Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/base/node.c b/drivers/base/node.c
new file mode 100644
index 0000000..583d57e
--- /dev/null
+++ b/drivers/base/node.c
@@ -0,0 +1,161 @@
+/*
+ * drivers/base/node.c - basic Node class support
+ */
+
+#include <linux/sysdev.h>
+#include <linux/module.h>
+#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"),
+};
+
+
+static ssize_t node_read_cpumap(struct sys_device * dev, char * buf)
+{
+ struct node *node_dev = to_node(dev);
+ cpumask_t mask = node_to_cpumask(node_dev->sysdev.id);
+ int len;
+
+ /* 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);
+
+#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);
+ __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(active),
+ nid, K(inactive),
+ nid, K(i.totalhigh),
+ nid, K(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;
+}
+static SYSDEV_ATTR(distance, S_IRUGO, node_read_distance, NULL);
+
+
+/*
+ * register_node - Setup a driverfs device for a node.
+ * @num - Node number to use when creating the device.
+ *
+ * Initialize and register the node device.
+ */
+int __init register_node(struct node *node, int num, struct node *parent)
+{
+ int error;
+
+ node->sysdev.id = num;
+ node->sysdev.cls = &node_class;
+ error = sysdev_register(&node->sysdev);
+
+ 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;
+}
+
+
+int __init register_node_type(void)
+{
+ return sysdev_class_register(&node_class);
+}
+postcore_initcall(register_node_type);