[SPARC64]: Move over to sparsemem.
This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
ee29074d3b
commit
d1112018b4
7 changed files with 123 additions and 54 deletions
|
|
@ -186,6 +186,12 @@ endchoice
|
|||
|
||||
endmenu
|
||||
|
||||
config ARCH_SPARSEMEM_ENABLE
|
||||
def_bool y
|
||||
|
||||
config ARCH_SPARSEMEM_DEFAULT
|
||||
def_bool y
|
||||
|
||||
source "mm/Kconfig"
|
||||
|
||||
config GENERIC_ISA_DMA
|
||||
|
|
|
|||
|
|
@ -95,9 +95,6 @@ extern int __ashrdi3(int, int);
|
|||
|
||||
extern int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs);
|
||||
|
||||
extern unsigned long phys_base;
|
||||
extern unsigned long pfn_base;
|
||||
|
||||
extern unsigned int sys_call_table[];
|
||||
|
||||
extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
|
||||
|
|
@ -346,11 +343,7 @@ EXPORT_SYMBOL(__strncpy_from_user);
|
|||
EXPORT_SYMBOL(__clear_user);
|
||||
|
||||
/* Various address conversion macros use this. */
|
||||
EXPORT_SYMBOL(phys_base);
|
||||
EXPORT_SYMBOL(pfn_base);
|
||||
EXPORT_SYMBOL(sparc64_valid_addr_bitmap);
|
||||
EXPORT_SYMBOL(page_to_pfn);
|
||||
EXPORT_SYMBOL(pfn_to_page);
|
||||
|
||||
/* No version information on this, heavily used in inline asm,
|
||||
* and will always be 'void __ret_efault(void)'.
|
||||
|
|
|
|||
|
|
@ -130,11 +130,9 @@ static void __init read_obp_memory(const char *property,
|
|||
|
||||
unsigned long *sparc64_valid_addr_bitmap __read_mostly;
|
||||
|
||||
/* Ugly, but necessary... -DaveM */
|
||||
unsigned long phys_base __read_mostly;
|
||||
/* Kernel physical address base and size in bytes. */
|
||||
unsigned long kern_base __read_mostly;
|
||||
unsigned long kern_size __read_mostly;
|
||||
unsigned long pfn_base __read_mostly;
|
||||
|
||||
/* get_new_mmu_context() uses "cache + 1". */
|
||||
DEFINE_SPINLOCK(ctx_alloc_lock);
|
||||
|
|
@ -368,16 +366,6 @@ void __kprobes flush_icache_range(unsigned long start, unsigned long end)
|
|||
}
|
||||
}
|
||||
|
||||
unsigned long page_to_pfn(struct page *page)
|
||||
{
|
||||
return (unsigned long) ((page - mem_map) + pfn_base);
|
||||
}
|
||||
|
||||
struct page *pfn_to_page(unsigned long pfn)
|
||||
{
|
||||
return (mem_map + (pfn - pfn_base));
|
||||
}
|
||||
|
||||
void show_mem(void)
|
||||
{
|
||||
printk("Mem-info:\n");
|
||||
|
|
@ -773,9 +761,78 @@ void sparc_ultra_dump_dtlb(void)
|
|||
|
||||
extern unsigned long cmdline_memory_size;
|
||||
|
||||
unsigned long __init bootmem_init(unsigned long *pages_avail)
|
||||
/* Find a free area for the bootmem map, avoiding the kernel image
|
||||
* and the initial ramdisk.
|
||||
*/
|
||||
static unsigned long __init choose_bootmap_pfn(unsigned long start_pfn,
|
||||
unsigned long end_pfn)
|
||||
{
|
||||
unsigned long bootmap_size, start_pfn, end_pfn;
|
||||
unsigned long avoid_start, avoid_end, bootmap_size;
|
||||
int i;
|
||||
|
||||
bootmap_size = ((end_pfn - start_pfn) + 7) / 8;
|
||||
bootmap_size = ALIGN(bootmap_size, sizeof(long));
|
||||
|
||||
avoid_start = avoid_end = 0;
|
||||
#ifdef CONFIG_BLK_DEV_INITRD
|
||||
avoid_start = initrd_start;
|
||||
avoid_end = PAGE_ALIGN(initrd_end);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("choose_bootmap_pfn: kern[%lx:%lx] avoid[%lx:%lx]\n",
|
||||
kern_base, PAGE_ALIGN(kern_base + kern_size),
|
||||
avoid_start, avoid_end);
|
||||
#endif
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
unsigned long start, end;
|
||||
|
||||
start = pavail[i].phys_addr;
|
||||
end = start + pavail[i].reg_size;
|
||||
|
||||
while (start < end) {
|
||||
if (start >= kern_base &&
|
||||
start < PAGE_ALIGN(kern_base + kern_size)) {
|
||||
start = PAGE_ALIGN(kern_base + kern_size);
|
||||
continue;
|
||||
}
|
||||
if (start >= avoid_start && start < avoid_end) {
|
||||
start = avoid_end;
|
||||
continue;
|
||||
}
|
||||
|
||||
if ((end - start) < bootmap_size)
|
||||
break;
|
||||
|
||||
if (start < kern_base &&
|
||||
(start + bootmap_size) > kern_base) {
|
||||
start = PAGE_ALIGN(kern_base + kern_size);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (start < avoid_start &&
|
||||
(start + bootmap_size) > avoid_start) {
|
||||
start = avoid_end;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* OK, it doesn't overlap anything, use it. */
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("choose_bootmap_pfn: Using %lx [%lx]\n",
|
||||
start >> PAGE_SHIFT, start);
|
||||
#endif
|
||||
return start >> PAGE_SHIFT;
|
||||
}
|
||||
}
|
||||
|
||||
prom_printf("Cannot find free area for bootmap, aborting.\n");
|
||||
prom_halt();
|
||||
}
|
||||
|
||||
static unsigned long __init bootmem_init(unsigned long *pages_avail,
|
||||
unsigned long phys_base)
|
||||
{
|
||||
unsigned long bootmap_size, end_pfn;
|
||||
unsigned long end_of_phys_memory = 0UL;
|
||||
unsigned long bootmap_pfn, bytes_avail, size;
|
||||
int i;
|
||||
|
|
@ -813,14 +870,6 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
|||
|
||||
*pages_avail = bytes_avail >> PAGE_SHIFT;
|
||||
|
||||
/* Start with page aligned address of last symbol in kernel
|
||||
* image. The kernel is hard mapped below PAGE_OFFSET in a
|
||||
* 4MB locked TLB translation.
|
||||
*/
|
||||
start_pfn = PAGE_ALIGN(kern_base + kern_size) >> PAGE_SHIFT;
|
||||
|
||||
bootmap_pfn = start_pfn;
|
||||
|
||||
end_pfn = end_of_phys_memory >> PAGE_SHIFT;
|
||||
|
||||
#ifdef CONFIG_BLK_DEV_INITRD
|
||||
|
|
@ -837,23 +886,23 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
|||
"(0x%016lx > 0x%016lx)\ndisabling initrd\n",
|
||||
initrd_end, end_of_phys_memory);
|
||||
initrd_start = 0;
|
||||
}
|
||||
if (initrd_start) {
|
||||
if (initrd_start >= (start_pfn << PAGE_SHIFT) &&
|
||||
initrd_start < (start_pfn << PAGE_SHIFT) + 2 * PAGE_SIZE)
|
||||
bootmap_pfn = PAGE_ALIGN (initrd_end) >> PAGE_SHIFT;
|
||||
initrd_end = 0;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
/* Initialize the boot-time allocator. */
|
||||
max_pfn = max_low_pfn = end_pfn;
|
||||
min_low_pfn = pfn_base;
|
||||
min_low_pfn = (phys_base >> PAGE_SHIFT);
|
||||
|
||||
bootmap_pfn = choose_bootmap_pfn(min_low_pfn, end_pfn);
|
||||
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("init_bootmem(min[%lx], bootmap[%lx], max[%lx])\n",
|
||||
min_low_pfn, bootmap_pfn, max_low_pfn);
|
||||
#endif
|
||||
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn, pfn_base, end_pfn);
|
||||
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn,
|
||||
(phys_base >> PAGE_SHIFT),
|
||||
end_pfn);
|
||||
|
||||
/* Now register the available physical memory with the
|
||||
* allocator.
|
||||
|
|
@ -901,6 +950,20 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
|||
reserve_bootmem((bootmap_pfn << PAGE_SHIFT), size);
|
||||
*pages_avail -= PAGE_ALIGN(size) >> PAGE_SHIFT;
|
||||
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
unsigned long start_pfn, end_pfn;
|
||||
|
||||
start_pfn = pavail[i].phys_addr >> PAGE_SHIFT;
|
||||
end_pfn = (start_pfn + (pavail[i].reg_size >> PAGE_SHIFT));
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("memory_present(0, %lx, %lx)\n",
|
||||
start_pfn, end_pfn);
|
||||
#endif
|
||||
memory_present(0, start_pfn, end_pfn);
|
||||
}
|
||||
|
||||
sparse_init();
|
||||
|
||||
return end_pfn;
|
||||
}
|
||||
|
||||
|
|
@ -1180,7 +1243,7 @@ static void sun4v_pgprot_init(void);
|
|||
|
||||
void __init paging_init(void)
|
||||
{
|
||||
unsigned long end_pfn, pages_avail, shift;
|
||||
unsigned long end_pfn, pages_avail, shift, phys_base;
|
||||
unsigned long real_end, i;
|
||||
|
||||
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
|
||||
|
|
@ -1211,8 +1274,6 @@ void __init paging_init(void)
|
|||
for (i = 0; i < pavail_ents; i++)
|
||||
phys_base = min(phys_base, pavail[i].phys_addr);
|
||||
|
||||
pfn_base = phys_base >> PAGE_SHIFT;
|
||||
|
||||
set_bit(0, mmu_context_bmap);
|
||||
|
||||
shift = kern_base + PAGE_OFFSET - ((unsigned long)KERNBASE);
|
||||
|
|
@ -1248,7 +1309,9 @@ void __init paging_init(void)
|
|||
|
||||
/* Setup bootmem... */
|
||||
pages_avail = 0;
|
||||
last_valid_pfn = end_pfn = bootmem_init(&pages_avail);
|
||||
last_valid_pfn = end_pfn = bootmem_init(&pages_avail, phys_base);
|
||||
|
||||
max_mapnr = last_valid_pfn - (phys_base >> PAGE_SHIFT);
|
||||
|
||||
kernel_physical_mapping_init();
|
||||
|
||||
|
|
@ -1261,7 +1324,7 @@ void __init paging_init(void)
|
|||
for (znum = 0; znum < MAX_NR_ZONES; znum++)
|
||||
zones_size[znum] = zholes_size[znum] = 0;
|
||||
|
||||
npages = end_pfn - pfn_base;
|
||||
npages = end_pfn - (phys_base >> PAGE_SHIFT);
|
||||
zones_size[ZONE_DMA] = npages;
|
||||
zholes_size[ZONE_DMA] = npages - pages_avail;
|
||||
|
||||
|
|
@ -1336,7 +1399,6 @@ void __init mem_init(void)
|
|||
|
||||
taint_real_pages();
|
||||
|
||||
max_mapnr = last_valid_pfn - pfn_base;
|
||||
high_memory = __va(last_valid_pfn << PAGE_SHIFT);
|
||||
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
|
|
|
|||
6
include/asm-sparc64/numnodes.h
Normal file
6
include/asm-sparc64/numnodes.h
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
#ifndef _SPARC64_NUMNODES_H
|
||||
#define _SPARC64_NUMNODES_H
|
||||
|
||||
#define NODES_SHIFT 0
|
||||
|
||||
#endif /* !(_SPARC64_NUMNODES_H) */
|
||||
|
|
@ -125,17 +125,10 @@ typedef unsigned long pgprot_t;
|
|||
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
|
||||
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
|
||||
|
||||
/* PFNs are real physical page numbers. However, mem_map only begins to record
|
||||
* per-page information starting at pfn_base. This is to handle systems where
|
||||
* the first physical page in the machine is at some huge physical address,
|
||||
* such as 4GB. This is common on a partitioned E10000, for example.
|
||||
*/
|
||||
extern struct page *pfn_to_page(unsigned long pfn);
|
||||
extern unsigned long page_to_pfn(struct page *);
|
||||
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
|
||||
|
||||
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)
|
||||
|
||||
#define pfn_valid(pfn) (((pfn)-(pfn_base)) < max_mapnr)
|
||||
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
|
||||
|
||||
#define virt_to_phys __pa
|
||||
|
|
|
|||
|
|
@ -217,9 +217,6 @@ extern unsigned long pg_iobits;
|
|||
extern unsigned long _PAGE_ALL_SZ_BITS;
|
||||
extern unsigned long _PAGE_SZBITS;
|
||||
|
||||
extern unsigned long phys_base;
|
||||
extern unsigned long pfn_base;
|
||||
|
||||
extern struct page *mem_map_zero;
|
||||
#define ZERO_PAGE(vaddr) (mem_map_zero)
|
||||
|
||||
|
|
|
|||
12
include/asm-sparc64/sparsemem.h
Normal file
12
include/asm-sparc64/sparsemem.h
Normal file
|
|
@ -0,0 +1,12 @@
|
|||
#ifndef _SPARC64_SPARSEMEM_H
|
||||
#define _SPARC64_SPARSEMEM_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#define SECTION_SIZE_BITS 26
|
||||
#define MAX_PHYSADDR_BITS 42
|
||||
#define MAX_PHYSMEM_BITS 42
|
||||
|
||||
#endif /* !(__KERNEL__) */
|
||||
|
||||
#endif /* !(_SPARC64_SPARSEMEM_H) */
|
||||
Loading…
Reference in a new issue