More simple kthread experiments, failed wait queue experiment

kernel_module/kthread_uninterruptible.c

@@ -0,0 +1,38 @@
+/*
+Let's block the entire kernel! Yay!
+
+Also try after dmesg -n 1 to become convinced of the full blockage.
+*/
+
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+
+MODULE_LICENSE("GPL");
+
+static struct task_struct *kthread;
+
+static int work_func(void *data)
+{
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	int i = 0;
+	while (!kthread_should_stop()) {
+		printk(KERN_INFO "%d\n", i);
+		i++;
+		if (i == 10)
+			i = 0;
+	}
+	return 0;
+}
+
+int init_module(void)
+{
+	kthread = kthread_create(work_func, NULL, "mykthread");
+	wake_up_process(kthread);
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	kthread_stop(kthread);
+}