x1000: disable CPU idle stats by default

There's no point including this in normal builds: the stats are not
used for anything, they are not really of interest to anyone except
developers, and add a small overhead to the kernel tick.

Change-Id: I1b4f67cc62d11d634a8cec279dca513dd10eea96

1 files changed, 2 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_x1000/kernel-x1000.c b/firmware/target/mips/ingenic_x1000/kernel-x1000.c
index c8105a3446..eb7c3d6124 100644
--- a/firmware/target/mips/ingenic_x1000/kernel-x1000.c
+++ b/firmware/target/mips/ingenic_x1000/kernel-x1000.c
@@ -57,6 +57,7 @@ void tick_start(unsigned interval_in_ms)
 
 void OST(void)
 {
+#ifdef X1000_CPUIDLE_STATS
     /* CPU idle time accounting */
     uint32_t now = __ost_read32();
     uint32_t div = now - __cpu_idle_reftick;
@@ -67,6 +68,7 @@ void OST(void)
         __cpu_idle_ticks = 0;
         __cpu_idle_reftick = now;
     }
+#endif
 
     /* Call regular kernel tick */
     jz_write(OST_1FLG, 0);