kernel misc: Replace __get_cpu_var uses

Replace uses of __get_cpu_var for address calculation with this_cpu_ptr.

Cc: akpm@linux-foundation.org
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/printk/printk.c

@@ -2628,7 +2628,7 @@ void wake_up_klogd(void)
 	preempt_disable();
 	if (waitqueue_active(&log_wait)) {
 		this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP);
-		irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
+		irq_work_queue(this_cpu_ptr(&wake_up_klogd_work));
 	}
 	preempt_enable();
 }
@@ -2644,7 +2644,7 @@ int printk_deferred(const char *fmt, ...)
 	va_end(args);
 
 	__this_cpu_or(printk_pending, PRINTK_PENDING_OUTPUT);
-	irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
+	irq_work_queue(this_cpu_ptr(&wake_up_klogd_work));
 	preempt_enable();
 
 	return r;

kernel/smp.c

@@ -164,7 +164,7 @@ static int generic_exec_single(int cpu, struct call_single_data *csd,
 	if (!csd) {
 		csd = &csd_stack;
 		if (!wait)
-			csd = &__get_cpu_var(csd_data);
+			csd = this_cpu_ptr(&csd_data);
 	}
 
 	csd_lock(csd);
@@ -229,7 +229,7 @@ static void flush_smp_call_function_queue(bool warn_cpu_offline)
 
 	WARN_ON(!irqs_disabled());
 
-	head = &__get_cpu_var(call_single_queue);
+	head = this_cpu_ptr(&call_single_queue);
 	entry = llist_del_all(head);
 	entry = llist_reverse_order(entry);
 
@@ -419,7 +419,7 @@ void smp_call_function_many(const struct cpumask *mask,
 		return;
 	}
 
-	cfd = &__get_cpu_var(cfd_data);
+	cfd = this_cpu_ptr(&cfd_data);
 
 	cpumask_and(cfd->cpumask, mask, cpu_online_mask);
 	cpumask_clear_cpu(this_cpu, cfd->cpumask);