aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/mm/mem.c
diff options
context:
space:
mode:
authorDave Carroll <dcarroll@astekcorp.com>2011-06-18 07:36:39 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-06-30 15:28:05 +1000
commit2773fcc8c48b947c997ff345f3e453917883cdb5 (patch)
treed0b526f25efa465236bce0ab31c3e89dc79a1462 /arch/powerpc/mm/mem.c
parent6da49a292534d31ca391928ea97f8225774dc1e0 (diff)
powerpc: Move free_initmem to common code
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 6c45ab992e4299c869fb26427944a8f8ea177024 (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>
Diffstat (limited to 'arch/powerpc/mm/mem.c')
-rw-r--r--arch/powerpc/mm/mem.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 89cbfef5a7d..e9379ce6f3b 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -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)
{