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| author |   Gu Zheng <guz.fnst@cn.fujitsu.com> | 2013-08-28 14:38:27 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-28 15:47:38 -0700 |
| commit | 7315f0ccfc283ae998ca4d8102de83bba21936fa (patch) | |
| tree | 7eb979ea97f74792da676b47bc59dd21c9ce66f3 /drivers/base | |
| parent | dynamic debug: line queries failing due to uninitialized local variable (diff) | |
| download | linux-dev-7315f0ccfc283ae998ca4d8102de83bba21936fa.tar.xz linux-dev-7315f0ccfc283ae998ca4d8102de83bba21936fa.zip | |
drivers/base/memory.c: introduce help macro to_memory_block
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>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/memory.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 2a38cd2da2e5..69e09a1b62a4 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -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); } /* |