x86, memblock: Add memblock_x86_memory_in_range()
It will return memory size in specified range according to memblock.memory.region
Try to share some code with memblock_x86_free_memory_in_range() by passing get_free to
__memblock_x86_memory_in_range().
-v2: Ben want _in_range in the name instead of size
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/include/asm/memblock.h b/arch/x86/include/asm/memblock.h
index fc3c230..2c304bb 100644
--- a/arch/x86/include/asm/memblock.h
+++ b/arch/x86/include/asm/memblock.h
@@ -16,5 +16,6 @@
u64 memblock_x86_hole_size(u64 start, u64 end);
u64 memblock_x86_find_in_range_node(int nid, u64 start, u64 end, u64 size, u64 align);
u64 memblock_x86_free_memory_in_range(u64 addr, u64 limit);
+u64 memblock_x86_memory_in_range(u64 addr, u64 limit);
#endif
diff --git a/arch/x86/mm/memblock.c b/arch/x86/mm/memblock.c
index 30d60cf..32ddad5 100644
--- a/arch/x86/mm/memblock.c
+++ b/arch/x86/mm/memblock.c
@@ -211,7 +211,7 @@
}
#endif
-u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit)
+static u64 __init __memblock_x86_memory_in_range(u64 addr, u64 limit, bool get_free)
{
int i, count;
struct range *range;
@@ -240,6 +240,10 @@
}
subtract_range(range, count, 0, addr);
subtract_range(range, count, limit, -1ULL);
+
+ /* Subtract memblock.reserved.region in range ? */
+ if (!get_free)
+ goto sort_and_count_them;
for_each_memblock(reserved, r) {
final_start = PFN_DOWN(r->base);
final_end = PFN_UP(r->base + r->size);
@@ -250,6 +254,8 @@
subtract_range(range, count, final_start, final_end);
}
+
+sort_and_count_them:
nr_range = clean_sort_range(range, count);
free_size = 0;
@@ -259,6 +265,16 @@
return free_size << PAGE_SHIFT;
}
+u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit)
+{
+ return __memblock_x86_memory_in_range(addr, limit, true);
+}
+
+u64 __init memblock_x86_memory_in_range(u64 addr, u64 limit)
+{
+ return __memblock_x86_memory_in_range(addr, limit, false);
+}
+
void __init memblock_x86_reserve_range(u64 start, u64 end, char *name)
{
if (start == end)