Corresponding to memblock_set_current_limit_high(), we introduce
memblock_set_current_limit_low()
to set the lowest limit for memblock.
Signed-off-by: Tang Chen <tangc...@cn.fujitsu.com>
Reviewed-by: Zhang Yanfei <zhangyan...@cn.fujitsu.com>
---
include/linux/memblock.h | 9 ++++++++-
mm/memblock.c | 5 +++++
2 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 40eb18e..cabd685 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -174,6 +174,14 @@ static inline void memblock_dump_all(void)
}
/**
+ * memblock_set_current_limit_low - Set the current allocation lower limit to
+ * allow limiting allocations to what is currently
+ * accessible during boot
+ * @limit: New lower limit value (physical address)
+ */
+void memblock_set_current_limit_low(phys_addr_t limit);
+
+/**
* memblock_set_current_limit_high - Set the current allocation upper limit to
* allow limiting allocations to what is currently
* accessible during boot
@@ -181,7 +189,6 @@ static inline void memblock_dump_all(void)
*/
void memblock_set_current_limit_high(phys_addr_t limit);
-
/*
* pfn conversion functions
*
diff --git a/mm/memblock.c b/mm/memblock.c
index 0dd5387..54c1c2e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -989,6 +989,11 @@ void __init_memblock memblock_trim_memory(phys_addr_t
align)
}
}
+void __init_memblock memblock_set_current_limit_low(phys_addr_t limit)
+{
+ memblock.current_limit_low = limit;
+}
+
void __init_memblock memblock_set_current_limit_high(phys_addr_t limit)
{
memblock.current_limit_high = limit;
--
1.7.1
--
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