[PATCH] x86-64: Fix vsyscall.c compilation on UP

[firefly-linux-kernel-4.4.55.git] / arch / x86_64 / kernel / vsyscall.c

diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
index a730bacecb0be186625cb0cec338f76e1dc6b6c0..92546c1526f1fece35fb8ed07bfeefc7b3414c0d 100644 (file)
--- a/arch/x86_64/kernel/vsyscall.c
+++ b/arch/x86_64/kernel/vsyscall.c
@@ -274,6 +274,7 @@ static void __cpuinit cpu_vsyscall_init(void *arg)
        vsyscall_set_cpu(raw_smp_processor_id());
 }
 
+#ifdef CONFIG_HOTPLUG_CPU
 static int __cpuinit
 cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
 {
@@ -282,6 +283,7 @@ cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
                smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
        return NOTIFY_DONE;
 }
+#endif
 
 static void __init map_vsyscall(void)
 {