vserver 1.9.5.x5

[linux-2.6.git] / drivers / base / node.c

diff --git a/drivers/base/node.c b/drivers/base/node.c
index a35701c..583d57e 100644 (file)
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -7,8 +7,10 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/node.h>
+#include <linux/hugetlb.h>
 #include <linux/cpumask.h>
 #include <linux/topology.h>
+#include <linux/nodemask.h>
 
 static struct sysdev_class node_class = {
        set_kset_name("node"),
@@ -18,42 +20,114 @@ static struct sysdev_class node_class = {
 static ssize_t node_read_cpumap(struct sys_device * dev, char * buf)
 {
        struct node *node_dev = to_node(dev);
-       cpumask_t mask = node_dev->cpumap;
+       cpumask_t mask = node_to_cpumask(node_dev->sysdev.id);
        int len;
 
-       /* FIXME - someone should pass us a buffer size (count) or
-        * use seq_file or something to avoid buffer overrun risk. */
-       len = cpumask_scnprintf(buf, 99 /* XXX FIXME */, mask);
+       /* 2004/06/03: buf currently PAGE_SIZE, need > 1 char per 4 bits. */
+       BUILD_BUG_ON(MAX_NUMNODES/4 > PAGE_SIZE/2);
+
+       len = cpumask_scnprintf(buf, PAGE_SIZE-1, mask);
        len += sprintf(buf + len, "\n");
        return len;
 }
 
-static SYSDEV_ATTR(cpumap,S_IRUGO,node_read_cpumap,NULL);
+static SYSDEV_ATTR(cpumap, S_IRUGO, node_read_cpumap, NULL);
 
 #define K(x) ((x) << (PAGE_SHIFT - 10))
 static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
 {
+       int n;
        int nid = dev->id;
        struct sysinfo i;
+       unsigned long inactive;
+       unsigned long active;
+       unsigned long free;
+
        si_meminfo_node(&i, nid);
-       return sprintf(buf, "\n"
+       __get_zone_counts(&active, &inactive, &free, NODE_DATA(nid));
+
+       n = sprintf(buf, "\n"
                       "Node %d MemTotal:     %8lu kB\n"
                       "Node %d MemFree:      %8lu kB\n"
                       "Node %d MemUsed:      %8lu kB\n"
+                      "Node %d Active:       %8lu kB\n"
+                      "Node %d Inactive:     %8lu kB\n"
                       "Node %d HighTotal:    %8lu kB\n"
                       "Node %d HighFree:     %8lu kB\n"
                       "Node %d LowTotal:     %8lu kB\n"
                       "Node %d LowFree:      %8lu kB\n",
                       nid, K(i.totalram),
                       nid, K(i.freeram),
-                      nid, K(i.totalram-i.freeram),
+                      nid, K(i.totalram - i.freeram),
+                      nid, K(active),
+                      nid, K(inactive),
                       nid, K(i.totalhigh),
                       nid, K(i.freehigh),
-                      nid, K(i.totalram-i.totalhigh),
-                      nid, K(i.freeram-i.freehigh));
+                      nid, K(i.totalram - i.totalhigh),
+                      nid, K(i.freeram - i.freehigh));
+       n += hugetlb_report_node_meminfo(nid, buf + n);
+       return n;
+}
+
+#undef K
+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 (cpu = 0; cpu < NR_CPUS; cpu++) {
+                       struct per_cpu_pageset *ps = &z->pageset[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"
+                      "numa_foreign %lu\n"
+                      "interleave_hit %lu\n"
+                      "local_node %lu\n"
+                      "other_node %lu\n",
+                      numa_hit,
+                      numa_miss,
+                      numa_foreign,
+                      interleave_hit,
+                      local_node,
+                      other_node);
+}
+static SYSDEV_ATTR(numastat, S_IRUGO, node_read_numastat, NULL);
+
+static ssize_t node_read_distance(struct sys_device * dev, char * buf)
+{
+       int nid = dev->id;
+       int len = 0;
+       int i;
+
+       /* buf currently PAGE_SIZE, need ~4 chars per node */
+       BUILD_BUG_ON(MAX_NUMNODES*4 > PAGE_SIZE/2);
+
+       for_each_online_node(i)
+               len += sprintf(buf + len, "%s%d", i ? " " : "", node_distance(nid, i));
+
+       len += sprintf(buf + len, "\n");
+       return len;
 }
-#undef K 
-static SYSDEV_ATTR(meminfo,S_IRUGO,node_read_meminfo,NULL);
+static SYSDEV_ATTR(distance, S_IRUGO, node_read_distance, NULL);
 
 
 /*
@@ -66,7 +140,6 @@ int __init register_node(struct node *node, int num, struct node *parent)
 {
        int error;
 
-       node->cpumap = node_to_cpumask(num);
        node->sysdev.id = num;
        node->sysdev.cls = &node_class;
        error = sysdev_register(&node->sysdev);
@@ -74,6 +147,8 @@ int __init register_node(struct node *node, int num, struct node *parent)
        if (!error){
                sysdev_create_file(&node->sysdev, &attr_cpumap);
                sysdev_create_file(&node->sysdev, &attr_meminfo);
+               sysdev_create_file(&node->sysdev, &attr_numastat);
+               sysdev_create_file(&node->sysdev, &attr_distance);
        }
        return error;
 }