xen-balloon: convert sysdev_class to a regular subsystem
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
index 9cc2259..3832e30 100644
--- a/drivers/xen/xen-balloon.c
+++ b/drivers/xen/xen-balloon.c
@@ -32,7 +32,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/sysdev.h>
#include <linux/capability.h>
#include <xen/xen.h>
@@ -46,9 +45,9 @@
#define BALLOON_CLASS_NAME "xen_memory"
-static struct sys_device balloon_sysdev;
+static struct device balloon_dev;
-static int register_balloon(struct sys_device *sysdev);
+static int register_balloon(struct device *dev);
/* React to a change in the target key */
static void watch_target(struct xenbus_watch *watch,
@@ -98,9 +97,9 @@
pr_info("xen-balloon: Initialising balloon driver.\n");
- register_balloon(&balloon_sysdev);
+ register_balloon(&balloon_dev);
- register_xen_selfballooning(&balloon_sysdev);
+ register_xen_selfballooning(&balloon_dev);
register_xenstore_notifier(&xenstore_notifier);
@@ -117,31 +116,31 @@
module_exit(balloon_exit);
#define BALLOON_SHOW(name, format, args...) \
- static ssize_t show_##name(struct sys_device *dev, \
- struct sysdev_attribute *attr, \
+ static ssize_t show_##name(struct device *dev, \
+ struct device_attribute *attr, \
char *buf) \
{ \
return sprintf(buf, format, ##args); \
} \
- static SYSDEV_ATTR(name, S_IRUGO, show_##name, NULL)
+ static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
BALLOON_SHOW(current_kb, "%lu\n", PAGES2KB(balloon_stats.current_pages));
BALLOON_SHOW(low_kb, "%lu\n", PAGES2KB(balloon_stats.balloon_low));
BALLOON_SHOW(high_kb, "%lu\n", PAGES2KB(balloon_stats.balloon_high));
-static SYSDEV_ULONG_ATTR(schedule_delay, 0444, balloon_stats.schedule_delay);
-static SYSDEV_ULONG_ATTR(max_schedule_delay, 0644, balloon_stats.max_schedule_delay);
-static SYSDEV_ULONG_ATTR(retry_count, 0444, balloon_stats.retry_count);
-static SYSDEV_ULONG_ATTR(max_retry_count, 0644, balloon_stats.max_retry_count);
+static DEVICE_ULONG_ATTR(schedule_delay, 0444, balloon_stats.schedule_delay);
+static DEVICE_ULONG_ATTR(max_schedule_delay, 0644, balloon_stats.max_schedule_delay);
+static DEVICE_ULONG_ATTR(retry_count, 0444, balloon_stats.retry_count);
+static DEVICE_ULONG_ATTR(max_retry_count, 0644, balloon_stats.max_retry_count);
-static ssize_t show_target_kb(struct sys_device *dev, struct sysdev_attribute *attr,
+static ssize_t show_target_kb(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%lu\n", PAGES2KB(balloon_stats.target_pages));
}
-static ssize_t store_target_kb(struct sys_device *dev,
- struct sysdev_attribute *attr,
+static ssize_t store_target_kb(struct device *dev,
+ struct device_attribute *attr,
const char *buf,
size_t count)
{
@@ -158,11 +157,11 @@
return count;
}
-static SYSDEV_ATTR(target_kb, S_IRUGO | S_IWUSR,
+static DEVICE_ATTR(target_kb, S_IRUGO | S_IWUSR,
show_target_kb, store_target_kb);
-static ssize_t show_target(struct sys_device *dev, struct sysdev_attribute *attr,
+static ssize_t show_target(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%llu\n",
@@ -170,8 +169,8 @@
<< PAGE_SHIFT);
}
-static ssize_t store_target(struct sys_device *dev,
- struct sysdev_attribute *attr,
+static ssize_t store_target(struct device *dev,
+ struct device_attribute *attr,
const char *buf,
size_t count)
{
@@ -188,23 +187,23 @@
return count;
}
-static SYSDEV_ATTR(target, S_IRUGO | S_IWUSR,
+static DEVICE_ATTR(target, S_IRUGO | S_IWUSR,
show_target, store_target);
-static struct sysdev_attribute *balloon_attrs[] = {
- &attr_target_kb,
- &attr_target,
- &attr_schedule_delay.attr,
- &attr_max_schedule_delay.attr,
- &attr_retry_count.attr,
- &attr_max_retry_count.attr
+static struct device_attribute *balloon_attrs[] = {
+ &dev_attr_target_kb,
+ &dev_attr_target,
+ &dev_attr_schedule_delay.attr,
+ &dev_attr_max_schedule_delay.attr,
+ &dev_attr_retry_count.attr,
+ &dev_attr_max_retry_count.attr
};
static struct attribute *balloon_info_attrs[] = {
- &attr_current_kb.attr,
- &attr_low_kb.attr,
- &attr_high_kb.attr,
+ &dev_attr_current_kb.attr,
+ &dev_attr_low_kb.attr,
+ &dev_attr_high_kb.attr,
NULL
};
@@ -213,34 +212,35 @@
.attrs = balloon_info_attrs
};
-static struct sysdev_class balloon_sysdev_class = {
- .name = BALLOON_CLASS_NAME
+static struct bus_type balloon_subsys = {
+ .name = BALLOON_CLASS_NAME,
+ .dev_name = BALLOON_CLASS_NAME,
};
-static int register_balloon(struct sys_device *sysdev)
+static int register_balloon(struct device *dev)
{
int i, error;
- error = sysdev_class_register(&balloon_sysdev_class);
+ error = bus_register(&balloon_subsys);
if (error)
return error;
- sysdev->id = 0;
- sysdev->cls = &balloon_sysdev_class;
+ dev->id = 0;
+ dev->bus = &balloon_subsys;
- error = sysdev_register(sysdev);
+ error = device_register(dev);
if (error) {
- sysdev_class_unregister(&balloon_sysdev_class);
+ bus_unregister(&balloon_subsys);
return error;
}
for (i = 0; i < ARRAY_SIZE(balloon_attrs); i++) {
- error = sysdev_create_file(sysdev, balloon_attrs[i]);
+ error = device_create_file(dev, balloon_attrs[i]);
if (error)
goto fail;
}
- error = sysfs_create_group(&sysdev->kobj, &balloon_info_group);
+ error = sysfs_create_group(&dev->kobj, &balloon_info_group);
if (error)
goto fail;
@@ -248,9 +248,9 @@
fail:
while (--i >= 0)
- sysdev_remove_file(sysdev, balloon_attrs[i]);
- sysdev_unregister(sysdev);
- sysdev_class_unregister(&balloon_sysdev_class);
+ device_remove_file(dev, balloon_attrs[i]);
+ device_unregister(dev);
+ bus_unregister(&balloon_subsys);
return error;
}