m68knommu: clean up mm/init_no.c
The memory initialization code for m68knommu has grown a bit crufty, clean it up. . remove unused declaration for die_if_kernel() . remove un-needed declaration of free_initmem() . removed unused definitions of empty_bad_page and empty_bad_page_table . removed unused DEBUG code . make free_initmem() proper prototype Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
parent
f225c86750
commit
b1ffa25925
|
@ -38,28 +38,10 @@
|
||||||
#include <asm/system.h>
|
#include <asm/system.h>
|
||||||
#include <asm/machdep.h>
|
#include <asm/machdep.h>
|
||||||
|
|
||||||
#undef DEBUG
|
|
||||||
|
|
||||||
extern void die_if_kernel(char *,struct pt_regs *,long);
|
|
||||||
extern void free_initmem(void);
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* BAD_PAGE is the page that is used for page faults when linux
|
|
||||||
* is out-of-memory. Older versions of linux just did a
|
|
||||||
* do_exit(), but using this instead means there is less risk
|
|
||||||
* for a process dying in kernel mode, possibly leaving a inode
|
|
||||||
* unused etc..
|
|
||||||
*
|
|
||||||
* BAD_PAGETABLE is the accompanying page-table: it is initialized
|
|
||||||
* to point to BAD_PAGE entries.
|
|
||||||
*
|
|
||||||
* ZERO_PAGE is a special page that is used for zero-initialized
|
* ZERO_PAGE is a special page that is used for zero-initialized
|
||||||
* data and COW.
|
* data and COW.
|
||||||
*/
|
*/
|
||||||
static unsigned long empty_bad_page_table;
|
|
||||||
|
|
||||||
static unsigned long empty_bad_page;
|
|
||||||
|
|
||||||
unsigned long empty_zero_page;
|
unsigned long empty_zero_page;
|
||||||
|
|
||||||
extern unsigned long memory_start;
|
extern unsigned long memory_start;
|
||||||
|
@ -77,22 +59,9 @@ void __init paging_init(void)
|
||||||
* Make sure start_mem is page aligned, otherwise bootmem and
|
* Make sure start_mem is page aligned, otherwise bootmem and
|
||||||
* page_alloc get different views of the world.
|
* page_alloc get different views of the world.
|
||||||
*/
|
*/
|
||||||
#ifdef DEBUG
|
|
||||||
unsigned long start_mem = PAGE_ALIGN(memory_start);
|
|
||||||
#endif
|
|
||||||
unsigned long end_mem = memory_end & PAGE_MASK;
|
unsigned long end_mem = memory_end & PAGE_MASK;
|
||||||
|
unsigned long zones_size[MAX_NR_ZONES] = {0, };
|
||||||
|
|
||||||
#ifdef DEBUG
|
|
||||||
printk (KERN_DEBUG "start_mem is %#lx\nvirtual_end is %#lx\n",
|
|
||||||
start_mem, end_mem);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Initialize the bad page table and bad page to point
|
|
||||||
* to a couple of allocated pages.
|
|
||||||
*/
|
|
||||||
empty_bad_page_table = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
|
|
||||||
empty_bad_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
|
|
||||||
empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
|
empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
|
||||||
memset((void *)empty_zero_page, 0, PAGE_SIZE);
|
memset((void *)empty_zero_page, 0, PAGE_SIZE);
|
||||||
|
|
||||||
|
@ -101,19 +70,8 @@ void __init paging_init(void)
|
||||||
*/
|
*/
|
||||||
set_fs (USER_DS);
|
set_fs (USER_DS);
|
||||||
|
|
||||||
#ifdef DEBUG
|
zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT;
|
||||||
printk (KERN_DEBUG "before free_area_init\n");
|
free_area_init(zones_size);
|
||||||
|
|
||||||
printk (KERN_DEBUG "free_area_init -> start_mem is %#lx\nvirtual_end is %#lx\n",
|
|
||||||
start_mem, end_mem);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
{
|
|
||||||
unsigned long zones_size[MAX_NR_ZONES] = {0, };
|
|
||||||
|
|
||||||
zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT;
|
|
||||||
free_area_init(zones_size);
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void __init mem_init(void)
|
void __init mem_init(void)
|
||||||
|
@ -166,8 +124,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
void
|
void free_initmem(void)
|
||||||
free_initmem()
|
|
||||||
{
|
{
|
||||||
#ifdef CONFIG_RAMKERNEL
|
#ifdef CONFIG_RAMKERNEL
|
||||||
unsigned long addr;
|
unsigned long addr;
|
||||||
|
|
Loading…
Reference in New Issue