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| author | Badari Pulavarty <pbadari@us.ibm.com> | 2008-02-05 00:10:16 -0800 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-02-08 19:52:47 +1100 |
| commit | aa620abe756207222d234f785d41435fac486e06 (patch) | |
| tree | 9780e2e24eeda3de603d8054c92e29e6eaf5ab83 /arch/powerpc | |
| parent | 44621be4b563fbce32007ebfac91dfe8f5692743 (diff) | |
| download | linux-3.10-aa620abe756207222d234f785d41435fac486e06.tar.gz linux-3.10-aa620abe756207222d234f785d41435fac486e06.tar.bz2 linux-3.10-aa620abe756207222d234f785d41435fac486e06.zip | |
[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>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 93a5c53e342..f0a1fd268b7 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -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) |