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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-10-08 08:43:00 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-10-08 08:43:00 -0700 |
| commit | e3c55d406bd8df1a878546002c93db90c42be10c (patch) | |
| tree | efb0ba2707c95fd7166cf1b76887c43c977e37dd /mm/memblock.c | |
| parent | Input: st1232 - include linux/of.h header (diff) | |
| parent | Linux 3.12-rc4 (diff) | |
| download | wireguard-linux-e3c55d406bd8df1a878546002c93db90c42be10c.tar.xz wireguard-linux-e3c55d406bd8df1a878546002c93db90c42be10c.zip | |
Merge tag 'v3.12-rc4' into next
Merge with mainline to bring in changes to input subsystem that were
committed through other trees.
Diffstat (limited to 'mm/memblock.c')
| -rw-r--r-- | mm/memblock.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index a847bfe6f3ba..0ac412a0a7ee 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -914,6 +914,24 @@ int __init_memblock memblock_is_memory(phys_addr_t addr) return memblock_search(&memblock.memory, addr) != -1; } +#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP +int __init_memblock memblock_search_pfn_nid(unsigned long pfn, + unsigned long *start_pfn, unsigned long *end_pfn) +{ + struct memblock_type *type = &memblock.memory; + int mid = memblock_search(type, (phys_addr_t)pfn << PAGE_SHIFT); + + if (mid == -1) + return -1; + + *start_pfn = type->regions[mid].base >> PAGE_SHIFT; + *end_pfn = (type->regions[mid].base + type->regions[mid].size) + >> PAGE_SHIFT; + + return type->regions[mid].nid; +} +#endif + /** * memblock_is_region_memory - check if a region is a subset of memory * @base: base of region to check |