powerpc/numa: remove timed_topology_update()

timed_topology_update is a no-op now, so remove it and all call sites.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200612051238.1007764-11-nathanl@linux.ibm.com

arch/powerpc/include/asm/topology.h

@@ -97,7 +97,6 @@ extern int start_topology_update(void);
 extern int stop_topology_update(void);
 extern int prrn_is_enabled(void);
 extern int find_and_online_cpu_nid(int cpu);
-extern int timed_topology_update(int nsecs);
 #else
 static inline int start_topology_update(void)
 {
@@ -115,10 +114,6 @@ static inline int find_and_online_cpu_nid(int cpu)
 {
 	return 0;
 }
-static inline int timed_topology_update(int nsecs)
-{
-	return 0;
-}
 
 #endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
 

arch/powerpc/mm/numa.c

@@ -1124,14 +1124,6 @@ u64 memory_hotplug_max(void)
 #ifdef CONFIG_PPC_SPLPAR
 static int topology_inited;
 
-/*
- * Change polling interval for associativity changes.
- */
-int timed_topology_update(int nsecs)
-{
-	return 0;
-}
-
 /*
  * Retrieve the new associativity information for a virtual processor's
  * home node.
@@ -1147,7 +1139,6 @@ static long vphn_get_associativity(unsigned long cpu,
 	switch (rc) {
 	case H_SUCCESS:
 		dbg("VPHN hcall succeeded. Reset polling...\n");
-		timed_topology_update(0);
 		goto out;
 
 	case H_FUNCTION:

arch/powerpc/platforms/pseries/hotplug-cpu.c

@@ -263,7 +263,6 @@ static int dlpar_offline_cpu(struct device_node *dn)
 				break;
 
 			cpu_maps_update_done();
-			timed_topology_update(1);
 			rc = device_offline(get_cpu_device(cpu));
 			if (rc)
 				goto out;
@@ -302,7 +301,6 @@ static int dlpar_online_cpu(struct device_node *dn)
 			if (get_hard_smp_processor_id(cpu) != thread)
 				continue;
 			cpu_maps_update_done();
-			timed_topology_update(1);
 			find_and_online_cpu_nid(cpu);
 			rc = device_online(get_cpu_device(cpu));
 			if (rc) {