diff options
Diffstat (limited to 'drivers/base/node.c')
| -rw-r--r-- | drivers/base/node.c | 124 |
1 files changed, 81 insertions, 43 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c index c80c3aeed00..d7de1753e09 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"), @@ -39,24 +40,13 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) int n; int nid = dev->id; struct sysinfo i; - struct page_state ps; unsigned long inactive; unsigned long active; unsigned long free; si_meminfo_node(&i, nid); - get_page_state_node(&ps, nid); __get_zone_counts(&active, &inactive, &free, NODE_DATA(nid)); - /* Check for negative values in these approximate counters */ - if ((long)ps.nr_dirty < 0) - ps.nr_dirty = 0; - if ((long)ps.nr_writeback < 0) - ps.nr_writeback = 0; - if ((long)ps.nr_mapped < 0) - ps.nr_mapped = 0; - if ((long)ps.nr_slab < 0) - ps.nr_slab = 0; n = sprintf(buf, "\n" "Node %d MemTotal: %8lu kB\n" @@ -70,7 +60,12 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) "Node %d LowFree: %8lu kB\n" "Node %d Dirty: %8lu kB\n" "Node %d Writeback: %8lu kB\n" + "Node %d FilePages: %8lu kB\n" "Node %d Mapped: %8lu kB\n" + "Node %d AnonPages: %8lu kB\n" + "Node %d PageTables: %8lu kB\n" + "Node %d NFS Unstable: %8lu kB\n" + "Node %d Bounce: %8lu kB\n" "Node %d Slab: %8lu kB\n", nid, K(i.totalram), nid, K(i.freeram), @@ -81,10 +76,15 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) nid, K(i.freehigh), nid, K(i.totalram - i.totalhigh), nid, K(i.freeram - i.freehigh), - nid, K(ps.nr_dirty), - nid, K(ps.nr_writeback), - nid, K(ps.nr_mapped), - nid, K(ps.nr_slab)); + nid, K(node_page_state(nid, NR_FILE_DIRTY)), + nid, K(node_page_state(nid, NR_WRITEBACK)), + nid, K(node_page_state(nid, NR_FILE_PAGES)), + nid, K(node_page_state(nid, NR_FILE_MAPPED)), + nid, K(node_page_state(nid, NR_ANON_PAGES)), + nid, K(node_page_state(nid, NR_PAGETABLE)), + nid, K(node_page_state(nid, NR_UNSTABLE_NFS)), + nid, K(node_page_state(nid, NR_BOUNCE)), + nid, K(node_page_state(nid, NR_SLAB))); n += hugetlb_report_node_meminfo(nid, buf + n); return n; } @@ -94,28 +94,6 @@ static SYSDEV_ATTR(meminfo, S_IRUGO, node_read_meminfo, NULL); static ssize_t node_read_numastat(struct sys_device * dev, char * buf) { - unsigned long numa_hit, numa_miss, interleave_hit, numa_foreign; - unsigned long local_node, other_node; - int i, cpu; - pg_data_t *pg = NODE_DATA(dev->id); - numa_hit = 0; - numa_miss = 0; - interleave_hit = 0; - numa_foreign = 0; - local_node = 0; - other_node = 0; - for (i = 0; i < MAX_NR_ZONES; i++) { - struct zone *z = &pg->node_zones[i]; - for_each_online_cpu(cpu) { - struct per_cpu_pageset *ps = zone_pcp(z,cpu); - numa_hit += ps->numa_hit; - numa_miss += ps->numa_miss; - numa_foreign += ps->numa_foreign; - interleave_hit += ps->interleave_hit; - local_node += ps->local_node; - other_node += ps->other_node; - } - } return sprintf(buf, "numa_hit %lu\n" "numa_miss %lu\n" @@ -123,12 +101,12 @@ static ssize_t node_read_numastat(struct sys_device * dev, char * buf) "interleave_hit %lu\n" "local_node %lu\n" "other_node %lu\n", - numa_hit, - numa_miss, - numa_foreign, - interleave_hit, - local_node, - other_node); + node_page_state(dev->id, NUMA_HIT), + node_page_state(dev->id, NUMA_MISS), + node_page_state(dev->id, NUMA_FOREIGN), + node_page_state(dev->id, NUMA_INTERLEAVE_HIT), + node_page_state(dev->id, NUMA_LOCAL), + node_page_state(dev->id, NUMA_OTHER)); } static SYSDEV_ATTR(numastat, S_IRUGO, node_read_numastat, NULL); @@ -190,6 +168,66 @@ void unregister_node(struct node *node) sysdev_unregister(&node->sysdev); } +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); + struct node *parent = NULL; + + if (p_node != 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; + +} + +void unregister_one_node(int nid) +{ + unregister_node(&node_devices[nid]); +} + static int __init register_node_type(void) { return sysdev_class_register(&node_class); |