Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932853Ab2HVPJh (ORCPT ); Wed, 22 Aug 2012 11:09:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47645 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753705Ab2HVPA0 (ORCPT ); Wed, 22 Aug 2012 11:00:26 -0400 From: Andrea Arcangeli To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Hillf Danton , Dan Smith , Linus Torvalds , Andrew Morton , Thomas Gleixner , Ingo Molnar , Paul Turner , Suresh Siddha , Mike Galbraith , "Paul E. McKenney" , Lai Jiangshan , Bharata B Rao , Lee Schermerhorn , Rik van Riel , Johannes Weiner , Srivatsa Vaddagiri , Christoph Lameter , Alex Shi , Mauricio Faria de Oliveira , Konrad Rzeszutek Wilk , Don Morris , Benjamin Herrenschmidt Subject: [PATCH 30/36] autonuma: bugcheck page_autonuma fields on newly allocated pages Date: Wed, 22 Aug 2012 16:59:14 +0200 Message-Id: <1345647560-30387-31-git-send-email-aarcange@redhat.com> In-Reply-To: <1345647560-30387-1-git-send-email-aarcange@redhat.com> References: <1345647560-30387-1-git-send-email-aarcange@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2023 Lines: 64 Debug tweak. Signed-off-by: Andrea Arcangeli --- include/linux/autonuma.h | 19 +++++++++++++++++++ mm/page_alloc.c | 3 ++- 2 files changed, 21 insertions(+), 1 deletions(-) diff --git a/include/linux/autonuma.h b/include/linux/autonuma.h index 1d87ecc..8a779e0 100644 --- a/include/linux/autonuma.h +++ b/include/linux/autonuma.h @@ -29,6 +29,24 @@ static inline void autonuma_free_page(struct page *page) } } +static inline int autonuma_check_new_page(struct page *page) +{ + struct page_autonuma *page_autonuma; + int ret = 0; + if (autonuma_possible()) { + page_autonuma = lookup_page_autonuma(page); + if (unlikely(page_autonuma->autonuma_migrate_nid != -1)) { + ret = 1; + WARN_ON(1); + } + if (unlikely(page_autonuma->autonuma_last_nid != -1)) { + ret = 1; + WARN_ON(1); + } + } + return ret; +} + #define autonuma_printk(format, args...) \ if (autonuma_debug()) printk(format, ##args) @@ -41,6 +59,7 @@ static inline void autonuma_migrate_split_huge_page(struct page *page, struct page *page_tail) {} static inline void autonuma_setup_new_exec(struct task_struct *p) {} static inline void autonuma_free_page(struct page *page) {} +static inline int autonuma_check_new_page(struct page *page) { return 0; } #endif /* CONFIG_AUTONUMA */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 74b73fa..87a4d5b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -833,7 +833,8 @@ static inline int check_new_page(struct page *page) (page->mapping != NULL) | (__page_count(page) != 0) | (page->flags & PAGE_FLAGS_CHECK_AT_PREP) | - (mem_cgroup_bad_page_check(page)))) { + (mem_cgroup_bad_page_check(page)) | + autonuma_check_new_page(page))) { bad_page(page); return 1; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/