diff options
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/numa.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index ea816c618a7..aa98cb3b59d 100644 --- 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); @@ -393,7 +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); /* @@ -437,7 +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); @@ -776,7 +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)) |