x86/cpu: Add a missing prototype for arch_smt_update()

.. in order to fix a -Wmissing-prototype warning.

No functional change.

Signed-off-by: Benjamin Thiel <b.thiel@posteo.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200109121723.8151-1-b.thiel@posteo.de

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 2e4d90294fe67cded7b5baa2b465c4f8008b6880..6b95f18255fa45d1954025e91f148c79ebb6c9d7 100644 (file)
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -14,6 +14,7 @@
 #include <linux/sched/mm.h>
 #include <linux/sched/clock.h>
 #include <linux/sched/task.h>
+#include <linux/sched/smt.h>
 #include <linux/init.h>
 #include <linux/kprobes.h>
 #include <linux/kgdb.h>