diff options
Diffstat (limited to 'drivers/base/node.c')
| -rw-r--r-- | drivers/base/node.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c index cbd0f62b487..eae2bdc183b 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -11,6 +11,7 @@ #include <linux/cpumask.h> #include <linux/topology.h> #include <linux/nodemask.h> +#include <linux/cpu.h> static struct sysdev_class node_class = { set_kset_name("node"), @@ -192,9 +193,38 @@ void unregister_node(struct node *node) struct node node_devices[MAX_NUMNODES]; +/* + * register cpu under node + */ +int register_cpu_under_node(unsigned int cpu, unsigned int nid) +{ + if (node_online(nid)) { + struct sys_device *obj = get_cpu_sysdev(cpu); + if (!obj) + return 0; + return sysfs_create_link(&node_devices[nid].sysdev.kobj, + &obj->kobj, + kobject_name(&obj->kobj)); + } + + return 0; +} + +int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) +{ + if (node_online(nid)) { + struct sys_device *obj = get_cpu_sysdev(cpu); + if (obj) + sysfs_remove_link(&node_devices[nid].sysdev.kobj, + kobject_name(&obj->kobj)); + } + return 0; +} + int register_one_node(int nid) { int error = 0; + int cpu; if (node_online(nid)) { int p_node = parent_node(nid); @@ -204,6 +234,12 @@ int register_one_node(int nid) parent = &node_devices[p_node]; error = register_node(&node_devices[nid], nid, parent); + + /* link cpu under this node */ + for_each_present_cpu(cpu) { + if (cpu_to_node(cpu) == nid) + register_cpu_under_node(cpu, nid); + } } return error; |