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-rw-r--r--arch/x86/xen/smp.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index be5cbb2b7c6..bf51a466d62 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();