WIP: add memblock_overlaps_memory

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

2 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index cc4b01972060..22be48641244 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -322,6 +322,7 @@ phys_addr_t memblock_end_of_DRAM(void);
 void memblock_enforce_memory_limit(phys_addr_t memory_limit);
 int memblock_is_memory(phys_addr_t addr);
 int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
+int memblock_overlaps_memory(phys_addr_t base, phys_addr_t size);
 int memblock_is_reserved(phys_addr_t addr);
 int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
 
diff --git a/mm/memblock.c b/mm/memblock.c
index 87108e77e476..248f3b337c2a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1554,6 +1554,12 @@ int __init_memblock memblock_is_region_memory(phys_addr_t base, phys_addr_t size
 		 memblock.memory.regions[idx].size) >= end;
 }
 
+int __init_memblock memblock_overlaps_memory(phys_addr_t base, phys_addr_t size)
+{
+	memblock_cap_size(base, &size);
+	return memblock_overlaps_region(&memblock.memory, base, size) >= 0;
+}
+
 /**
  * memblock_is_region_reserved - check if a region intersects reserved memory
  * @base: base of region to check