mm, tile: drop arch_{add,remove}_memory
these functions are unreachable because tile doesn't support memory hotplug becasuse it doesn't select ARCH_ENABLE_MEMORY_HOTPLUG nor it supports SPARSEMEM. This code hasn't been compiled for a while obviously because nobody has noticed that __add_pages has a different signature since 2009. Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
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@ -857,36 +857,6 @@ void __init mem_init(void)
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#endif
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}
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/*
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* this is for the non-NUMA, single node SMP system case.
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* Specifically, in the case of x86, we will always add
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* memory to the highmem for now.
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*/
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#ifndef CONFIG_NEED_MULTIPLE_NODES
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int arch_add_memory(u64 start, u64 size, bool for_device)
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{
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struct pglist_data *pgdata = &contig_page_data;
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struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;
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unsigned long start_pfn = start >> PAGE_SHIFT;
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unsigned long nr_pages = size >> PAGE_SHIFT;
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return __add_pages(zone, start_pfn, nr_pages);
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}
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int remove_memory(u64 start, u64 size)
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{
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return -EINVAL;
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}
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#ifdef CONFIG_MEMORY_HOTREMOVE
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int arch_remove_memory(u64 start, u64 size)
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{
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/* TODO */
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return -EBUSY;
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}
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#endif
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#endif
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struct kmem_cache *pgd_cache;
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void __init pgtable_cache_init(void)
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