cpu: Provide smpboot_thread_init() on !CONFIG_SMP kernels as well

Now that we are using smpboot_thread_init() in init/main.c as well,
provide it for !CONFIG_SMP as well.

This addresses a !CONFIG_SMP build failure.

Cc: Paul E. McKenney <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 091badf0f6ba..c0fb6b1b4712 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -214,6 +214,10 @@ static inline void cpu_notifier_register_done(void)
 {
 }
 
+static inline void smpboot_thread_init(void)
+{
+}
+
 #endif /* CONFIG_SMP */
 extern struct bus_type cpu_subsys;