powerpc/pseries: Fix VPHN build errors on non-SMP systems

The header asm/hvcall.h was previously included indirectly via
smp.h. On non-SMP systems, however, these declarations are excluded
and the build breaks. This is easily fixed by including asm/hvcall.h
directly.

The VPHN feature is only meaningful on NUMA systems that implement
the SPLPAR option, so exclude the VPHN code on systems without
SPLPAR enabled.

Also, expose unmap_cpu_from_node() on systems with SPLPAR enabled,
even if CONFIG_HOTPLUG_CPU is disabled.

Lastly, map_cpu_to_node() is now needed by VPHN to manipulate the
node masks after boot time, so remove the __cpuinit annotation to
fix a section mismatch.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index aed188bd70db..fbfcfd04d25a 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -93,9 +93,20 @@ extern void __init dump_numa_cpu_topology(void);
 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
 
+#ifdef CONFIG_PPC_SPLPAR
 extern int start_topology_update(void);
 extern int stop_topology_update(void);
 #else
+static inline int start_topology_update(void)
+{
+        return 0;
+}
+static inline int stop_topology_update(void)
+{
+        return 0;
+}
+#endif /* CONFIG_PPC_SPLPAR */
+#else
 
 static inline void dump_numa_cpu_topology(void) {}
 
@@ -108,15 +119,6 @@ static inline void sysfs_remove_device_from_node(struct sys_device *dev,
                                                 int nid)
 {
 }
-
-static inline int start_topology_update(void)
-{
-        return 0;
-}
-static inline int stop_topology_update(void)
-{
-        return 0;
-}
 #endif /* CONFIG_NUMA */
 
 #include <asm-generic/topology.h>