diff options
| -rw-r--r-- | arch/i386/kernel/topology.c | 9 | ||||
| -rw-r--r-- | arch/ia64/kernel/topology.c | 15 | ||||
| -rw-r--r-- | arch/powerpc/kernel/sysfs.c | 15 | ||||
| -rw-r--r-- | drivers/base/node.c | 25 | ||||
| -rw-r--r-- | include/asm-i386/cpu.h | 2 | ||||
| -rw-r--r-- | include/asm-i386/node.h | 29 | ||||
| -rw-r--r-- | include/linux/node.h | 4 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 12 |
8 files changed, 48 insertions, 63 deletions
diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c index 2963552..1eecc2e 100644 --- a/arch/i386/kernel/topology.c +++ b/arch/i386/kernel/topology.c @@ -38,7 +38,7 @@ int arch_register_cpu(int num){ #ifdef CONFIG_NUMA int node = cpu_to_node(num); if (node_online(node)) - parent = &node_devices[node].node; + parent = &node_devices[parent_node(node)]; #endif /* CONFIG_NUMA */ /* @@ -61,7 +61,7 @@ void arch_unregister_cpu(int num) { #ifdef CONFIG_NUMA int node = cpu_to_node(num); if (node_online(node)) - parent = &node_devices[node].node; + parent = &node_devices[parent_node(node)]; #endif /* CONFIG_NUMA */ return unregister_cpu(&cpu_devices[num].cpu, parent); @@ -74,16 +74,13 @@ EXPORT_SYMBOL(arch_unregister_cpu); #ifdef CONFIG_NUMA #include <linux/mmzone.h> -#include <asm/node.h> - -struct i386_node node_devices[MAX_NUMNODES]; static int __init topology_init(void) { int i; for_each_online_node(i) - arch_register_node(i); + register_one_node(i); for_each_present_cpu(i) arch_register_cpu(i); diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index 879edb5..42cb05b 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -26,9 +26,6 @@ #include <asm/numa.h> #include <asm/cpu.h> -#ifdef CONFIG_NUMA -static struct node *sysfs_nodes; -#endif static struct ia64_cpu *sysfs_cpus; int arch_register_cpu(int num) @@ -36,7 +33,7 @@ int arch_register_cpu(int num) struct node *parent = NULL; #ifdef CONFIG_NUMA - parent = &sysfs_nodes[cpu_to_node(num)]; + parent = &node_devices[cpu_to_node(num)]; #endif /* CONFIG_NUMA */ #if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU) @@ -59,7 +56,7 @@ void arch_unregister_cpu(int num) #ifdef CONFIG_NUMA int node = cpu_to_node(num); - parent = &sysfs_nodes[node]; + parent = &node_devices[node]; #endif /* CONFIG_NUMA */ return unregister_cpu(&sysfs_cpus[num].cpu, parent); @@ -74,17 +71,11 @@ static int __init topology_init(void) int i, err = 0; #ifdef CONFIG_NUMA - sysfs_nodes = kzalloc(sizeof(struct node) * MAX_NUMNODES, GFP_KERNEL); - if (!sysfs_nodes) { - err = -ENOMEM; - goto out; - } - /* * MCD - Do we want to register all ONLINE nodes, or all POSSIBLE nodes? */ for_each_online_node(i) { - if ((err = register_node(&sysfs_nodes[i], i, 0))) + if ((err = register_one_node(i))) goto out; } #endif diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 5bc2585..338491d 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -304,23 +304,12 @@ static struct notifier_block sysfs_cpu_nb = { /* NUMA stuff */ #ifdef CONFIG_NUMA -static struct node node_devices[MAX_NUMNODES]; - static void register_nodes(void) { int i; - for (i = 0; i < MAX_NUMNODES; i++) { - if (node_online(i)) { - int p_node = parent_node(i); - struct node *parent = NULL; - - if (p_node != i) - parent = &node_devices[p_node]; - - register_node(&node_devices[i], i, parent); - } - } + for (i = 0; i < MAX_NUMNODES; i++) + register_one_node(i); } int sysfs_add_device_to_node(struct sys_device *dev, int nid) diff --git a/drivers/base/node.c b/drivers/base/node.c index c80c3ae..cbd0f62 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -190,6 +190,31 @@ void unregister_node(struct node *node) sysdev_unregister(&node->sysdev); } +struct node node_devices[MAX_NUMNODES]; + +int register_one_node(int nid) +{ + int error = 0; + + if (node_online(nid)) { + int p_node = parent_node(nid); + struct node *parent = NULL; + + if (p_node != nid) + parent = &node_devices[p_node]; + + error = register_node(&node_devices[nid], nid, parent); + } + + return error; + +} + +void unregister_one_node(int nid) +{ + unregister_node(&node_devices[nid]); +} + static int __init register_node_type(void) { return sysdev_class_register(&node_class); diff --git a/include/asm-i386/cpu.h b/include/asm-i386/cpu.h index e7252c2..b1bc7b1 100644 --- a/include/asm-i386/cpu.h +++ b/include/asm-i386/cpu.h @@ -7,8 +7,6 @@ #include <linux/nodemask.h> #include <linux/percpu.h> -#include <asm/node.h> - struct i386_cpu { struct cpu cpu; }; diff --git a/include/asm-i386/node.h b/include/asm-i386/node.h deleted file mode 100644 index e13c6ff..0000000 --- a/include/asm-i386/node.h +++ /dev/null @@ -1,29 +0,0 @@ -#ifndef _ASM_I386_NODE_H_ -#define _ASM_I386_NODE_H_ - -#include <linux/device.h> -#include <linux/mmzone.h> -#include <linux/node.h> -#include <linux/topology.h> -#include <linux/nodemask.h> - -struct i386_node { - struct node node; -}; -extern struct i386_node node_devices[MAX_NUMNODES]; - -static inline int arch_register_node(int num){ - int p_node; - struct node *parent = NULL; - - if (!node_online(num)) - return 0; - p_node = parent_node(num); - - if (p_node != num) - parent = &node_devices[p_node].node; - - return register_node(&node_devices[num].node, num, parent); -} - -#endif /* _ASM_I386_NODE_H_ */ diff --git a/include/linux/node.h b/include/linux/node.h index 254dc3d..1e53475 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -26,8 +26,12 @@ struct node { struct sys_device sysdev; }; +extern struct node node_devices[]; + extern int register_node(struct node *, int, struct node *); extern void unregister_node(struct node *node); +extern int register_one_node(int nid); +extern void unregister_one_node(int nid); #define to_node(sys_device) container_of(sys_device, struct node, sysdev) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index f13783e..ea40388 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -256,9 +256,19 @@ int add_memory(int nid, u64 start, u64 size) if (ret < 0) goto error; - /* we online node here. we have no error path from here. */ + /* we online node here. we can't roll back from here. */ node_set_online(nid); + if (new_pgdat) { + ret = register_one_node(nid); + /* + * If sysfs file of new node can't create, cpu on the node + * can't be hot-added. There is no rollback way now. + * So, check by BUG_ON() to catch it reluctantly.. + */ + BUG_ON(ret); + } + /* register this memory as resource */ register_memory_resource(start, size); |