static int kenvctrld()

in char/envctrl.c [983:1022]

• 35 lines of code
• 7 McCabe index (conditional complexity)

static int kenvctrld(void *__unused)
{
	int poll_interval;
	int whichcpu;
	char tempbuf[10];
	struct i2c_child_t *cputemp;

	if (NULL == (cputemp = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON))) {
		printk(KERN_ERR  PFX
		       "kenvctrld unable to monitor CPU temp-- exiting\n");
		return -ENODEV;
	}

	poll_interval = 5000; /* TODO env_mon_interval */

	printk(KERN_INFO PFX "%s starting...\n", current->comm);
	for (;;) {
		msleep_interruptible(poll_interval);

		if (kthread_should_stop())
			break;
		
		for (whichcpu = 0; whichcpu < ENVCTRL_MAX_CPU; ++whichcpu) {
			if (0 < envctrl_read_cpu_info(whichcpu, cputemp,
						      ENVCTRL_CPUTEMP_MON,
						      tempbuf)) {
				if (tempbuf[0] >= shutdown_temperature) {
					printk(KERN_CRIT 
						"%s: WARNING: CPU%i temperature %i C meets or exceeds "\
						"shutdown threshold %i C\n", 
						current->comm, whichcpu, 
						tempbuf[0], shutdown_temperature);
					envctrl_do_shutdown();
				}
			}
		}
	}
	printk(KERN_INFO PFX "%s exiting...\n", current->comm);
	return 0;
}