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-rw-r--r--drivers/base/memory.c28
-rw-r--r--include/linux/memory.h2
2 files changed, 20 insertions, 10 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 933442f4032..a7994409b9a 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -468,28 +468,23 @@ static int add_memory_block(int nid, struct mem_section *section,
return ret;
}
-/*
- * For now, we have a linear search to go find the appropriate
- * memory_block corresponding to a particular phys_index. If
- * this gets to be a real problem, we can always use a radix
- * tree or something here.
- *
- * This could be made generic for all sysdev classes.
- */
-struct memory_block *find_memory_block(struct mem_section *section)
+struct memory_block *find_memory_block_hinted(struct mem_section *section,
+ struct memory_block *hint)
{
struct kobject *kobj;
struct sys_device *sysdev;
struct memory_block *mem;
char name[sizeof(MEMORY_CLASS_NAME) + 9 + 1];
+ kobj = hint ? &hint->sysdev.kobj : NULL;
+
/*
* This only works because we know that section == sysdev->id
* slightly redundant with sysdev_register()
*/
sprintf(&name[0], "%s%d", MEMORY_CLASS_NAME, __section_nr(section));
- kobj = kset_find_obj(&memory_sysdev_class.kset, name);
+ kobj = kset_find_obj_hinted(&memory_sysdev_class.kset, name, kobj);
if (!kobj)
return NULL;
@@ -499,6 +494,19 @@ struct memory_block *find_memory_block(struct mem_section *section)
return mem;
}
+/*
+ * For now, we have a linear search to go find the appropriate
+ * memory_block corresponding to a particular phys_index. If
+ * this gets to be a real problem, we can always use a radix
+ * tree or something here.
+ *
+ * This could be made generic for all sysdev classes.
+ */
+struct memory_block *find_memory_block(struct mem_section *section)
+{
+ return find_memory_block_hinted(section, NULL);
+}
+
int remove_memory_block(unsigned long node_id, struct mem_section *section,
int phys_device)
{
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 85582e1bcee..c4f3127dbd4 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -113,6 +113,8 @@ extern int memory_dev_init(void);
extern int remove_memory_block(unsigned long, struct mem_section *, int);
extern int memory_notify(unsigned long val, void *v);
extern int memory_isolate_notify(unsigned long val, void *v);
+extern struct memory_block *find_memory_block_hinted(struct mem_section *,
+ struct memory_block *);
extern struct memory_block *find_memory_block(struct mem_section *);
#define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<<PAGE_SHIFT)
enum mem_add_context { BOOT, HOTPLUG };