创建

828ECO/rt-thread/components/lwp/terminal/Kconfig

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+menuconfig LWP_USING_TERMINAL
+    bool "Terminal I/O Subsystem"
+    depends on RT_USING_SMART
+    default y
+    select RT_USING_SERIAL_BYPASS
+
+if LWP_USING_TERMINAL
+    config LWP_PTY_MAX_PARIS_LIMIT
+        int "Max number of pty devices registered at the same time"
+        default 32
+        help
+            This upper limit is set to protect kernel memory from draining
+            out by the application if it keeps allocating pty devices.
+endif