Ejemplo n.º 1
0
static void rtas_event_scan(struct work_struct *w)
{
	unsigned int cpu;

	do_event_scan();

	get_online_cpus();

	/* raw_ OK because just using CPU as starting point. */
	cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
        if (cpu >= nr_cpu_ids) {
		cpu = cpumask_first(cpu_online_mask);

		if (first_pass) {
			first_pass = 0;
			event_scan_delay = 30*HZ/rtas_event_scan_rate;

			if (surveillance_timeout != -1) {
				pr_debug("rtasd: enabling surveillance\n");
				enable_surveillance(surveillance_timeout);
				pr_debug("rtasd: surveillance enabled\n");
			}
		}
	}

	schedule_delayed_work_on(cpu, &event_scan_work,
		__round_jiffies_relative(event_scan_delay, cpu));

	put_online_cpus();
}
Ejemplo n.º 2
0
static void rtas_event_scan(struct work_struct *w)
{
	unsigned int cpu;

	do_event_scan();

	get_online_cpus();

	cpu = next_cpu(smp_processor_id(), cpu_online_map);
	if (cpu == NR_CPUS) {
		cpu = first_cpu(cpu_online_map);

		if (first_pass) {
			first_pass = 0;
			event_scan_delay = 30*HZ/rtas_event_scan_rate;

			if (surveillance_timeout != -1) {
				pr_debug("rtasd: enabling surveillance\n");
				enable_surveillance(surveillance_timeout);
				pr_debug("rtasd: surveillance enabled\n");
			}
		}
	}

	schedule_delayed_work_on(cpu, &event_scan_work,
		__round_jiffies_relative(event_scan_delay, cpu));

	put_online_cpus();
}
Ejemplo n.º 3
0
static void do_event_scan_all_cpus(long delay)
{
	int cpu;

	lock_cpu_hotplug();
	cpu = first_cpu(cpu_online_map);
	for (;;) {
		set_cpus_allowed(current, cpumask_of_cpu(cpu));
		do_event_scan(rtas_token("event-scan"));
		set_cpus_allowed(current, CPU_MASK_ALL);

		/* Drop hotplug lock, and sleep for the specified delay */
		unlock_cpu_hotplug();
		msleep_interruptible(delay);
		lock_cpu_hotplug();

		cpu = next_cpu(cpu, cpu_online_map);
		if (cpu == NR_CPUS)
			break;
	}
	unlock_cpu_hotplug();
}
Ejemplo n.º 4
0
static int rtasd(void *unused)
{
	unsigned int err_type;
	int cpu = 0;
	int event_scan = rtas_token("event-scan");
	cpumask_t all = CPU_MASK_ALL;
	int rc;

	daemonize("rtasd");

	if (event_scan == RTAS_UNKNOWN_SERVICE || get_eventscan_parms() == -1)
		goto error;

	rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
	if (!rtas_log_buf) {
		printk(KERN_ERR "rtasd: no memory\n");
		goto error;
	}

	/* We can use rtas_log_buf now */
	no_more_logging = 0;

	printk(KERN_ERR "RTAS daemon started\n");

	DEBUG("will sleep for %d jiffies\n", (HZ*60/rtas_event_scan_rate) / 2);

	/* See if we have any error stored in NVRAM */
	memset(logdata, 0, rtas_error_log_max);

	rc = nvram_read_error_log(logdata, rtas_error_log_max, &err_type);
	if (!rc) {
		if (err_type != ERR_FLAG_ALREADY_LOGGED) {
			pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0);
		}
	}

	/* First pass. */
	lock_cpu_hotplug();
	for_each_online_cpu(cpu) {
		DEBUG("scheduling on %d\n", cpu);
		set_cpus_allowed(current, cpumask_of_cpu(cpu));
		DEBUG("watchdog scheduled on cpu %d\n", smp_processor_id());

		do_event_scan(event_scan);
		set_current_state(TASK_INTERRUPTIBLE);
		schedule_timeout(HZ);
	}
	unlock_cpu_hotplug();

	if (surveillance_timeout != -1) {
		DEBUG("enabling surveillance\n");
		enable_surveillance(surveillance_timeout);
		DEBUG("surveillance enabled\n");
	}

	lock_cpu_hotplug();
	cpu = first_cpu_const(mk_cpumask_const(cpu_online_map));
	for (;;) {
		set_cpus_allowed(current, cpumask_of_cpu(cpu));
		do_event_scan(event_scan);
		set_cpus_allowed(current, all);

		/* Drop hotplug lock, and sleep for a bit (at least
		 * one second since some machines have problems if we
		 * call event-scan too quickly). */
		unlock_cpu_hotplug();
		set_current_state(TASK_INTERRUPTIBLE);
		schedule_timeout((HZ*60/rtas_event_scan_rate) / 2);
		lock_cpu_hotplug();

		cpu = next_cpu_const(cpu, mk_cpumask_const(cpu_online_map));
		if (cpu == NR_CPUS)
			cpu = first_cpu_const(mk_cpumask_const(cpu_online_map));
	}

error:
	/* Should delete proc entries */
	return -EINVAL;
}