From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f70.google.com (mail-pa0-f70.google.com [209.85.220.70]) by kanga.kvack.org (Postfix) with ESMTP id 7E3BA6B0005 for ; Sat, 2 Jul 2016 12:17:30 -0400 (EDT) Received: by mail-pa0-f70.google.com with SMTP id ts6so263810635pac.1 for ; Sat, 02 Jul 2016 09:17:30 -0700 (PDT) Received: from mail-pf0-x243.google.com (mail-pf0-x243.google.com. [2607:f8b0:400e:c00::243]) by mx.google.com with ESMTPS id e72si4995199pfd.241.2016.07.02.09.17.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 02 Jul 2016 09:17:29 -0700 (PDT) Received: by mail-pf0-x243.google.com with SMTP id c74so12583878pfb.0 for ; Sat, 02 Jul 2016 09:17:28 -0700 (PDT) From: Sergey Senozhatsky Subject: [PATCH 0/3][RFC] mm/page:_owner: track page free call chain Date: Sun, 3 Jul 2016 01:16:53 +0900 Message-Id: <20160702161656.14071-1-sergey.senozhatsky@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Joonsoo Kim Cc: Andrew Morton , Vlastimil Babka , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky , Sergey Senozhatsky Hello, RFC Page owner tracks a call chain that has allocated a page, this patch set extends it with a PAGE_OWNER_TRACK_FREE functionality, that now also tracks a call chain that has freed the page. Page dump, thus, now has the following format: a) page allocated backtrace b) page free backtrace c) backtrace of path that has trigger bad page For a quick example of a case when this new b) part can make a difference please see 0003. Sergey Senozhatsky (3): mm/page_owner: rename page_owner functions mm/page_owner: rename PAGE_EXT_OWNER flag mm/page_owner: track page free call chain include/linux/page_ext.h | 15 ++++++- include/linux/page_owner.h | 16 +++---- lib/Kconfig.debug | 10 +++++ mm/page_alloc.c | 4 +- mm/page_owner.c | 110 +++++++++++++++++++++++++++++++-------------- mm/vmstat.c | 5 ++- 6 files changed, 113 insertions(+), 47 deletions(-) -- 2.9.0.37.g6d523a3 -- 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