On Thu, Jun 16, 2016 at 10:21 AM, Andy Lutomirski <[email protected]> wrote: > 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.
Correction. frv has 16KiB pages and 8KiB stacks. I'll rework it to count NR_KERNEL_STACK in KiB. Sigh. --Andy > > --Andy -- Andy Lutomirski AMA Capital Management, LLC
