On Thu, Jun 16, 2016 at 4:10 AM, Vladimir Davydov <[email protected]> wrote: > On Wed, Jun 15, 2016 at 05:28:26PM -0700, Andy Lutomirski wrote: > ... >> @@ -225,7 +225,8 @@ static void account_kernel_stack(struct thread_info *ti, >> int account) >> { >> struct zone *zone = page_zone(virt_to_page(ti)); >> >> - mod_zone_page_state(zone, NR_KERNEL_STACK, account); >> + mod_zone_page_state(zone, NR_KERNEL_STACK, >> + THREAD_SIZE / PAGE_SIZE * account); > > It won't work if THREAD_SIZE < PAGE_SIZE. Is there an arch with such a > thread size, anyway? If no, we should probably drop thread_info_cache.
On a quick grep, I can't find any. I'll add a BUILD_BUG_ON for now. --Andy
