Thx Mike, It's under test: https://gitlab.com/c-sky/buildroot/-/pipelines/247353584 kernel: https://github.com/c-sky/csky-linux/commit/9d986b01feb991ded3fb8c1f8153a0c80ea84b9c On Wed, Jan 27, 2021 at 2:26 AM Mike Rapoport <rppt@xxxxxxxxxx> wrote: > > 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. -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
