diff options
| -rw-r--r-- | arch/powerpc/kernel/sysfs.c | 18 | ||||
| -rw-r--r-- | arch/powerpc/mm/numa.c | 32 | ||||
| -rw-r--r-- | include/asm-powerpc/topology.h | 24 |
3 files changed, 69 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index ed737cacf92..5bc2585c803 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -322,13 +322,31 @@ static void register_nodes(void) } } } + +int sysfs_add_device_to_node(struct sys_device *dev, int nid) +{ + struct node *node = &node_devices[nid]; + return sysfs_create_link(&node->sysdev.kobj, &dev->kobj, + kobject_name(&dev->kobj)); +} + +void sysfs_remove_device_from_node(struct sys_device *dev, int nid) +{ + struct node *node = &node_devices[nid]; + sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj)); +} + #else static void register_nodes(void) { return; } + #endif +EXPORT_SYMBOL_GPL(sysfs_add_device_to_node); +EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node); + /* Only valid if CPU is present. */ static ssize_t show_physical_id(struct sys_device *dev, char *buf) { diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 0a335f34974..092355f3739 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)) diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h index 1e19cd00af2..87362a05542 100644 --- a/include/asm-powerpc/topology.h +++ b/include/asm-powerpc/topology.h @@ -4,6 +4,9 @@ #include <linux/config.h> +struct sys_device; +struct device_node; + #ifdef CONFIG_NUMA #include <asm/mmzone.h> @@ -27,6 +30,8 @@ static inline int node_to_first_cpu(int node) return first_cpu(tmp); } +int of_node_to_nid(struct device_node *device); + #define pcibus_to_node(node) (-1) #define pcibus_to_cpumask(bus) (cpu_online_map) @@ -57,10 +62,29 @@ static inline int node_to_first_cpu(int node) 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); + #else +static inline int of_node_to_nid(struct device_node *device) +{ + return 0; +} + static inline void dump_numa_cpu_topology(void) {} +static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid) +{ + return 0; +} + +static inline void sysfs_remove_device_from_node(struct sys_device *dev, + int nid) +{ +} + + #include <asm-generic/topology.h> #endif /* CONFIG_NUMA */ |