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[S390] Have s390 use add_active_range() and free_area_init_nodes.

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Size zones and holes in an architecture independent manner for s390.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens 2006-10-04 20:02:19 +02:00 committed by Martin Schwidefsky
parent cb601d41c1
commit 7676bef9c1
4 changed files with 27 additions and 67 deletions
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3
arch/s390/Kconfig
View file

@ -233,6 +233,9 @@ config WARN_STACK_SIZE
This allows you to specify the maximum frame size a function may
have without the compiler complaining about it.
config ARCH_POPULATES_NODE_MAP
def_bool y
source "mm/Kconfig"
comment "I/O subsystem configuration"

1
arch/s390/defconfig
View file

@ -118,6 +118,7 @@ CONFIG_PACK_STACK=y
CONFIG_CHECK_STACK=y
CONFIG_STACK_GUARD=256
# CONFIG_WARN_STACK is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set

55
arch/s390/kernel/setup.c
View file

@ -70,7 +70,6 @@ struct {
#define CHUNK_READ_WRITE 0
#define CHUNK_READ_ONLY 1
volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
unsigned long __initdata zholes_size[MAX_NR_ZONES];
static unsigned long __initdata memory_end;
/*
@ -358,21 +357,6 @@ void machine_power_off(void)
*/
void (*pm_power_off)(void) = machine_power_off;
static void __init
add_memory_hole(unsigned long start, unsigned long end)
{
unsigned long dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT;
if (end <= dma_pfn)
zholes_size[ZONE_DMA] += end - start + 1;
else if (start > dma_pfn)
zholes_size[ZONE_NORMAL] += end - start + 1;
else {
zholes_size[ZONE_DMA] += dma_pfn - start + 1;
zholes_size[ZONE_NORMAL] += end - dma_pfn;
}
}
static int __init early_parse_mem(char *p)
{
memory_end = memparse(p, &p);
@ -494,7 +478,6 @@ setup_memory(void)
{
unsigned long bootmap_size;
unsigned long start_pfn, end_pfn, init_pfn;
unsigned long last_rw_end;
int i;
/*
@ -543,46 +526,34 @@ setup_memory(void)
#endif
/*
* Initialize the boot-time allocator (with low memory only):
* Initialize the boot-time allocator
*/
bootmap_size = init_bootmem(start_pfn, end_pfn);
/*
* Register RAM areas with the bootmem allocator.
*/
last_rw_end = start_pfn;
for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
unsigned long start_chunk, end_chunk;
unsigned long start_chunk, end_chunk, pfn;
if (memory_chunk[i].type != CHUNK_READ_WRITE)
continue;
start_chunk = (memory_chunk[i].addr + PAGE_SIZE - 1);
start_chunk >>= PAGE_SHIFT;
end_chunk = (memory_chunk[i].addr + memory_chunk[i].size);
end_chunk >>= PAGE_SHIFT;
if (start_chunk < start_pfn)
start_chunk = start_pfn;
if (end_chunk > end_pfn)
end_chunk = end_pfn;
if (start_chunk < end_chunk) {
/* Initialize storage key for RAM pages */
for (init_pfn = start_chunk ; init_pfn < end_chunk;
init_pfn++)
page_set_storage_key(init_pfn << PAGE_SHIFT,
PAGE_DEFAULT_KEY);
free_bootmem(start_chunk << PAGE_SHIFT,
(end_chunk - start_chunk) << PAGE_SHIFT);
if (last_rw_end < start_chunk)
add_memory_hole(last_rw_end, start_chunk - 1);
last_rw_end = end_chunk;
}
start_chunk = PFN_DOWN(memory_chunk[i].addr);
end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size) - 1;
end_chunk = min(end_chunk, end_pfn);
if (start_chunk >= end_chunk)
continue;
add_active_range(0, start_chunk, end_chunk);
pfn = max(start_chunk, start_pfn);
for (; pfn <= end_chunk; pfn++)
page_set_storage_key(PFN_PHYS(pfn), PAGE_DEFAULT_KEY);
}
psw_set_key(PAGE_DEFAULT_KEY);
if (last_rw_end < end_pfn - 1)
add_memory_hole(last_rw_end, end_pfn - 1);
free_bootmem_with_active_regions(0, max_pfn);
reserve_bootmem(0, PFN_PHYS(start_pfn));
/*
* Reserve the bootmem bitmap itself as well. We do this in two

35
arch/s390/mm/init.c
View file

@ -82,7 +82,6 @@ void show_mem(void)
printk("%d pages swap cached\n",cached);
}
extern unsigned long __initdata zholes_size[];
/*
* paging_init() sets up the page tables
*/
@ -99,16 +98,15 @@ void __init paging_init(void)
unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE;
static const int ssm_mask = 0x04000000L;
unsigned long ro_start_pfn, ro_end_pfn;
unsigned long zones_size[MAX_NR_ZONES];
unsigned long max_zone_pfns[MAX_NR_ZONES];
ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
memset(zones_size, 0, sizeof(zones_size));
zones_size[ZONE_DMA] = max_low_pfn;
free_area_init_node(0, &contig_page_data, zones_size,
__pa(PAGE_OFFSET) >> PAGE_SHIFT,
zholes_size);
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_DMA] = max_low_pfn;
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns);
/* unmap whole virtual address space */
@ -153,7 +151,6 @@ void __init paging_init(void)
__raw_local_irq_ssm(ssm_mask);
local_flush_tlb();
return;
}
#else /* CONFIG_64BIT */
@ -169,26 +166,16 @@ void __init paging_init(void)
unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) |
_KERN_REGION_TABLE;
static const int ssm_mask = 0x04000000L;
unsigned long zones_size[MAX_NR_ZONES];
unsigned long dma_pfn, high_pfn;
unsigned long ro_start_pfn, ro_end_pfn;
unsigned long max_zone_pfns[MAX_NR_ZONES];
memset(zones_size, 0, sizeof(zones_size));
dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT;
high_pfn = max_low_pfn;
ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
if (dma_pfn > high_pfn)
zones_size[ZONE_DMA] = high_pfn;
else {
zones_size[ZONE_DMA] = dma_pfn;
zones_size[ZONE_NORMAL] = high_pfn - dma_pfn;
}
/* Initialize mem_map[]. */
free_area_init_node(0, &contig_page_data, zones_size,
__pa(PAGE_OFFSET) >> PAGE_SHIFT, zholes_size);
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns);
/*
* map whole physical memory to virtual memory (identity mapping)
@ -237,8 +224,6 @@ void __init paging_init(void)
__raw_local_irq_ssm(ssm_mask);
local_flush_tlb();
return;
}
#endif /* CONFIG_64BIT */