+static int __devinit
+salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
+{
+ unsigned int i, cpu = (unsigned long)hcpu;
+ unsigned long flags;
+ struct salinfo_data *data;
+ switch (action) {
+ case CPU_ONLINE:
+ spin_lock_irqsave(&data_saved_lock, flags);
+ for (i = 0, data = salinfo_data;
+ i < ARRAY_SIZE(salinfo_data);
+ ++i, ++data) {
+ cpu_set(cpu, data->cpu_event);
+ salinfo_work_to_do(data);
+ }
+ spin_unlock_irqrestore(&data_saved_lock, flags);
+ break;
+ case CPU_DEAD:
+ spin_lock_irqsave(&data_saved_lock, flags);
+ for (i = 0, data = salinfo_data;
+ i < ARRAY_SIZE(salinfo_data);
+ ++i, ++data) {
+ struct salinfo_data_saved *data_saved;
+ int j;
+ for (j = ARRAY_SIZE(data->data_saved) - 1, data_saved = data->data_saved + j;
+ j >= 0;
+ --j, --data_saved) {
+ if (data_saved->buffer && data_saved->cpu == cpu) {
+ shift1_data_saved(data, j);
+ }
+ }
+ cpu_clear(cpu, data->cpu_event);
+ }
+ spin_unlock_irqrestore(&data_saved_lock, flags);
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block salinfo_cpu_notifier =
+{
+ .notifier_call = salinfo_cpu_callback,
+ .priority = 0,
+};
+