Subject: + mm-free-memblockmemory-in-free_all_bootmem.patch added to -mm tree
To: phacht@xxxxxxxxxxxxxxxxxx,hannes@xxxxxxxxxxx,iamjoonsoo.kim@xxxxxxx,tangchen@xxxxxxxxxxxxxx,tj@xxxxxxxxxx,toshi.kani@xxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 07 Jan 2014 13:43:07 -0800
The patch titled
Subject: mm: free memblock.memory in free_all_bootmem
has been added to the -mm tree. Its filename is
mm-free-memblockmemory-in-free_all_bootmem.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-free-memblockmemory-in-free_all_bootmem.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-free-memblockmemory-in-free_all_bootmem.patch
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------------------------------------------------------
From: Philipp Hachtmann <phacht@xxxxxxxxxxxxxxxxxx>
Subject: mm: free memblock.memory in free_all_bootmem
When calling free_all_bootmem() the free areas under memblock's control
are released to the buddy allocator. Additionally the reserved list is
freed if it was reallocated by memblock. The same should apply for the
memory list.
Signed-off-by: Philipp Hachtmann <phacht@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Cc: Toshi Kani <toshi.kani@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memblock.h | 1 +
mm/memblock.c | 12 ++++++++++++
mm/nobootmem.c | 7 ++++++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff -puN include/linux/memblock.h~mm-free-memblockmemory-in-free_all_bootmem include/linux/memblock.h
--- a/include/linux/memblock.h~mm-free-memblockmemory-in-free_all_bootmem
+++ a/include/linux/memblock.h
@@ -61,6 +61,7 @@ phys_addr_t memblock_find_in_range_node(
phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
phys_addr_t size, phys_addr_t align);
phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
+phys_addr_t get_allocated_memblock_memory_regions_info(phys_addr_t *addr);
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);
diff -puN mm/memblock.c~mm-free-memblockmemory-in-free_all_bootmem mm/memblock.c
--- a/mm/memblock.c~mm-free-memblockmemory-in-free_all_bootmem
+++ a/mm/memblock.c
@@ -291,6 +291,18 @@ phys_addr_t __init_memblock get_allocate
memblock.reserved.max);
}
+phys_addr_t __init_memblock get_allocated_memblock_memory_regions_info(
+ phys_addr_t *addr)
+{
+ if (memblock.memory.regions == memblock_memory_init_regions)
+ return 0;
+
+ *addr = __pa(memblock.memory.regions);
+
+ return PAGE_ALIGN(sizeof(struct memblock_region) *
+ memblock.memory.max);
+}
+
/**
* memblock_double_array - double the size of the memblock regions array
* @type: memblock type of the regions array being doubled
diff -puN mm/nobootmem.c~mm-free-memblockmemory-in-free_all_bootmem mm/nobootmem.c
--- a/mm/nobootmem.c~mm-free-memblockmemory-in-free_all_bootmem
+++ a/mm/nobootmem.c
@@ -122,11 +122,16 @@ static unsigned long __init free_low_mem
for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL)
count += __free_memory_core(start, end);
- /* free range that is used for reserved array if we allocate it */
+ /* Free memblock.reserved array if it was allocated */
size = get_allocated_memblock_reserved_regions_info(&start);
if (size)
count += __free_memory_core(start, start + size);
+ /* Free memblock.memory array if it was allocated */
+ size = get_allocated_memblock_memory_regions_info(&start);
+ if (size)
+ count += __free_memory_core(start, start + size);
+
return count;
}
_
Patches currently in -mm which might be from phacht@xxxxxxxxxxxxxxxxxx are
mm-nobootmemc-add-return-value-check-in-__alloc_memory_core_early.patch
mm-free-memblockmemory-in-free_all_bootmem.patch
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