diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/kernel/e820.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/mm/init.c | 36 |
3 files changed, 37 insertions, 3 deletions
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 9f66ac582a8..ae6534ad816 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -651,6 +651,7 @@ void __init mem_init(void) * Specifically, in the case of x86, we will always add * memory to the highmem for now. */ +#ifdef CONFIG_HOTPLUG_MEMORY #ifndef CONFIG_NEED_MULTIPLE_NODES int add_memory(u64 start, u64 size) { @@ -667,6 +668,7 @@ int remove_memory(u64 start, u64 size) return -EINVAL; } #endif +#endif kmem_cache_t *pgd_cache; kmem_cache_t *pmd_cache; diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c index 293cd71a266..db57d3ff04e 100644 --- a/arch/x86_64/kernel/e820.c +++ b/arch/x86_64/kernel/e820.c @@ -80,7 +80,7 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size) return 0; } -int __init e820_mapped(unsigned long start, unsigned long end, unsigned type) +int __meminit e820_mapped(unsigned long start, unsigned long end, unsigned type) { int i; for (i = 0; i < e820.nr_map; i++) { diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c index e5f7f1c3446..49216116840 100644 --- a/arch/x86_64/mm/init.c +++ b/arch/x86_64/mm/init.c @@ -507,9 +507,8 @@ void __init clear_kernel_mapping(unsigned long address, unsigned long size) /* * Memory hotplug specific functions - * These are only for non-NUMA machines right now. */ -#ifdef CONFIG_MEMORY_HOTPLUG +#if defined(CONFIG_ACPI_HOTPLUG_MEMORY) || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE) void online_page(struct page *page) { @@ -520,6 +519,39 @@ void online_page(struct page *page) num_physpages++; } +#ifndef CONFIG_MEMORY_HOTPLUG +/* + * Memory Hotadd without sparsemem. The mem_maps have been allocated in advance, + * just online the pages. + */ +int __add_pages(struct zone *z, unsigned long start_pfn, unsigned long nr_pages) +{ + int err = -EIO; + unsigned long pfn; + unsigned long total = 0, mem = 0; + for (pfn = start_pfn; pfn < start_pfn + nr_pages; pfn++) { + unsigned long addr = pfn << PAGE_SHIFT; + if (pfn_valid(pfn) && e820_mapped(addr, addr+1, E820_RAM)) { + online_page(pfn_to_page(pfn)); + err = 0; + mem++; + } + total++; + } + if (!err) { + z->spanned_pages += total; + z->present_pages += mem; + z->zone_pgdat->node_spanned_pages += total; + z->zone_pgdat->node_present_pages += mem; + } + return err; +} +#endif + +/* + * Memory is added always to NORMAL zone. This means you will never get + * additional DMA/DMA32 memory. + */ int add_memory(u64 start, u64 size) { struct pglist_data *pgdat = NODE_DATA(0); |