(adding Dan Carpenter) On Sun, 2020-05-31 at 23:00 +0200, Christophe JAILLET wrote: > 'swsusp_header_init()' is only called via 'core_initcall'. > It can be marked as __init to save a few bytes of memory. Hey Dan smatch has a full function calling tree right? Can smatch find unmarked functions called only by __init functions so those unmarked functions can be appropriately marked with __init like the below? > --- > kernel/power/swap.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/power/swap.c b/kernel/power/swap.c > index ca0fcb5ced71..01e2858b5fe3 100644 > --- a/kernel/power/swap.c > +++ b/kernel/power/swap.c > @@ -1590,7 +1590,7 @@ int swsusp_unmark(void) > } > #endif > > -static int swsusp_header_init(void) > +static int __init swsusp_header_init(void) > { > swsusp_header = (struct swsusp_header*) __get_free_page(GFP_KERNEL); > if (!swsusp_header)