diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/memory.c | 37 | ||||
| -rw-r--r-- | drivers/base/node.c | 11 |
2 files changed, 24 insertions, 24 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 18a30c3ac0ef..826dd76f662e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -759,32 +759,31 @@ int create_memory_block_devices(unsigned long start, unsigned long size) return ret; } -void unregister_memory_section(struct mem_section *section) +/* + * Remove memory block devices for the given memory area. Start and size + * have to be aligned to memory block granularity. Memory block devices + * have to be offline. + */ +void remove_memory_block_devices(unsigned long start, unsigned long size) { + const int start_block_id = pfn_to_block_id(PFN_DOWN(start)); + const int end_block_id = pfn_to_block_id(PFN_DOWN(start + size)); struct memory_block *mem; + int block_id; - if (WARN_ON_ONCE(!present_section(section))) + if (WARN_ON_ONCE(!IS_ALIGNED(start, memory_block_size_bytes()) || + !IS_ALIGNED(size, memory_block_size_bytes()))) return; mutex_lock(&mem_sysfs_mutex); - - /* - * Some users of the memory hotplug do not want/need memblock to - * track all sections. Skip over those. - */ - mem = find_memory_block(section); - if (!mem) - goto out_unlock; - - unregister_mem_sect_under_nodes(mem, __section_nr(section)); - - mem->section_count--; - if (mem->section_count == 0) + for (block_id = start_block_id; block_id != end_block_id; block_id++) { + mem = find_memory_block_by_id(block_id, NULL); + if (WARN_ON_ONCE(!mem)) + continue; + mem->section_count = 0; + unregister_memory_block_under_nodes(mem); unregister_memory(mem); - else - put_device(&mem->dev); - -out_unlock: + } mutex_unlock(&mem_sysfs_mutex); } diff --git a/drivers/base/node.c b/drivers/base/node.c index aa878fbcf705..0b0f38c2c7cd 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -802,9 +802,10 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg) return 0; } -/* unregister memory section under all nodes that it spans */ -int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, - unsigned long phys_index) +/* + * Unregister memory block device under all nodes that it spans. + */ +int unregister_memory_block_under_nodes(struct memory_block *mem_blk) { NODEMASK_ALLOC(nodemask_t, unlinked_nodes, GFP_KERNEL); unsigned long pfn, sect_start_pfn, sect_end_pfn; @@ -817,8 +818,8 @@ int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, return -ENOMEM; nodes_clear(*unlinked_nodes); - sect_start_pfn = section_nr_to_pfn(phys_index); - sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1; + sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr); + sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr); for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) { int nid; |