x86, xen: fix build when !CONFIG_HOTPLUG_CPU

Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index be5cbb2b7c60..bf51a466d62c 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -332,6 +332,7 @@ static void xen_smp_cpus_done(unsigned int max_cpus)
 {
 }
 
+#ifdef CONFIG_HOTPLUG_CPU
 int xen_cpu_disable(void)
 {
         unsigned int cpu = smp_processor_id();
@@ -368,6 +369,23 @@ void xen_play_dead(void)
         cpu_bringup();
 }
 
+#else /* !CONFIG_HOTPLUG_CPU */
+int xen_cpu_disable(void)
+{
+        return -ENOSYS;
+}
+
+void xen_cpu_die(unsigned int cpu)
+{
+        BUG();
+}
+
+void xen_play_dead(void)
+{
+        BUG();
+}
+
+#endif
 static void stop_self(void *v)
 {
         int cpu = smp_processor_id();