powerpc: Exclude arch_sd_sibiling_asym_packing() on UP

Only SMP systems care about load-balance features, plus this
saves some .text space on UP and also fixes the build.

Reported-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Michael Neuling <mikey@neuling.org>
LKML-Reference: <tip-76cbd8a8f8b0dddbff89a6708bd5bd13c0d21a00@git.kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a3f347c635b2ea91235660b02f6eedd630ad0651..9b41ece010b69b713ab2ec84f4fb86ef4a6fd294 100644 (file)
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1269,6 +1269,7 @@ unsigned long randomize_et_dyn(unsigned long base)
        return ret;
 }
 
+#ifdef CONFIG_SMP
 int arch_sd_sibiling_asym_packing(void)
 {
        if (cpu_has_feature(CPU_FTR_ASYM_SMT)) {
@@ -1277,3 +1278,4 @@ int arch_sd_sibiling_asym_packing(void)
        }
        return 0;
 }
+#endif