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x86: Remove old bootmem code 

Requested by Ingo, Thomas and HPA.

The old bootmem code is no longer necessary, and the transition is
complete.  Remove it.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu 2010-08-25 13:39:18 -07:00 committed by H. Peter Anvin
parent 6f2a75369e
commit 774ea0bcb2
7 changed files with 1 additions and 189 deletions
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10
arch/x86/Kconfig
View File

@ -585,15 +585,7 @@ config PARAVIRT_DEBUG
a paravirt_op is missing when it is called.
config NO_BOOTMEM
default y
bool "Disable Bootmem code"
---help---
Use memblock directly instead of bootmem before slab is ready.
- allocator (buddy) [generic]
- early allocator (bootmem) [generic]
- very early allocator (memblock) [some generic]
- very very early allocator (early brk model) [x86]
So reduce one layer between early allocator to final allocator
def_bool y
config MEMTEST
bool "Memtest"

4
arch/x86/kernel/setup.c
View File

@ -1014,10 +1014,6 @@ void __init setup_arch(char **cmdline_p)
initmem_init(0, max_pfn, acpi, k8);
memblock_find_dma_reserve();
#ifndef CONFIG_NO_BOOTMEM
memblock_x86_to_bootmem(0, max_low_pfn<<PAGE_SHIFT);
#endif
dma32_reserve_bootmem();
#ifdef CONFIG_KVM_CLOCK

56
arch/x86/mm/init_32.c
View File

@ -751,68 +751,12 @@ static void __init zone_sizes_init(void)
free_area_init_nodes(max_zone_pfns);
}
#ifndef CONFIG_NO_BOOTMEM
static unsigned long __init setup_node_bootmem(int nodeid,
unsigned long start_pfn,
unsigned long end_pfn,
unsigned long bootmap)
{
unsigned long bootmap_size;
/* don't touch min_low_pfn */
bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
bootmap >> PAGE_SHIFT,
start_pfn, end_pfn);
printk(KERN_INFO " node %d low ram: %08lx - %08lx\n",
nodeid, start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
printk(KERN_INFO " node %d bootmap %08lx - %08lx\n",
nodeid, bootmap, bootmap + bootmap_size);
free_bootmem_with_active_regions(nodeid, end_pfn);
return bootmap + bootmap_size;
}
#endif
void __init setup_bootmem_allocator(void)
{
#ifndef CONFIG_NO_BOOTMEM
int nodeid;
phys_addr_t bootmap_size, bootmap;
/*
* Initialize the boot-time allocator (with low memory only):
*/
bootmap_size = bootmem_bootmap_pages(max_low_pfn)<<PAGE_SHIFT;
bootmap = memblock_find_in_range(0, max_pfn_mapped<<PAGE_SHIFT, bootmap_size,
PAGE_SIZE);
if (bootmap == MEMBLOCK_ERROR)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
memblock_x86_reserve_range(bootmap, bootmap + bootmap_size, "BOOTMAP");
#endif
printk(KERN_INFO " mapped low ram: 0 - %08lx\n",
max_pfn_mapped<<PAGE_SHIFT);
printk(KERN_INFO " low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);
#ifndef CONFIG_NO_BOOTMEM
for_each_online_node(nodeid) {
unsigned long start_pfn, end_pfn;
#ifdef CONFIG_NEED_MULTIPLE_NODES
start_pfn = node_start_pfn[nodeid];
end_pfn = node_end_pfn[nodeid];
if (start_pfn > max_low_pfn)
continue;
if (end_pfn > max_low_pfn)
end_pfn = max_low_pfn;
#else
start_pfn = 0;
end_pfn = max_low_pfn;
#endif
bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
bootmap);
}
#endif
after_bootmem = 1;
}

41
arch/x86/mm/init_64.c
View File

@ -572,23 +572,7 @@ kernel_physical_mapping_init(unsigned long start,
void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
int acpi, int k8)
{
#ifndef CONFIG_NO_BOOTMEM
unsigned long bootmap_size, bootmap;
bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
bootmap = memblock_find_in_range(0, end_pfn<<PAGE_SHIFT, bootmap_size,
PAGE_SIZE);
if (bootmap == MEMBLOCK_ERROR)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
memblock_x86_reserve_range(bootmap, bootmap + bootmap_size, "BOOTMAP");
/* don't touch min_low_pfn */
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap >> PAGE_SHIFT,
0, end_pfn);
memblock_x86_register_active_regions(0, start_pfn, end_pfn);
free_bootmem_with_active_regions(0, end_pfn);
#else
memblock_x86_register_active_regions(0, start_pfn, end_pfn);
#endif
}
#endif
@ -798,31 +782,6 @@ void mark_rodata_ro(void)
#endif
#ifndef CONFIG_NO_BOOTMEM
int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
int flags)
{
unsigned long pfn = phys >> PAGE_SHIFT;
if (pfn >= max_pfn) {
/*
* This can happen with kdump kernels when accessing
* firmware tables:
*/
if (pfn < max_pfn_mapped)
return -EFAULT;
printk(KERN_ERR "reserve_bootmem: illegal reserve %lx %lu\n",
phys, len);
return -EFAULT;
}
reserve_bootmem(phys, len, flags);
return 0;
}
#endif
int kern_addr_valid(unsigned long addr)
{
unsigned long above = ((long)addr) >> __VIRTUAL_MASK_SHIFT;

29
arch/x86/mm/memblock.c
View File

@ -109,7 +109,6 @@ static __init struct range *find_range_array(int count)
return range;
}
#ifdef CONFIG_NO_BOOTMEM
static void __init memblock_x86_subtract_reserved(struct range *range, int az)
{
u64 final_start, final_end;
@ -182,34 +181,6 @@ int __init get_free_all_memory_range(struct range **rangep, int nodeid)
*rangep = range;
return nr_range;
}
#else
void __init memblock_x86_to_bootmem(u64 start, u64 end)
{
int count;
u64 final_start, final_end;
struct memblock_region *r;
/* Take out region array itself */
memblock_free_reserved_regions();
count = memblock.reserved.cnt;
memblock_dbg("(%d early reservations) ==> bootmem [%#010llx-%#010llx]\n", count, start, end - 1);
for_each_memblock(reserved, r) {
memblock_dbg(" [%#010llx-%#010llx] ", (u64)r->base, (u64)r->base + r->size - 1);
final_start = max(start, r->base);
final_end = min(end, r->base + r->size);
if (final_start >= final_end) {
memblock_dbg("\n");
continue;
}
memblock_dbg(" ==> [%#010llx-%#010llx]\n", final_start, final_end - 1);
reserve_bootmem_generic(final_start, final_end - final_start, BOOTMEM_DEFAULT);
}
/* Put region array back ? */
memblock_reserve_reserved_regions();
}
#endif
static u64 __init __memblock_x86_memory_in_range(u64 addr, u64 limit, bool get_free)
{

3
arch/x86/mm/numa_32.c
View File

@ -420,9 +420,6 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
for_each_online_node(nid) {
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
NODE_DATA(nid)->node_id = nid;
#ifndef CONFIG_NO_BOOTMEM
NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
#endif
}
setup_bootmem_allocator();

47
arch/x86/mm/numa_64.c
View File

@ -199,10 +199,6 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
unsigned long start_pfn, last_pfn, nodedata_phys;
const int pgdat_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
int nid;
#ifndef CONFIG_NO_BOOTMEM
unsigned long bootmap_start, bootmap_pages, bootmap_size;
void *bootmap;
#endif
if (!end)
return;
@ -239,47 +235,6 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
NODE_DATA(nodeid)->node_start_pfn = start_pfn;
NODE_DATA(nodeid)->node_spanned_pages = last_pfn - start_pfn;
#ifndef CONFIG_NO_BOOTMEM
NODE_DATA(nodeid)->bdata = &bootmem_node_data[nodeid];
/*
* Find a place for the bootmem map
* nodedata_phys could be on other nodes by alloc_bootmem,
* so need to sure bootmap_start not to be small, otherwise
* early_node_mem will get that with memblock_find_in_range instead
* of alloc_bootmem, that could clash with reserved range
*/
bootmap_pages = bootmem_bootmap_pages(last_pfn - start_pfn);
bootmap_start = roundup(nodedata_phys + pgdat_size, PAGE_SIZE);
/*
* SMP_CACHE_BYTES could be enough, but init_bootmem_node like
* to use that to align to PAGE_SIZE
*/
bootmap = early_node_mem(nodeid, bootmap_start, end,
bootmap_pages<<PAGE_SHIFT, PAGE_SIZE);
if (bootmap == NULL) {
memblock_x86_free_range(nodedata_phys, nodedata_phys + pgdat_size);
node_data[nodeid] = NULL;
return;
}
bootmap_start = __pa(bootmap);
memblock_x86_reserve_range(bootmap_start, bootmap_start+(bootmap_pages<<PAGE_SHIFT),
"BOOTMAP");
bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
bootmap_start >> PAGE_SHIFT,
start_pfn, last_pfn);
printk(KERN_INFO " bootmap [%016lx - %016lx] pages %lx\n",
bootmap_start, bootmap_start + bootmap_size - 1,
bootmap_pages);
nid = phys_to_nid(bootmap_start);
if (nid != nodeid)
printk(KERN_INFO " bootmap(%d) on node %d\n", nodeid, nid);
free_bootmem_with_active_regions(nodeid, end);
#endif
node_set_online(nodeid);
}
@ -704,9 +659,7 @@ unsigned long __init numa_free_all_bootmem(void)
for_each_online_node(i)
pages += free_all_bootmem_node(NODE_DATA(i));
#ifdef CONFIG_NO_BOOTMEM
pages += free_all_memory_core_early(MAX_NUMNODES);
#endif
return pages;
}