From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f181.google.com (mail-qk0-f181.google.com [209.85.220.181]) by kanga.kvack.org (Postfix) with ESMTP id 979CA6B025D for ; Thu, 23 Jul 2015 17:54:43 -0400 (EDT) Received: by qkdv3 with SMTP id v3so3814180qkd.3 for ; Thu, 23 Jul 2015 14:54:43 -0700 (PDT) Received: from mail.catern.com (catern.com. [104.131.201.120]) by mx.google.com with ESMTPS id k14si7471108qhk.127.2015.07.23.14.54.42 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Jul 2015 14:54:42 -0700 (PDT) From: Spencer Baugh Subject: [PATCH] hugetlb: cond_resched for set_max_huge_pages and follow_hugetlb_page Date: Thu, 23 Jul 2015 14:54:31 -0700 Message-Id: <1437688476-3399-1-git-send-email-sbaugh@catern.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Naoya Horiguchi , David Rientjes , Davidlohr Bueso , Mike Kravetz , Luiz Capitulino , "open list:MEMORY MANAGEMENT" , open list Cc: Joern Engel , Spencer Baugh , Joern Engel , Spencer Baugh From: Joern Engel ~150ms scheduler latency for both observed in the wild. Signed-off-by: Joern Engel Signed-off-by: Spencer Baugh --- mm/hugetlb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index a8c3087..2eb6919 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1836,6 +1836,7 @@ static unsigned long set_max_huge_pages(struct hstate *h, unsigned long count, ret = alloc_fresh_gigantic_page(h, nodes_allowed); else ret = alloc_fresh_huge_page(h, nodes_allowed); + cond_resched(); spin_lock(&hugetlb_lock); if (!ret) goto out; @@ -3521,6 +3522,7 @@ long follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma, spin_unlock(ptl); ret = hugetlb_fault(mm, vma, vaddr, (flags & FOLL_WRITE) ? FAULT_FLAG_WRITE : 0); + cond_resched(); if (!(ret & VM_FAULT_ERROR)) continue; -- 2.5.0.rc3 -- 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: email@kvack.org