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authorDavid Hildenbrand <david@redhat.com>2022-03-22 14:47:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-22 15:57:10 -0700
commit2aa065f7afb28aabb475cc27f24cb18c5141173d (patch)
tree54114950e9c410549af37c2a0f69cc3333e806ac /drivers
parent395f6081bad49f9c54abafebab49ee23aa985bbd (diff)
downloadlinux-2aa065f7afb28aabb475cc27f24cb18c5141173d.tar.bz2
drivers/base/memory: clarify adding and removing of memory blocks
Let's make it clearer at which places we actually add and remove memory blocks -- streamlining the terminology -- and highlight which memory block start out online and which start out as offline. * rename add_memory_block -> add_boot_memory_block * rename init_memory_block -> add_memory_block * rename unregister_memory -> remove_memory_block * rename register_memory -> __add_memory_block * add add_hotplug_memory_block * mark add_boot_memory_block with __init (suggested by Oscar) __add_memory_block() is a pure helper for add_memory_block(), remove the somewhat obvious comment. Link: https://lkml.kernel.org/r/20220221154531.11382-1-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/memory.c38
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index f75e3467cb59..7222ff9b5e05 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -619,11 +619,7 @@ static const struct attribute_group *memory_memblk_attr_groups[] = {
NULL,
};
-/*
- * register_memory - Setup a sysfs device for a memory block
- */
-static
-int register_memory(struct memory_block *memory)
+static int __add_memory_block(struct memory_block *memory)
{
int ret;
@@ -723,9 +719,9 @@ void memory_block_add_nid(struct memory_block *mem, int nid,
}
#endif
-static int init_memory_block(unsigned long block_id, unsigned long state,
- unsigned long nr_vmemmap_pages,
- struct memory_group *group)
+static int add_memory_block(unsigned long block_id, unsigned long state,
+ unsigned long nr_vmemmap_pages,
+ struct memory_group *group)
{
struct memory_block *mem;
int ret = 0;
@@ -756,7 +752,7 @@ static int init_memory_block(unsigned long block_id, unsigned long state,
mem->zone = early_node_zone_for_memory_block(mem, NUMA_NO_NODE);
#endif /* CONFIG_NUMA */
- ret = register_memory(mem);
+ ret = __add_memory_block(mem);
if (ret)
return ret;
@@ -768,7 +764,7 @@ static int init_memory_block(unsigned long block_id, unsigned long state,
return 0;
}
-static int add_memory_block(unsigned long base_section_nr)
+static int __init add_boot_memory_block(unsigned long base_section_nr)
{
int section_count = 0;
unsigned long nr;
@@ -780,11 +776,18 @@ static int add_memory_block(unsigned long base_section_nr)
if (section_count == 0)
return 0;
- return init_memory_block(memory_block_id(base_section_nr),
- MEM_ONLINE, 0, NULL);
+ return add_memory_block(memory_block_id(base_section_nr),
+ MEM_ONLINE, 0, NULL);
+}
+
+static int add_hotplug_memory_block(unsigned long block_id,
+ unsigned long nr_vmemmap_pages,
+ struct memory_group *group)
+{
+ return add_memory_block(block_id, MEM_OFFLINE, nr_vmemmap_pages, group);
}
-static void unregister_memory(struct memory_block *memory)
+static void remove_memory_block(struct memory_block *memory)
{
if (WARN_ON_ONCE(memory->dev.bus != &memory_subsys))
return;
@@ -823,8 +826,7 @@ int create_memory_block_devices(unsigned long start, unsigned long size,
return -EINVAL;
for (block_id = start_block_id; block_id != end_block_id; block_id++) {
- ret = init_memory_block(block_id, MEM_OFFLINE, vmemmap_pages,
- group);
+ ret = add_hotplug_memory_block(block_id, vmemmap_pages, group);
if (ret)
break;
}
@@ -835,7 +837,7 @@ int create_memory_block_devices(unsigned long start, unsigned long size,
mem = find_memory_block_by_id(block_id);
if (WARN_ON_ONCE(!mem))
continue;
- unregister_memory(mem);
+ remove_memory_block(mem);
}
}
return ret;
@@ -864,7 +866,7 @@ void remove_memory_block_devices(unsigned long start, unsigned long size)
if (WARN_ON_ONCE(!mem))
continue;
unregister_memory_block_under_nodes(mem);
- unregister_memory(mem);
+ remove_memory_block(mem);
}
}
@@ -924,7 +926,7 @@ void __init memory_dev_init(void)
*/
for (nr = 0; nr <= __highest_present_section_nr;
nr += sections_per_block) {
- ret = add_memory_block(nr);
+ ret = add_boot_memory_block(nr);
if (ret)
panic("%s() failed to add memory block: %d\n", __func__,
ret);