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Subject[PATCH 14/23] memblock: Implement memblock_add_node()
Date
Implement memblock_add_node() which can add a new memblock memory
region with specific node ID.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>
---
include/linux/memblock.h | 1 +
mm/memblock.c | 20 +++++++++++++-------
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 208bfc9..f548e4d 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -52,6 +52,7 @@ int memblock_free_reserved_regions(void);
int memblock_reserve_reserved_regions(void);

void memblock_allow_resize(void);
+int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
int memblock_add(phys_addr_t base, phys_addr_t size);
int memblock_remove(phys_addr_t base, phys_addr_t size);
int memblock_free(phys_addr_t base, phys_addr_t size);
diff --git a/mm/memblock.c b/mm/memblock.c
index d74efa3..19093b5 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -324,6 +324,7 @@ static void __init_memblock memblock_insert_region(struct memblock_type *type,
* @type: memblock type to add new region into
* @base: base address of the new region
* @size: size of the new region
+ * @nid: nid of the new region
*
* Add new memblock region [@base,@base+@size) into @type. The new region
* is allowed to overlap with existing ones - overlaps don't affect already
@@ -334,7 +335,7 @@ static void __init_memblock memblock_insert_region(struct memblock_type *type,
* 0 on success, -errno on failure.
*/
static int __init_memblock memblock_add_region(struct memblock_type *type,
- phys_addr_t base, phys_addr_t size)
+ phys_addr_t base, phys_addr_t size, int nid)
{
bool insert = false;
phys_addr_t obase = base;
@@ -346,7 +347,7 @@ static int __init_memblock memblock_add_region(struct memblock_type *type,
WARN_ON(type->cnt != 1 || type->total_size);
type->regions[0].base = base;
type->regions[0].size = size;
- memblock_set_region_node(&type->regions[0], MAX_NUMNODES);
+ memblock_set_region_node(&type->regions[0], nid);
type->total_size = size;
return 0;
}
@@ -376,7 +377,7 @@ repeat:
nr_new++;
if (insert)
memblock_insert_region(type, i++, base,
- rbase - base, MAX_NUMNODES);
+ rbase - base, nid);
}
/* area below @rend is dealt with, forget about it */
base = min(rend, end);
@@ -386,8 +387,7 @@ repeat:
if (base < end) {
nr_new++;
if (insert)
- memblock_insert_region(type, i, base, end - base,
- MAX_NUMNODES);
+ memblock_insert_region(type, i, base, end - base, nid);
}

/*
@@ -406,9 +406,15 @@ repeat:
}
}

+int __init_memblock memblock_add_node(phys_addr_t base, phys_addr_t size,
+ int nid)
+{
+ return memblock_add_region(&memblock.memory, base, size, nid);
+}
+
int __init_memblock memblock_add(phys_addr_t base, phys_addr_t size)
{
- return memblock_add_region(&memblock.memory, base, size);
+ return memblock_add_region(&memblock.memory, base, size, MAX_NUMNODES);
}

/**
@@ -522,7 +528,7 @@ int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)
(void *)_RET_IP_);
BUG_ON(0 == size);

- return memblock_add_region(_rgn, base, size);
+ return memblock_add_region(_rgn, base, size, MAX_NUMNODES);
}

/**
--
1.7.6


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