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Subject[PATCH 43/43] memblock: Add memblock_find_in_range()
Date
From: Yinghai Lu <yinghai@kernel.org>

This is a wrapper for memblock_find_base() using slightly different
arguments (start,end instead of start,size for example) in order to
make it easier to convert existing arch/x86 code.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 3978e6a..4df09bd 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -47,6 +47,8 @@ extern int memblock_can_resize;
#define memblock_dbg(fmt, ...) \
if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)

+u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align);
+
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
extern long memblock_add(phys_addr_t base, phys_addr_t size);
diff --git a/mm/memblock.c b/mm/memblock.c
index a17faea..b7ab10a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -162,6 +162,14 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
return MEMBLOCK_ERROR;
}

+/*
+ * Find a free area with specified alignment in a specific range.
+ */
+u64 __init_memblock memblock_find_in_range(u64 start, u64 end, u64 size, u64 align)
+{
+ return memblock_find_base(size, align, start, end);
+}
+
static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
--
1.7.0.4


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