[PATCH 3.16 238/410] powerpc/pseries: Add empty update_numa_cpu_lookup_table() for NUMA=n

[Ben Hutchings]

3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Corentin Labbe <clabbe@xxxxxxxxxxxx>

commit c1e150ceb61e4a585bad156da15c33bfe89f5858 upstream.

When CONFIG_NUMA is not set, the build fails with:

  arch/powerpc/platforms/pseries/hotplug-cpu.c:335:4:
  error: dÃclaration implicite de la fonction ÂÂupdate_numa_cpu_lookup_tableÂÂ

So we have to add update_numa_cpu_lookup_table() as an empty function
when CONFIG_NUMA is not set.

Fixes: 1d9a090783be ("powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove")
Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 arch/powerpc/include/asm/topology.h | 3 +++
 1 file changed, 3 insertions(+)

--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -76,6 +76,9 @@ static inline void sysfs_remove_device_f
 						int nid)
 {
 }
+
+static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
+
 #endif /* CONFIG_NUMA */
 
 #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)