Re: [PATCH 04/13] mm: Track NR_KERNEL_STACK in pages instead of number of stacks
From: Andy Lutomirski <luto@amacapital.net>
Date: 2016-06-16 17:21:48
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On Thu, Jun 16, 2016 at 4:10 AM, Vladimir Davydov [off-list ref] wrote:
On Wed, Jun 15, 2016 at 05:28:26PM -0700, Andy Lutomirski wrote: ...quoted
@@ -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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>