linuxdebug/kernel/universe.c

#include <linux/hrtimer.h>
#include <linux/printk.h>
#include <linux/delay.h>

static struct hrtimer timer;

static void boom(void) {
	printk("⠀⠀⠀⠀⠀⠀⠀⠀⣀⡤⠤⢒⣦⠶⠶⠶⣦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⢀⡴⠋⠿⠀⠀⠈⠋⠀⠀⠀⠁⠙⠷⣦⣤⣀⠀⠀⠀⠀⠀\n");
	printk("	⠀⢀⡴⠶⣴⠻⠀⠀⠐⣶⠞⠁⠀⢀⠀⠀⠀⣀⠀⠙⠀⠹⢶⣀⠀⠀⠀\n");
	printk("	⢠⡿⠀⠀⠗⠀⠀⠀⠀⠃⠀⠀⢰⣏⠁⠀⠀⠈⡏⠉⠀⠀⠸⡏⢣⠀⠀\n");
	printk("	⣺⠂⠀⣖⠀⠀⠀⠀⢀⡀⢀⣹⣦⡽⣦⣴⣤⣀⢠⡀⠀⢀⠀⠑⠼⣇⠀\n");
	printk("	⠹⡟⡄⢈⣩⠀⠀⠲⠾⠛⡛⠋⠉⠀⡀⢀⣿⠙⠾⣦⡐⢿⡁⠀⡀⢸⡀\n");
	printk("	⠀⢿⣷⡀⠀⢚⡀⠈⢉⡳⢵⡄⢠⠀⠇⣿⣿⠒⠚⠍⠁⢀⣤⡰⠛⠛⠁\n");
	printk("	⠀⠀⠈⠛⠛⠋⠈⠉⠉⠙⠓⣷⠸⣼⣸⢻⣛⠓⠶⠞⠓⠛⠉⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⢀⣠⡴⣞⣭⣿⡄⠋⡇⢸⢥⡽⢳⣤⡀⠀⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠐⣯⡁⣉⠛⢏⣸⣇⣷⣉⣿⡴⢧⠈⠊⠹⣧⡀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠙⠶⣷⣆⣀⣌⠁⠘⣁⣨⡀⢈⣀⣰⣠⣿⠇⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⣿⣷⠛⡋⣏⠙⠿⠛⠉⠉⠁⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⢻⠀⡇⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⢸⠃⡇⢻⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠀⠀⡀⣴⣿⠟⠀⠀⣷⠈⢿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀\n");
	printk("	⠀⠀⠀⠀⠀⠀⠀⠀⠐⠋⠁⠠⠃⠀⠈⠀⠈⠙⠂⠀⠀⠀⠀⠀⠀⠀⠀\n");
}




static enum hrtimer_restart sst_cb(struct hrtimer *timer) {
	timer = NULL;
	printk("Three...\n");
	mdelay(1000);
	printk("two...\n");
	mdelay(1000);
	printk("one...\n");
	mdelay(1000);
	boom();
	// Marvin knows everything about cookies.
	 //timer->function = NULL;
	return HRTIMER_NORESTART;
}

void arm_sst(void) {
	hrtimer_init(&timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
	timer.function = sst_cb;

	printk("Armed the universe's timer.\n");
	hrtimer_start(&timer, ms_to_ktime(75000), HRTIMER_MODE_REL);
	
}