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drivers/base/memory.c: introduce help macro to_memory_block

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Introduce help macro to_memory_block to hide the conversion(device-->memory_block),
just clean up.

Reviewed-by: Yasuaki Ishimatsu  <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gu Zheng 2013-08-28 14:38:27 +08:00 committed by Greg Kroah-Hartman
parent bd8c154a62
commit 7315f0ccfc
1 changed files with 12 additions and 17 deletions
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29
drivers/base/memory.c
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@ -29,6 +29,8 @@ static DEFINE_MUTEX(mem_sysfs_mutex);
#define MEMORY_CLASS_NAME "memory"
#define to_memory_block(dev) container_of(dev, struct memory_block, dev)
static int sections_per_block;
static inline int base_memory_block_id(int section_nr)
@ -76,7 +78,7 @@ EXPORT_SYMBOL(unregister_memory_isolate_notifier);
static void memory_block_release(struct device *dev)
{
struct memory_block *mem = container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
kfree(mem);
}
@ -109,8 +111,7 @@ static unsigned long get_memory_block_size(void)
static ssize_t show_mem_start_phys_index(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
unsigned long phys_index;
phys_index = mem->start_section_nr / sections_per_block;
@ -120,8 +121,7 @@ static ssize_t show_mem_start_phys_index(struct device *dev,
static ssize_t show_mem_end_phys_index(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
unsigned long phys_index;
phys_index = mem->end_section_nr / sections_per_block;
@ -136,8 +136,7 @@ static ssize_t show_mem_removable(struct device *dev,
{
unsigned long i, pfn;
int ret = 1;
struct memory_block *mem =
container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
for (i = 0; i < sections_per_block; i++) {
pfn = section_nr_to_pfn(mem->start_section_nr + i);
@ -153,8 +152,7 @@ static ssize_t show_mem_removable(struct device *dev,
static ssize_t show_mem_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
ssize_t len = 0;
/*
@ -282,7 +280,7 @@ static int memory_block_change_state(struct memory_block *mem,
/* The device lock serializes operations on memory_subsys_[online|offline] */
static int memory_subsys_online(struct device *dev)
{
struct memory_block *mem = container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
int ret;
if (mem->state == MEM_ONLINE)
@ -306,7 +304,7 @@ static int memory_subsys_online(struct device *dev)
static int memory_subsys_offline(struct device *dev)
{
struct memory_block *mem = container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
if (mem->state == MEM_OFFLINE)
return 0;
@ -318,11 +316,9 @@ static ssize_t
store_mem_state(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct memory_block *mem;
struct memory_block *mem = to_memory_block(dev);
int ret, online_type;
mem = container_of(dev, struct memory_block, dev);
lock_device_hotplug();
if (!strncmp(buf, "online_kernel", min_t(int, count, 13)))
@ -376,8 +372,7 @@ store_mem_state(struct device *dev,
static ssize_t show_phys_device(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct memory_block *mem =
container_of(dev, struct memory_block, dev);
struct memory_block *mem = to_memory_block(dev);
return sprintf(buf, "%d\n", mem->phys_device);
}
@ -509,7 +504,7 @@ struct memory_block *find_memory_block_hinted(struct mem_section *section,
put_device(&hint->dev);
if (!dev)
return NULL;
return container_of(dev, struct memory_block, dev);
return to_memory_block(dev);
}
/*