mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 23:45:31 +08:00
80d6170a28
- Add free_initrd_mem as found by Guenter Roeck <linux@roeck-us.net> - Add free_init_pages - Export empty_zero_page symbol Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/*
|
|
* linux/arch/cris/mm/init.c
|
|
*
|
|
* Copyright (C) 1995 Linus Torvalds
|
|
* Copyright (C) 2000,2001 Axis Communications AB
|
|
*
|
|
* Authors: Bjorn Wesen (bjornw@axis.com)
|
|
*
|
|
*/
|
|
|
|
#include <linux/gfp.h>
|
|
#include <linux/init.h>
|
|
#include <linux/bootmem.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/kcore.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm/sections.h>
|
|
|
|
unsigned long empty_zero_page;
|
|
EXPORT_SYMBOL(empty_zero_page);
|
|
|
|
void __init mem_init(void)
|
|
{
|
|
BUG_ON(!mem_map);
|
|
|
|
/* max/min_low_pfn was set by setup.c
|
|
* now we just copy it to some other necessary places...
|
|
*
|
|
* high_memory was also set in setup.c
|
|
*/
|
|
max_mapnr = max_low_pfn - min_low_pfn;
|
|
free_all_bootmem();
|
|
mem_init_print_info(NULL);
|
|
}
|
|
|
|
/* Free a range of init pages. Virtual addresses. */
|
|
|
|
void free_init_pages(const char *what, unsigned long begin, unsigned long end)
|
|
{
|
|
unsigned long addr;
|
|
|
|
for (addr = begin; addr < end; addr += PAGE_SIZE) {
|
|
ClearPageReserved(virt_to_page(addr));
|
|
init_page_count(virt_to_page(addr));
|
|
free_page(addr);
|
|
totalram_pages++;
|
|
}
|
|
|
|
printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
|
|
}
|
|
|
|
/* Free the pages occupied by initialization code. */
|
|
|
|
void free_initmem(void)
|
|
{
|
|
free_initmem_default(-1);
|
|
}
|
|
|
|
/* Free the pages occupied by initrd code. */
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
void free_initrd_mem(unsigned long start, unsigned long end)
|
|
{
|
|
free_init_pages("initrd memory",
|
|
start,
|
|
end);
|
|
}
|
|
#endif
|