From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Since offline_memory_block(mem) is functionally equivalent to
device_offline(&mem->dev), make the only caller of the former use
the latter instead and drop offline_memory_block() entirely.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/base/memory.c | 21 ---------------------
include/linux/memory_hotplug.h | 1 -
mm/memory_hotplug.c | 2 +-
3 files changed, 1 insertion(+), 23 deletions(-)
Index: linux-pm/drivers/base/memory.c
===================================================================
--- linux-pm.orig/drivers/base/memory.c
+++ linux-pm/drivers/base/memory.c
@@ -735,27 +735,6 @@ int unregister_memory_section(struct mem
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
-/*
- * offline one memory block. If the memory block has been offlined, do nothing.
- *
- * Call under device_hotplug_lock.
- */
-int offline_memory_block(struct memory_block *mem)
-{
- int ret = 0;
-
- mutex_lock(&mem->state_mutex);
- if (mem->state != MEM_OFFLINE) {
- ret = __memory_block_change_state_uevent(mem, MEM_OFFLINE,
- MEM_ONLINE, -1);
- if (!ret)
- mem->dev.offline = true;
- }
- mutex_unlock(&mem->state_mutex);
-
- return ret;
-}
-
/* return true if the memory block is offlined, otherwise, return false */
bool is_memblock_offlined(struct memory_block *mem)
{
Index: linux-pm/include/linux/memory_hotplug.h
===================================================================
--- linux-pm.orig/include/linux/memory_hotplug.h
+++ linux-pm/include/linux/memory_hotplug.h
@@ -251,7 +251,6 @@ extern int mem_online_node(int nid);
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
-extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
extern int remove_memory(int nid, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
Index: linux-pm/mm/memory_hotplug.c
===================================================================
--- linux-pm.orig/mm/memory_hotplug.c
+++ linux-pm/mm/memory_hotplug.c
@@ -1680,7 +1680,7 @@ int walk_memory_range(unsigned long star
static int offline_memory_block_cb(struct memory_block *mem, void *arg)
{
int *ret = arg;
- int error = offline_memory_block(mem);
+ int error = device_offline(&mem->dev);
if (error != 0 && *ret == 0)
*ret = error;
--
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