diff options
| author | Tang Chen <tangchen@cn.fujitsu.com> | 2013-02-07 12:26:35 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-02-14 15:25:23 +1100 |
| commit | 3f5daf114f707a9ca1897fee2ae7451b716afda0 (patch) | |
| tree | e099200d741fc453088be0098bb2966f8ea54562 /include/linux | |
| parent | a8bc2b5150b55969a7e7044883025edd3f314525 (diff) | |
page_alloc: add movable_memmap kernel parameter
Add functions to parse movablecore_map boot option. Since the option
could be specified more then once, all the maps will be stored in the
global variable movablecore_map.map array.
And also, we keep the array in monotonic increasing order by start_pfn.
And merge all overlapped ranges.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Reviewed-by: Wen Congyang <wency@cn.fujitsu.com>
Tested-by: Lin Feng <linfeng@cn.fujitsu.com>
Cc: Wu Jianguo <wujianguo@huawei.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 5ca9b9a588e1..1c1065dbd0a2 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1361,6 +1361,17 @@ extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); extern void sparse_memory_present_with_active_regions(int nid); +#define MOVABLECORE_MAP_MAX MAX_NUMNODES +struct movablecore_entry { + unsigned long start_pfn; /* start pfn of memory segment */ + unsigned long end_pfn; /* end pfn of memory segment */ +}; + +struct movablecore_map { + int nr_map; + struct movablecore_entry map[MOVABLECORE_MAP_MAX]; +}; + #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ #if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \ |