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Subject[PATCH 04/16] x86,memblock: Add memblock_x86_reserve_range/memblock_x86_free_range
Date
they are wrappers for core versions.
they are taking start/end/name instead of base/size.
will make x86 conversion more easy

could add more debug print out

-v2: change get_max_mapped() to memblock.default_alloc_limit according to Michael
Ellerman and Ben
change to memblock_x86_reserve_range and memblock_x86_free_range according to Michael Ellerman
-v3: call check_and_double after reserve/free, so could avoid to use
find_memblock_area. Suggested by Michael Ellerman

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/include/asm/memblock.h | 3 +++
arch/x86/mm/memblock.c | 22 ++++++++++++++++++++++
2 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/memblock.h b/arch/x86/include/asm/memblock.h
index 69cf853..e11ddf0 100644
--- a/arch/x86/include/asm/memblock.h
+++ b/arch/x86/include/asm/memblock.h
@@ -6,4 +6,7 @@
u64 memblock_x86_find_in_range_size(u64 start, u64 *sizep, u64 align);
void memblock_x86_to_bootmem(u64 start, u64 end);

+void memblock_x86_reserve_range(u64 start, u64 end, char *name);
+void memblock_x86_free_range(u64 start, u64 end);
+
#endif
diff --git a/arch/x86/mm/memblock.c b/arch/x86/mm/memblock.c
index 7986a12..80cdcf8 100644
--- a/arch/x86/mm/memblock.c
+++ b/arch/x86/mm/memblock.c
@@ -116,3 +116,25 @@ void __init memblock_x86_to_bootmem(u64 start, u64 end)
memblock_reserve(__pa(memblock.reserved.regions), sizeof(struct memblock_region) * memblock.reserved.max);
}
#endif
+
+void __init memblock_x86_reserve_range(u64 start, u64 end, char *name)
+{
+ if (start == end)
+ return;
+
+ if (WARN_ONCE(start > end, "memblock_x86_reserve_range: wrong range [%#llx, %#llx]\n", start, end))
+ return;
+
+ memblock_reserve(start, end - start);
+}
+
+void __init memblock_x86_free_range(u64 start, u64 end)
+{
+ if (start == end)
+ return;
+
+ if (WARN_ONCE(start > end, "memblock_x86_free_range: wrong range [%#llx, %#llx]\n", start, end))
+ return;
+
+ memblock_free(start, end - start);
+}
--
1.6.4.2


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