From 6c9d290952642873548a78dfa0eecc4c82b9af1d Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Wed, 21 Dec 2011 15:09:51 -0800
Subject: [PATCH] power: cmm - 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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
arch/powerpc/platforms/pseries/cmm.c | 67 ++++++++++++++--------------
1 file changed, 34 insertions(+), 33 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 3cafc306b971..c638535753df 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -33,7 +33,7 @@
#include <linux/sched.h>
#include <linux/stringify.h>
#include <linux/swap.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
#include <asm/firmware.h>
#include <asm/hvcall.h>
#include <asm/mmu.h>
@@ -65,7 +65,7 @@ static unsigned int oom_kb = CMM_OOM_KB;
static unsigned int cmm_debug = CMM_DEBUG;
static unsigned int cmm_disabled = CMM_DISABLE;
static unsigned long min_mem_mb = CMM_MIN_MEM_MB;
-static struct sys_device cmm_sysdev;
+static struct device cmm_dev;
MODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>");
MODULE_DESCRIPTION("IBM System p Collaborative Memory Manager");
@@ -347,25 +347,25 @@ static int cmm_thread(void *dummy)
}
#define CMM_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)
CMM_SHOW(loaned_kb, "%lu\n", PAGES2KB(loaned_pages));
CMM_SHOW(loaned_target_kb, "%lu\n", PAGES2KB(loaned_pages_target));
-static ssize_t show_oom_pages(struct sys_device *dev,
- struct sysdev_attribute *attr, char *buf)
+static ssize_t show_oom_pages(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%lu\n", PAGES2KB(oom_freed_pages));
}
-static ssize_t store_oom_pages(struct sys_device *dev,
- struct sysdev_attribute *attr,
+static ssize_t store_oom_pages(struct device *dev,
+ struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long val = simple_strtoul (buf, NULL, 10);
@@ -379,17 +379,18 @@ static ssize_t store_oom_pages(struct sys_device *dev,
return count;
}
-static SYSDEV_ATTR(oom_freed_kb, S_IWUSR| S_IRUGO,
+static DEVICE_ATTR(oom_freed_kb, S_IWUSR | S_IRUGO,
show_oom_pages, store_oom_pages);
-static struct sysdev_attribute *cmm_attrs[] = {
- &attr_loaned_kb,
- &attr_loaned_target_kb,
- &attr_oom_freed_kb,
+static struct device_attribute *cmm_attrs[] = {
+ &dev_attr_loaned_kb,
+ &dev_attr_loaned_target_kb,
+ &dev_attr_oom_freed_kb,
};
-static struct sysdev_class cmm_sysdev_class = {
+static struct bus_type cmm_subsys = {
.name = "cmm",
+ .dev_name = "cmm",
};
/**
@@ -398,21 +399,21 @@ static struct sysdev_class cmm_sysdev_class = {
* Return value:
* 0 on success / other on failure
**/
-static int cmm_sysfs_register(struct sys_device *sysdev)
+static int cmm_sysfs_register(struct device *dev)
{
int i, rc;
- if ((rc = sysdev_class_register(&cmm_sysdev_class)))
+ if ((rc = subsys_system_register(&cmm_subsys, NULL)))
return rc;
- sysdev->id = 0;
- sysdev->cls = &cmm_sysdev_class;
+ dev->id = 0;
+ dev->bus = &cmm_subsys;
- if ((rc = sysdev_register(sysdev)))
- goto class_unregister;
+ if ((rc = device_register(dev)))
+ goto subsys_unregister;
for (i = 0; i < ARRAY_SIZE(cmm_attrs); i++) {
- if ((rc = sysdev_create_file(sysdev, cmm_attrs[i])))
+ if ((rc = device_create_file(dev, cmm_attrs[i])))
goto fail;
}
@@ -420,10 +421,10 @@ static int cmm_sysfs_register(struct sys_device *sysdev)
fail:
while (--i >= 0)
- sysdev_remove_file(sysdev, cmm_attrs[i]);
- sysdev_unregister(sysdev);
-class_unregister:
- sysdev_class_unregister(&cmm_sysdev_class);
+ device_remove_file(dev, cmm_attrs[i]);
+ device_unregister(dev);
+subsys_unregister:
+ bus_unregister(&cmm_subsys);
return rc;
}
@@ -431,14 +432,14 @@ class_unregister:
* cmm_unregister_sysfs - Unregister from sysfs
*
**/
-static void cmm_unregister_sysfs(struct sys_device *sysdev)
+static void cmm_unregister_sysfs(struct device *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(cmm_attrs); i++)
- sysdev_remove_file(sysdev, cmm_attrs[i]);
- sysdev_unregister(sysdev);
- sysdev_class_unregister(&cmm_sysdev_class);
+ device_remove_file(dev, cmm_attrs[i]);
+ device_unregister(dev);
+ bus_unregister(&cmm_subsys);
}
/**
@@ -657,7 +658,7 @@ static int cmm_init(void)
if ((rc = register_reboot_notifier(&cmm_reboot_nb)))
goto out_oom_notifier;
- if ((rc = cmm_sysfs_register(&cmm_sysdev)))
+ if ((rc = cmm_sysfs_register(&cmm_dev)))
goto out_reboot_notifier;
if (register_memory_notifier(&cmm_mem_nb) ||
@@ -678,7 +679,7 @@ static int cmm_init(void)
out_unregister_notifier:
unregister_memory_notifier(&cmm_mem_nb);
unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
- cmm_unregister_sysfs(&cmm_sysdev);
+ cmm_unregister_sysfs(&cmm_dev);
out_reboot_notifier:
unregister_reboot_notifier(&cmm_reboot_nb);
out_oom_notifier:
@@ -701,7 +702,7 @@ static void cmm_exit(void)
unregister_memory_notifier(&cmm_mem_nb);
unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
cmm_free_pages(loaned_pages);
- cmm_unregister_sysfs(&cmm_sysdev);
+ cmm_unregister_sysfs(&cmm_dev);
}
/**
--
2.34.1