On Tue, Jan 26, 2021 at 07:14:20PM +0100, David Hildenbrand wrote: > The existing code is essentially > free_initmem_default()->free_reserved_area() without poisoning. > > Note that existing code missed to update the managed page count of the > zone. > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Guo Ren <guoren@xxxxxxxxxx> > Cc: Mike Rapoport <rppt@xxxxxxxxxx> > Cc: Oscar Salvador <osalvador@xxxxxxx> > Cc: Michal Hocko <mhocko@xxxxxxxxxx> > Cc: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> > Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> > --- > > Not compile tested as documentation on how to get > https://gitlab.com/c-sky/buildroot > running, especially with a custom kernel, is a bit sparse. You can pick a cross-compiler from here: https://mirrors.edge.kernel.org/pub/tools/crosstool/ > --- > arch/csky/mm/init.c | 17 +---------------- > 1 file changed, 1 insertion(+), 16 deletions(-) > > diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c > index 81e4e5e78f38..894050a8ce09 100644 > --- a/arch/csky/mm/init.c > +++ b/arch/csky/mm/init.c > @@ -110,24 +110,9 @@ void __init mem_init(void) > mem_init_print_info(NULL); > } > > -extern char __init_begin[], __init_end[]; > - > void free_initmem(void) > { > - unsigned long addr; > - > - addr = (unsigned long) &__init_begin; > - > - while (addr < (unsigned long) &__init_end) { > - ClearPageReserved(virt_to_page(addr)); > - init_page_count(virt_to_page(addr)); > - free_page(addr); > - totalram_pages_inc(); > - addr += PAGE_SIZE; > - } > - > - pr_info("Freeing unused kernel memory: %dk freed\n", > - ((unsigned int)&__init_end - (unsigned int)&__init_begin) >> 10); > + free_initmem_default(-1); > } > > void pgd_init(unsigned long *p) > -- > 2.29.2 > -- Sincerely yours, Mike.
