mm/memory_hotplug: rename all existing 'memhp' into 'mhp'

This renames all 'memhp' instances to 'mhp' except for memhp_default_state
for being a kernel command line option.  This is just a clean up and
should not cause a functional change.  Let's make it consistent rater than
mixing the two prefixes.  In preparation for more users of the 'mhp'
terminology.

Link: https://lkml.kernel.org/r/1611554093-27316-1-git-send-email-anshuman.khandual@arm.comSigned-off-by: NAnshuman Khandual <anshuman.khandual@arm.com>
Suggested-by: NDavid Hildenbrand <david@redhat.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/base/memory.c

@@ -35,7 +35,7 @@ static const char *const online_type_to_str[] = {
 	[MMOP_ONLINE_MOVABLE] = "online_movable",
 };
 
-int memhp_online_type_from_str(const char *str)
+int mhp_online_type_from_str(const char *str)
 {
 	int i;
 
@@ -253,7 +253,7 @@ static int memory_subsys_offline(struct device *dev)
 static ssize_t state_store(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
-	const int online_type = memhp_online_type_from_str(buf);
+	const int online_type = mhp_online_type_from_str(buf);
 	struct memory_block *mem = to_memory_block(dev);
 	int ret;
 
@@ -387,19 +387,19 @@ static ssize_t auto_online_blocks_show(struct device *dev,
 				       struct device_attribute *attr, char *buf)
 {
 	return sysfs_emit(buf, "%s\n",
-			  online_type_to_str[memhp_default_online_type]);
+			  online_type_to_str[mhp_default_online_type]);
 }
 
 static ssize_t auto_online_blocks_store(struct device *dev,
 					struct device_attribute *attr,
 					const char *buf, size_t count)
 {
-	const int online_type = memhp_online_type_from_str(buf);
+	const int online_type = mhp_online_type_from_str(buf);
 
 	if (online_type < 0)
 		return -EINVAL;
 
-	memhp_default_online_type = online_type;
+	mhp_default_online_type = online_type;
 	return count;
 }
 

include/linux/memory_hotplug.h

@@ -116,10 +116,10 @@ extern int arch_add_memory(int nid, u64 start, u64 size,
 			   struct mhp_params *params);
 extern u64 max_mem_size;
 
-extern int memhp_online_type_from_str(const char *str);
+extern int mhp_online_type_from_str(const char *str);
 
 /* Default online_type (MMOP_*) when new memory blocks are added. */
-extern int memhp_default_online_type;
+extern int mhp_default_online_type;
 /* If movable_node boot option specified */
 extern bool movable_node_enabled;
 static inline bool movable_node_is_enabled(void)

mm/memory_hotplug.c

@@ -67,17 +67,17 @@ void put_online_mems(void)
 bool movable_node_enabled = false;
 
 #ifndef CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
-int memhp_default_online_type = MMOP_OFFLINE;
+int mhp_default_online_type = MMOP_OFFLINE;
 #else
-int memhp_default_online_type = MMOP_ONLINE;
+int mhp_default_online_type = MMOP_ONLINE;
 #endif
 
 static int __init setup_memhp_default_state(char *str)
 {
-	const int online_type = memhp_online_type_from_str(str);
+	const int online_type = mhp_online_type_from_str(str);
 
 	if (online_type >= 0)
-		memhp_default_online_type = online_type;
+		mhp_default_online_type = online_type;
 
 	return 1;
 }
@@ -1076,7 +1076,7 @@ static int check_hotplug_memory_range(u64 start, u64 size)
 
 static int online_memory_block(struct memory_block *mem, void *arg)
 {
-	mem->online_type = memhp_default_online_type;
+	mem->online_type = mhp_default_online_type;
 	return device_online(&mem->dev);
 }
 
@@ -1157,7 +1157,7 @@ int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
 		merge_system_ram_resource(res);
 
 	/* online pages if requested */
-	if (memhp_default_online_type != MMOP_OFFLINE)
+	if (mhp_default_online_type != MMOP_OFFLINE)
 		walk_memory_blocks(start, size, NULL, online_memory_block);
 
 	return ret;