endif
 
 /*
  * time_init() - it does the following things.
  *
- * 1) plat_time_init() -
+ * 1) bsp_time_init() -
  *	a) (optional) set up RTC routines,
  *	b) (optional) calibrate and set the mips_hpt_frequency
  *	    (only needed if you intended to use cpu counter as timer interrupt