diff options
| author | Tang Chen <tangchen@cn.fujitsu.com> | 2013-02-22 16:33:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:14 -0800 |
| commit | fb06bc8e5f42f38c011de0e59481f464a82380f6 (patch) | |
| tree | ac55622da0b397e57cdb426f634441939187f99d /mm/memblock.c | |
| parent | 42f47e27e761fee07da69e04612ec7dd0d490edd (diff) | |
| download | op-kernel-dev-fb06bc8e5f42f38c011de0e59481f464a82380f6.zip op-kernel-dev-fb06bc8e5f42f38c011de0e59481f464a82380f6.tar.gz | |
page_alloc: bootmem limit with movablecore_map
Ensure the bootmem will not allocate memory from areas that may be
ZONE_MOVABLE. The map info is from movablecore_map boot option.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Lai Jiangshan <laijs@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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memblock.c')
| -rw-r--r-- | mm/memblock.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index b8d9147..c83ff97 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -101,6 +101,7 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start, { phys_addr_t this_start, this_end, cand; u64 i; + int curr = movablemem_map.nr_map - 1; /* pump up @end */ if (end == MEMBLOCK_ALLOC_ACCESSIBLE) @@ -114,13 +115,28 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start, this_start = clamp(this_start, start, end); this_end = clamp(this_end, start, end); - if (this_end < size) +restart: + if (this_end <= this_start || this_end < size) continue; + for (; curr >= 0; curr--) { + if ((movablemem_map.map[curr].start_pfn << PAGE_SHIFT) + < this_end) + break; + } + cand = round_down(this_end - size, align); + if (curr >= 0 && + cand < movablemem_map.map[curr].end_pfn << PAGE_SHIFT) { + this_end = movablemem_map.map[curr].start_pfn + << PAGE_SHIFT; + goto restart; + } + if (cand >= this_start) return cand; } + return 0; } |
