Merge with /home/shaggy/git/linus-clean/

10 files changed, 179 insertions, 14 deletions

diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index f12898d5307..e99471d3232 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -8,6 +8,7 @@ obj-y			+= power/
 obj-$(CONFIG_FW_LOADER)	+= firmware_class.o
 obj-$(CONFIG_NUMA)	+= node.o
 obj-$(CONFIG_MEMORY_HOTPLUG) += memory.o
+obj-$(CONFIG_SMP)	+= topology.o
 
 ifeq ($(CONFIG_DEBUG_DRIVER),y)
 EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/base/base.h b/drivers/base/base.h
index e3b548d46cf..5735b38582d 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -19,6 +19,10 @@ extern void bus_remove_driver(struct device_driver *);
 extern void driver_detach(struct device_driver * drv);
 extern int driver_probe_device(struct device_driver *, struct device *);
 
+extern void sysdev_shutdown(void);
+extern int sysdev_suspend(pm_message_t state);
+extern int sysdev_resume(void);
+
 static inline struct class_device *to_class_dev(struct kobject *obj)
 {
 	return container_of(obj, struct class_device, kobj);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 29f6af554e7..c3141565d59 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -133,6 +133,8 @@ static struct kobj_type ktype_bus = {
 decl_subsys(bus, &ktype_bus, NULL);
 
 
+#ifdef CONFIG_HOTPLUG
+
 /* Manually detach a device from its associated driver. */
 static int driver_helper(struct device *dev, void *data)
 {
@@ -193,6 +195,7 @@ static ssize_t driver_bind(struct device_driver *drv,
 }
 static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind);
 
+#endif
 
 static struct device * next_device(struct klist_iter * i)
 {
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index d1a05224627..105a0d61eb1 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -303,7 +303,7 @@ static int block_size_init(void)
  */
 #ifdef CONFIG_ARCH_MEMORY_PROBE
 static ssize_t
-memory_probe_store(struct class *class, const char __user *buf, size_t count)
+memory_probe_store(struct class *class, const char *buf, size_t count)
 {
 	u64 phys_addr;
 	int ret;
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
index 0a7aa07b9a2..317edbf0fec 100644
--- a/drivers/base/power/resume.c
+++ b/drivers/base/power/resume.c
@@ -9,10 +9,9 @@
  */
 
 #include <linux/device.h>
+#include "../base.h"
 #include "power.h"
 
-extern int sysdev_resume(void);
-
 
 /**
  *	resume_device - Restore state for one device.
diff --git a/drivers/base/power/shutdown.c b/drivers/base/power/shutdown.c
index c2475f3134e..8826a5b6673 100644
--- a/drivers/base/power/shutdown.c
+++ b/drivers/base/power/shutdown.c
@@ -12,6 +12,7 @@
 #include <linux/device.h>
 #include <asm/semaphore.h>
 
+#include "../base.h"
 #include "power.h"
 
 #define to_dev(node) container_of(node, struct device, kobj.entry)
@@ -28,7 +29,6 @@ extern struct subsystem devices_subsys;
  * they only get one called once when interrupts are disabled.
  */
 
-extern int sysdev_shutdown(void);
 
 /**
  * device_shutdown - call ->shutdown() on each device to shutdown.
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index 50501764d05..8660779fb28 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -9,10 +9,9 @@
  */
 
 #include <linux/device.h>
+#include "../base.h"
 #include "power.h"
 
-extern int sysdev_suspend(pm_message_t state);
-
 /*
  * The entries in the dpm_active list are in a depth first order, simply
  * because children are guaranteed to be discovered after parents, and
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index f3a0c562bcb..40d7242a07c 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -27,22 +27,30 @@
 
 static ssize_t state_show(struct device * dev, struct device_attribute *attr, char * buf)
 {
-	return sprintf(buf, "%u\n", dev->power.power_state.event);
+	if (dev->power.power_state.event)
+		return sprintf(buf, "2\n");
+	else
+		return sprintf(buf, "0\n");
 }
 
 static ssize_t state_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t n)
 {
 	pm_message_t state;
-	char * rest;
-	int error = 0;
+	int error = -EINVAL;
 
-	state.event = simple_strtoul(buf, &rest, 10);
-	if (*rest)
-		return -EINVAL;
-	if (state.event)
+	state.event = PM_EVENT_SUSPEND;
+	/* Older apps expected to write "3" here - confused with PCI D3 */
+	if ((n == 1) && !strcmp(buf, "3"))
 		error = dpm_runtime_suspend(dev, state);
-	else
+
+	if ((n == 1) && !strcmp(buf, "2"))
+		error = dpm_runtime_suspend(dev, state);
+
+	if ((n == 1) && !strcmp(buf, "0")) {
 		dpm_runtime_resume(dev);
+		error = 0;
+	}
+
 	return error ? error : n;
 }
 
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 66ed8f2fece..6fc23ab127b 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -21,8 +21,11 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/pm.h>
+#include <linux/device.h>
 #include <asm/semaphore.h>
 
+#include "base.h"
+
 extern struct subsystem devices_subsys;
 
 #define to_sysdev(k) container_of(k, struct sys_device, kobj)
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
new file mode 100644
index 00000000000..915810f6237
--- /dev/null
+++ b/drivers/base/topology.c
@@ -0,0 +1,148 @@
+/*
+ * driver/base/topology.c - Populate sysfs with cpu topology information
+ *
+ * Written by: Zhang Yanmin, Intel Corporation
+ *
+ * Copyright (C) 2006, Intel Corp.
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#include <linux/sysdev.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
+#include <linux/topology.h>
+
+#define define_one_ro(_name) 		\
+static SYSDEV_ATTR(_name, 0444, show_##_name, NULL)
+
+#define define_id_show_func(name)				\
+static ssize_t show_##name(struct sys_device *dev, char *buf)	\
+{								\
+	unsigned int cpu = dev->id;				\
+	return sprintf(buf, "%d\n", topology_##name(cpu));	\
+}
+
+#define define_siblings_show_func(name)					\
+static ssize_t show_##name(struct sys_device *dev, char *buf)		\
+{									\
+	ssize_t len = -1;						\
+	unsigned int cpu = dev->id;					\
+	len = cpumask_scnprintf(buf, NR_CPUS+1, topology_##name(cpu));	\
+	return (len + sprintf(buf + len, "\n"));			\
+}
+
+#ifdef	topology_physical_package_id
+define_id_show_func(physical_package_id);
+define_one_ro(physical_package_id);
+#define ref_physical_package_id_attr	&attr_physical_package_id.attr,
+#else
+#define ref_physical_package_id_attr
+#endif
+
+#ifdef topology_core_id
+define_id_show_func(core_id);
+define_one_ro(core_id);
+#define ref_core_id_attr		&attr_core_id.attr,
+#else
+#define ref_core_id_attr
+#endif
+
+#ifdef topology_thread_siblings
+define_siblings_show_func(thread_siblings);
+define_one_ro(thread_siblings);
+#define ref_thread_siblings_attr	&attr_thread_siblings.attr,
+#else
+#define ref_thread_siblings_attr
+#endif
+
+#ifdef topology_core_siblings
+define_siblings_show_func(core_siblings);
+define_one_ro(core_siblings);
+#define ref_core_siblings_attr		&attr_core_siblings.attr,
+#else
+#define ref_core_siblings_attr
+#endif
+
+static struct attribute *default_attrs[] = {
+	ref_physical_package_id_attr
+	ref_core_id_attr
+	ref_thread_siblings_attr
+	ref_core_siblings_attr
+	NULL
+};
+
+static struct attribute_group topology_attr_group = {
+	.attrs = default_attrs,
+	.name = "topology"
+};
+
+/* Add/Remove cpu_topology interface for CPU device */
+static int __cpuinit topology_add_dev(struct sys_device * sys_dev)
+{
+	sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
+	return 0;
+}
+
+static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
+{
+	sysfs_remove_group(&sys_dev->kobj, &topology_attr_group);
+	return 0;
+}
+
+static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
+		unsigned long action, void *hcpu)
+{
+	unsigned int cpu = (unsigned long)hcpu;
+	struct sys_device *sys_dev;
+
+	sys_dev = get_cpu_sysdev(cpu);
+	switch (action) {
+	case CPU_ONLINE:
+		topology_add_dev(sys_dev);
+		break;
+	case CPU_DEAD:
+		topology_remove_dev(sys_dev);
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block topology_cpu_notifier =
+{
+	.notifier_call = topology_cpu_callback,
+};
+
+static int __cpuinit topology_sysfs_init(void)
+{
+	int i;
+
+	for_each_online_cpu(i) {
+		topology_cpu_callback(&topology_cpu_notifier, CPU_ONLINE,
+				(void *)(long)i);
+	}
+
+	register_cpu_notifier(&topology_cpu_notifier);
+
+	return 0;
+}
+
+device_initcall(topology_sysfs_init);
+