diff options
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 19 |
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) { |