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mm, tile: drop arch_{add,remove}_memory

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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 <[email protected]>
Signed-off-by: Chris Metcalf <[email protected]>
This commit is contained in:
Michal Hocko 2017-03-30 13:54:50 +02:00 • committed by Chris Metcalf
commit 0af0bc3817
1 changed files with 0 additions and 30 deletions
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30
arch/tile/mm/init.c
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@ -857,36 +857,6 @@ void __init mem_init(void)
#endif
}
/*
* this is for the non-NUMA, single node SMP system case.
* Specifically, in the case of x86, we will always add
* memory to the highmem for now.
*/
#ifndef CONFIG_NEED_MULTIPLE_NODES
int arch_add_memory(u64 start, u64 size, bool for_device)
{
struct pglist_data *pgdata = &contig_page_data;
struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
return __add_pages(zone, start_pfn, nr_pages);
}
int remove_memory(u64 start, u64 size)
{
return -EINVAL;
}
#ifdef CONFIG_MEMORY_HOTREMOVE
int arch_remove_memory(u64 start, u64 size)
{
/* TODO */
return -EBUSY;
}
#endif
#endif
struct kmem_cache *pgd_cache;
void __init pgtable_cache_init(void)