Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

[deliverable/linux.git] / arch / powerpc / mm / numa.c

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 7d6ebe3c3b9ba43a560cd9c61ac077e567dd8569..aa98cb3b59d82a3c9ff49f35089ba0244eca60d6 100644 (file)
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -194,7 +194,7 @@ static int *of_get_associativity(struct device_node *dev)
 /* Returns nid in the range [0..MAX_NUMNODES-1], or -1 if no useful numa
  * info is found.
  */
-static int of_node_to_nid(struct device_node *device)
+static int of_node_to_nid_single(struct device_node *device)
 {
        int nid = -1;
        unsigned int *tmp;
@@ -216,6 +216,28 @@ out:
        return nid;
 }
 
+/* Walk the device tree upwards, looking for an associativity id */
+int of_node_to_nid(struct device_node *device)
+{
+       struct device_node *tmp;
+       int nid = -1;
+
+       of_node_get(device);
+       while (device) {
+               nid = of_node_to_nid_single(device);
+               if (nid != -1)
+                       break;
+
+               tmp = device;
+               device = of_get_parent(tmp);
+               of_node_put(tmp);
+       }
+       of_node_put(device);
+
+       return nid;
+}
+EXPORT_SYMBOL_GPL(of_node_to_nid);
+
 /*
  * In theory, the "ibm,associativity" property may contain multiple
  * associativity lists because a resource may be multiply connected
@@ -300,7 +322,7 @@ static int __cpuinit numa_setup_cpu(unsigned long lcpu)
                goto out;
        }
 
-       nid = of_node_to_nid(cpu);
+       nid = of_node_to_nid_single(cpu);
 
        if (nid < 0 || !node_online(nid))
                nid = any_online_node(NODE_MASK_ALL);
@@ -321,10 +343,7 @@ static int cpu_numa_callback(struct notifier_block *nfb,
 
        switch (action) {
        case CPU_UP_PREPARE:
-               if (min_common_depth == -1 || !numa_enabled)
-                       map_cpu_to_node(lcpu, 0);
-               else
-                       numa_setup_cpu(lcpu);
+               numa_setup_cpu(lcpu);
                ret = NOTIFY_OK;
                break;
 #ifdef CONFIG_HOTPLUG_CPU
@@ -396,7 +415,7 @@ static int __init parse_numa_properties(void)
 
                cpu = find_cpu_node(i);
                BUG_ON(!cpu);
-               nid = of_node_to_nid(cpu);
+               nid = of_node_to_nid_single(cpu);
                of_node_put(cpu);
 
                /*
@@ -440,7 +459,7 @@ new_range:
                 * have associativity properties.  If none, then
                 * everything goes to default_nid.
                 */
-               nid = of_node_to_nid(memory);
+               nid = of_node_to_nid_single(memory);
                if (nid < 0)
                        nid = default_nid;
                node_set_online(nid);
@@ -459,8 +478,6 @@ new_range:
                        goto new_range;
        }
 
-       numa_setup_cpu(boot_cpuid);
-
        return 0;
 }
 
@@ -470,12 +487,11 @@ static void __init setup_nonnuma(void)
        unsigned long total_ram = lmb_phys_mem_size();
        unsigned int i;
 
-       printk(KERN_INFO "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
+       printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
               top_of_ram, total_ram);
-       printk(KERN_INFO "Memory hole size: %ldMB\n",
+       printk(KERN_DEBUG "Memory hole size: %ldMB\n",
               (top_of_ram - total_ram) >> 20);
 
-       map_cpu_to_node(boot_cpuid, 0);
        for (i = 0; i < lmb.memory.cnt; ++i)
                add_region(0, lmb.memory.region[i].base >> PAGE_SHIFT,
                           lmb_size_pages(&lmb.memory, i));
@@ -491,7 +507,7 @@ void __init dump_numa_cpu_topology(void)
                return;
 
        for_each_online_node(node) {
-               printk(KERN_INFO "Node %d CPUs:", node);
+               printk(KERN_DEBUG "Node %d CPUs:", node);
 
                count = 0;
                /*
@@ -527,7 +543,7 @@ static void __init dump_numa_memory_topology(void)
        for_each_online_node(node) {
                unsigned long i;
 
-               printk(KERN_INFO "Node %d Memory:", node);
+               printk(KERN_DEBUG "Node %d Memory:", node);
 
                count = 0;
 
@@ -612,6 +628,8 @@ void __init do_init_bootmem(void)
                dump_numa_memory_topology();
 
        register_cpu_notifier(&ppc64_numa_nb);
+       cpu_numa_callback(&ppc64_numa_nb, CPU_UP_PREPARE,
+                         (void *)(unsigned long)boot_cpuid);
 
        for_each_online_node(nid) {
                unsigned long start_pfn, end_pfn, pages_present;
@@ -760,6 +778,7 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
        struct device_node *memory = NULL;
        nodemask_t nodes;
        int default_nid = any_online_node(NODE_MASK_ALL);
+       int nid;
 
        if (!numa_enabled || (min_common_depth < 0))
                return default_nid;
@@ -779,7 +798,7 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
 ha_new_range:
                start = read_n_cells(n_mem_addr_cells, &memcell_buf);
                size = read_n_cells(n_mem_size_cells, &memcell_buf);
-               nid = of_node_to_nid(memory);
+               nid = of_node_to_nid_single(memory);
 
                /* Domains not present at boot default to 0 */
                if (nid < 0 || !node_online(nid))
@@ -794,6 +813,7 @@ ha_new_range:
                        goto ha_new_range;
        }
        BUG();  /* section address should be found above */
+       return 0;
 
        /* Temporary code to ensure that returned node is not empty */
 got_nid: