diff --git a/.gitignore b/.gitignore
index 558b09f1e48beb5f2bc36fedafcec8d97a664a89..87595dcd32961c7fa0caaa43b0ffd9ed82f92221 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,6 +43,11 @@ ncscope.*
 #ctag files
 tags
 
+#gtag files
+GPATH
+GRTAGS
+GTAGS
+
 .idea
 .vscode
 *.code-workspace
diff --git a/bsp/imx6ul/rtconfig.h b/bsp/imx6ul/rtconfig.h
index e71a36b7c59059f05adfc70218c52eb62916b337..600d5521445079a4b810cde5a69f4b3ba5c92ac2 100644
--- a/bsp/imx6ul/rtconfig.h
+++ b/bsp/imx6ul/rtconfig.h
@@ -9,6 +9,7 @@
 /* RT-Thread Kernel */
 
 #define RT_NAME_MAX 8
+#define RT_CPUS_NR 1
 #define RT_ALIGN_SIZE 8
 #define RT_THREAD_PRIORITY_32
 #define RT_THREAD_PRIORITY_MAX 32
@@ -49,6 +50,7 @@
 #define RT_CONSOLEBUF_SIZE 128
 #define RT_CONSOLE_DEVICE_NAME "uart1"
 #define RT_VER_NUM 0x50002
+#define RT_BACKTRACE_LEVEL_MAX_NR 32
 #define RT_USING_CACHE
 #define RT_USING_HW_ATOMIC
 #define RT_USING_CPU_FFS