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[POWERPC] Add remove_memory() for 64-bit powerpc 

Supply remove_memory() function for 64-bit powerpc.  This is still
not quite complete as it needs to do some more arch-specific stuff,
which will be added in a later patch.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Badari Pulavarty 2008-02-05 00:10:16 -08:00 committed by Paul Mackerras
parent 44621be4b5
commit aa620abe75
1 changed files with 16 additions and 0 deletions
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16
arch/powerpc/mm/mem.c
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@ -129,6 +129,22 @@ int __devinit arch_add_memory(int nid, u64 start, u64 size)
return __add_pages(zone, start_pfn, nr_pages);
}
#ifdef CONFIG_MEMORY_HOTREMOVE
int remove_memory(u64 start, u64 size)
{
unsigned long start_pfn, end_pfn;
int ret;
start_pfn = start >> PAGE_SHIFT;
end_pfn = start_pfn + (size >> PAGE_SHIFT);
ret = offline_pages(start_pfn, end_pfn, 120 * HZ);
if (ret)
goto out;
/* Arch-specific calls go here - next patch */
out:
return ret;
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_MEMORY_HOTPLUG */
void show_mem(void)