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powerpc: Move free_initmem to common code

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The free_initmem function is basically duplicated in mm/init_32,
and init_64, and is moved to the common 32/64-bit mm/mem.c.

All other sections except init were removed in v2.6.15 by
6c45ab992e (powerpc: Remove section
free() and linker script bits), and therefore the bulk of the executed
code is identical.

This patch also removes updating ppc_md.progress to NULL in the powermac
late_initcall.

Suggested-by: Milton Miller <miltonm@bga.com>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Carroll <dcarroll@astekcorp.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Dave Carroll
2011-06-18 07:36:39 +00:00
committed by Benjamin Herrenschmidt
parent 6da49a2925
commit 2773fcc8c4
4 changed files with 19 additions and 51 deletions
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19
arch/powerpc/mm/mem.c
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@ -383,6 +383,25 @@ void __init mem_init(void)
mem_init_done = 1;
}
void free_initmem(void)
{
unsigned long addr;
ppc_md.progress = NULL;
addr = (unsigned long)__init_begin;
for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
free_page(addr);
totalram_pages++;
}
pr_info("Freeing unused kernel memory: %luk freed\n",
((unsigned long)__init_end -
(unsigned long)__init_begin) >> 10);
}
#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{