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!

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);