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From: Yinghai Lu on 13 May 2010 20:30
they are wrappers for core versions.

they are taking start/end/name instead of base/size.

could add more debug print out

-v2: change get_max_mapped() to lmb.default_alloc_limit according to Michael
Ellerman and Ben
change to lmb_reserve_area and lmb_free_area according to Michael Ellerman
-v3: call check_and_double after reserve/free, so could avoid to use
find_lmb_area. Suggested by Michael Ellerman

Signed-off-by: Yinghai Lu <yinghai(a)kernel.org>
---
arch/x86/include/asm/lmb.h | 4 ++++
arch/x86/mm/lmb.c | 27 +++++++++++++++++++++++++++
2 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/lmb.h b/arch/x86/include/asm/lmb.h
index 2f06714..bc85c1e 100644
--- a/arch/x86/include/asm/lmb.h
+++ b/arch/x86/include/asm/lmb.h
@@ -6,4 +6,8 @@
u64 lmb_find_area_size(u64 start, u64 *sizep, u64 align);
void lmb_to_bootmem(u64 start, u64 end);

+void lmb_reserve_area(u64 start, u64 end, char *name);
+void lmb_free_area(u64 start, u64 end);
+void lmb_add_memory(u64 start, u64 end);
+
#endif
diff --git a/arch/x86/mm/lmb.c b/arch/x86/mm/lmb.c
index 37a05e2..0dbe05b 100644
--- a/arch/x86/mm/lmb.c
+++ b/arch/x86/mm/lmb.c
@@ -117,3 +117,30 @@ void __init lmb_to_bootmem(u64 start, u64 end)
lmb.reserved.cnt = 0;
}
#endif
+
+void __init lmb_add_memory(u64 start, u64 end)
+{
+ lmb_add_region(&lmb.memory, start, end - start);
+}
+
+void __init lmb_reserve_area(u64 start, u64 end, char *name)
+{
+ if (start == end)
+ return;
+
+ if (WARN_ONCE(start > end, "lmb_reserve_area: wrong range [%#llx, %#llx]\n", start, end))
+ return;
+
+ lmb_add_region(&lmb.reserved, start, end - start);
+}
+
+void __init lmb_free_area(u64 start, u64 end)
+{
+ if (start == end)
+ return;
+
+ if (WARN_ONCE(start > end, "lmb_free_area: wrong range [%#llx, %#llx]\n", start, end))
+ return;
+
+ lmb_free(start, end - start);
+}
--
1.6.4.2

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