diff options
| author | Robert Reif <reif@earthlink.net> | 2008-09-04 03:29:42 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-09-04 03:29:42 +0400 |
| commit | 1aa0365f275f7df6bb1e0b6667ed2b54199fe21d (patch) | |
| tree | c39db4e1bb2297806a7a09c4149dd149f310b77e | |
| parent | 94d5b5432b96efa69840b397853cf2cb81ab4fab (diff) | |
| download | linux-1aa0365f275f7df6bb1e0b6667ed2b54199fe21d.tar.xz | |
sparc32: add init memory poisoning
This patch adds init memory poisoning. It looks like
totalram_pages was not updated properly in free_initrd_mem
so I fixed that as well.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/mm/init.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c index e103f1bb3777..677c1e187a23 100644 --- a/arch/sparc/mm/init.c +++ b/arch/sparc/mm/init.c @@ -23,6 +23,7 @@ #include <linux/highmem.h> #include <linux/bootmem.h> #include <linux/pagemap.h> +#include <linux/poison.h> #include <asm/system.h> #include <asm/vac-ops.h> @@ -480,6 +481,7 @@ void free_initmem (void) for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) { struct page *p; + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); p = virt_to_page(addr); ClearPageReserved(p); @@ -488,20 +490,26 @@ void free_initmem (void) totalram_pages++; num_physpages++; } - printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", (&__init_end - &__init_begin) >> 10); + printk(KERN_INFO "Freeing unused kernel memory: %dk freed\n", + (&__init_end - &__init_begin) >> 10); } #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { if (start < end) - printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10); + printk(KERN_INFO "Freeing initrd memory: %ldk freed\n", + (end - start) >> 10); for (; start < end; start += PAGE_SIZE) { - struct page *p = virt_to_page(start); + struct page *p; + + memset((void *)start, POISON_FREE_INITMEM, PAGE_SIZE); + p = virt_to_page(start); ClearPageReserved(p); init_page_count(p); __free_page(p); + totalram_pages++; num_physpages++; } } |