From 1681b8e1588f9119899e422181f728b197b1fe34 Mon Sep 17 00:00:00 2001 From: Yasunori Goto Date: Sat, 7 Jan 2006 11:50:38 +0900 Subject: [PATCH] [IA64] Simple memory hot-add for ia64. First step to memory hotplug for ia64 (add only, all new memory is added to node 0, does not use ZONE_EASY_RECLAIM yet). Signed-off-by: Yasunori Goto Signed-off-by: Tony Luck --- arch/ia64/mm/init.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index e3215ba64ffd..b38b6d213c15 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -635,3 +635,39 @@ mem_init (void) ia32_mem_init(); #endif } + +#ifdef CONFIG_MEMORY_HOTPLUG +void online_page(struct page *page) +{ + ClearPageReserved(page); + set_page_count(page, 1); + __free_page(page); + totalram_pages++; + num_physpages++; +} + +int add_memory(u64 start, u64 size) +{ + pg_data_t *pgdat; + struct zone *zone; + unsigned long start_pfn = start >> PAGE_SHIFT; + unsigned long nr_pages = size >> PAGE_SHIFT; + int ret; + + pgdat = NODE_DATA(0); + + zone = pgdat->node_zones + ZONE_NORMAL; + ret = __add_pages(zone, start_pfn, nr_pages); + + if (ret) + printk("%s: Problem encountered in __add_pages() as ret=%d\n", + __FUNCTION__, ret); + + return ret; +} + +int remove_memory(u64 start, u64 size) +{ + return -EINVAL; +} +#endif -- 2.30.2