merge linus into release branch

Conflicts:

	drivers/acpi/acpi_memhotplug.c

5 files changed, 84 insertions, 16 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index dd712b24ec91..4bef76a2f3f2 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -8,6 +8,7 @@
 #include <linux/cpu.h>
 #include <linux/topology.h>
 #include <linux/device.h>
+#include <linux/node.h>
 
 #include "base.h"
 
@@ -57,13 +58,12 @@ static void __devinit register_cpu_control(struct cpu *cpu)
 {
 	sysdev_create_file(&cpu->sysdev, &attr_online);
 }
-void unregister_cpu(struct cpu *cpu, struct node *root)
+void unregister_cpu(struct cpu *cpu)
 {
 	int logical_cpu = cpu->sysdev.id;
 
-	if (root)
-		sysfs_remove_link(&root->sysdev.kobj,
-				  kobject_name(&cpu->sysdev.kobj));
+	unregister_cpu_under_node(logical_cpu, cpu_to_node(logical_cpu));
+
 	sysdev_remove_file(&cpu->sysdev, &attr_online);
 
 	sysdev_unregister(&cpu->sysdev);
@@ -109,23 +109,21 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
  *
  * Initialize and register the CPU device.
  */
-int __devinit register_cpu(struct cpu *cpu, int num, struct node *root)
+int __devinit register_cpu(struct cpu *cpu, int num)
 {
 	int error;
-
 	cpu->node_id = cpu_to_node(num);
 	cpu->sysdev.id = num;
 	cpu->sysdev.cls = &cpu_sysdev_class;
 
 	error = sysdev_register(&cpu->sysdev);
-	if (!error && root)
-		error = sysfs_create_link(&root->sysdev.kobj,
-					  &cpu->sysdev.kobj,
-					  kobject_name(&cpu->sysdev.kobj));
+
 	if (!error && !cpu->no_control)
 		register_cpu_control(cpu);
 	if (!error)
 		cpu_sys_devices[num] = &cpu->sysdev;
+	if (!error)
+		register_cpu_under_node(num, cpu_to_node(num));
 
 #ifdef CONFIG_KEXEC
 	if (!error)
@@ -145,5 +143,13 @@ EXPORT_SYMBOL_GPL(get_cpu_sysdev);
 
 int __init cpu_dev_init(void)
 {
-	return sysdev_class_register(&cpu_sysdev_class);
+	int err;
+
+	err = sysdev_class_register(&cpu_sysdev_class);
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+	if (!err)
+		err = sched_create_sysfs_power_savings_entries(&cpu_sysdev_class);
+#endif
+
+	return err;
 }
diff --git a/drivers/base/dmapool.c b/drivers/base/dmapool.c
index e2f64f91ed05..33c5cce1560b 100644
--- a/drivers/base/dmapool.c
+++ b/drivers/base/dmapool.c
@@ -7,6 +7,7 @@
 #include <linux/dmapool.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/poison.h>
 
 /*
  * Pool allocator ... wraps the dma_alloc_coherent page allocator, so
@@ -35,8 +36,6 @@ struct dma_page {	/* cacheable header for 'allocation' bytes */
 };
 
 #define	POOL_TIMEOUT_JIFFIES	((100 /* msec */ * HZ) / 1000)
-#define	POOL_POISON_FREED	0xa7	/* !inuse */
-#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */
 
 static DECLARE_MUTEX (pools_lock);
 
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index dd547af4681a..c6b7d9c4b651 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -306,11 +306,13 @@ static ssize_t
 memory_probe_store(struct class *class, const char *buf, size_t count)
 {
 	u64 phys_addr;
+	int nid;
 	int ret;
 
 	phys_addr = simple_strtoull(buf, NULL, 0);
 
-	ret = add_memory(phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
+	nid = memory_add_physaddr_to_nid(phys_addr);
+	ret = add_memory(nid, phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
 
 	if (ret)
 		count = ret;
diff --git a/drivers/base/node.c b/drivers/base/node.c
index c80c3aeed004..eae2bdc183bb 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"),
@@ -190,6 +191,66 @@ 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);
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 8c52421cbc54..c2d621632383 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -107,7 +107,7 @@ static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
 	return 0;
 }
 
-static int topology_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
 		unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
@@ -125,7 +125,7 @@ static int topology_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block topology_cpu_notifier =
+static struct notifier_block __cpuinitdata topology_cpu_notifier =
 {
 	.notifier_call = topology_cpu_callback,
 };