Commit 80d6170a authored by Jesper Nilsson's avatar Jesper Nilsson
Browse files

CRIS: Update init memory handling 



- 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: default avatarJesper Nilsson <jesper.nilsson@axis.com>
parent d6517c4c

arch/cris/mm/init.c

+33 −5
Original line number Diff line number Diff line
@@ -11,13 +11,15 @@ 
#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)

void __init mem_init(void)

{

	BUG_ON(!mem_map);
@@ -31,10 +33,36 @@ mem_init(void) 
	mem_init_print_info(NULL);

}



/* free the pages occupied by initialization code */

/* Free a range of init pages. Virtual addresses. */



void 

free_initmem(void)

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