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s390/mm: Convert bootmem to memblock

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The original bootmem allocator is getting replaced by memblock. To
cover the needs of the s390 kdump implementation the physical memory
list is used.
With this patch the bootmem allocator and its bitmaps are completely
removed from s390.

Signed-off-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Philipp Hachtmann
2014-01-29 18:16:01 +01:00
committed by Martin Schwidefsky
parent 70210ed950
commit 50be634507
10 changed files with 281 additions and 509 deletions
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30
arch/s390/mm/vmem.c
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@@ -10,6 +10,7 @@
#include <linux/list.h>
#include <linux/hugetlb.h>
#include <linux/slab.h>
#include <linux/memblock.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/setup.h>
@@ -66,7 +67,8 @@ static pte_t __ref *vmem_pte_alloc(unsigned long address)
if (slab_is_available())
pte = (pte_t *) page_table_alloc(&init_mm, address);
else
pte = alloc_bootmem(PTRS_PER_PTE * sizeof(pte_t));
pte = alloc_bootmem_align(PTRS_PER_PTE * sizeof(pte_t),
PTRS_PER_PTE * sizeof(pte_t));
if (!pte)
return NULL;
clear_table((unsigned long *) pte, _PAGE_INVALID,
@@ -371,16 +373,14 @@ out:
void __init vmem_map_init(void)
{
unsigned long ro_start, ro_end;
unsigned long start, end;
int i;
struct memblock_region *reg;
phys_addr_t start, end;
ro_start = PFN_ALIGN((unsigned long)&_stext);
ro_end = (unsigned long)&_eshared & PAGE_MASK;
for (i = 0; i < MEMORY_CHUNKS; i++) {
if (!memory_chunk[i].size)
continue;
start = memory_chunk[i].addr;
end = memory_chunk[i].addr + memory_chunk[i].size;
for_each_memblock(memory, reg) {
start = reg->base;
end = reg->base + reg->size - 1;
if (start >= ro_end || end <= ro_start)
vmem_add_mem(start, end - start, 0);
else if (start >= ro_start && end <= ro_end)
@@ -400,23 +400,21 @@ void __init vmem_map_init(void)
}
/*
* Convert memory chunk array to a memory segment list so there is a single
* list that contains both r/w memory and shared memory segments.
* Convert memblock.memory to a memory segment list so there is a single
* list that contains all memory segments.
*/
static int __init vmem_convert_memory_chunk(void)
{
struct memblock_region *reg;
struct memory_segment *seg;
int i;
mutex_lock(&vmem_mutex);
for (i = 0; i < MEMORY_CHUNKS; i++) {
if (!memory_chunk[i].size)
continue;
for_each_memblock(memory, reg) {
seg = kzalloc(sizeof(*seg), GFP_KERNEL);
if (!seg)
panic("Out of memory...\n");
seg->start = memory_chunk[i].addr;
seg->size = memory_chunk[i].size;
seg->start = reg->base;
seg->size = reg->size;
insert_memory_segment(seg);
}
mutex_unlock(&vmem_mutex);