x86: only compile setup_percpu.o on SMP

Impact: Minor build optimization

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index d367996693e..f30ff691c34 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -22,14 +22,8 @@
 # define DBG(x...)
 #endif
 
-/*
- * Could be inside CONFIG_HAVE_SETUP_PER_CPU_AREA with other stuff but
- * voyager wants cpu_number too.
- */
-#ifdef CONFIG_SMP
 DEFINE_PER_CPU(int, cpu_number);
 EXPORT_PER_CPU_SYMBOL(cpu_number);
-#endif
 
 #ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA