From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f51.google.com (mail-wm0-f51.google.com [74.125.82.51]) by kanga.kvack.org (Postfix) with ESMTP id 8D11A6B0009 for ; Wed, 27 Jan 2016 05:09:44 -0500 (EST) Received: by mail-wm0-f51.google.com with SMTP id 123so144485134wmz.0 for ; Wed, 27 Jan 2016 02:09:44 -0800 (PST) Received: from e06smtp16.uk.ibm.com (e06smtp16.uk.ibm.com. [195.75.94.112]) by mx.google.com with ESMTPS id 78si10062940wmv.119.2016.01.27.02.09.43 for (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 27 Jan 2016 02:09:43 -0800 (PST) Received: from localhost by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 27 Jan 2016 10:09:42 -0000 Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id 038581B08076 for ; Wed, 27 Jan 2016 10:09:47 +0000 (GMT) Received: from d06av09.portsmouth.uk.ibm.com (d06av09.portsmouth.uk.ibm.com [9.149.37.250]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0RA9dLl2884028 for ; Wed, 27 Jan 2016 10:09:39 GMT Received: from d06av09.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av09.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0RA9cIB008387 for ; Wed, 27 Jan 2016 03:09:39 -0700 From: Christian Borntraeger Subject: [PATCH v3 0/3] Optimize CONFIG_DEBUG_PAGEALLOC Date: Wed, 27 Jan 2016 11:09:58 +0100 Message-Id: <1453889401-43496-1-git-send-email-borntraeger@de.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net, Joonsoo Kim , davej@codemonkey.org.uk, Christian Borntraeger Andrew, since the arch patches depend on the base patch, maybe the mm tree is the right one? I have acks/reviews for the s390/x86 part. As CONFIG_DEBUG_PAGEALLOC can be enabled/disabled via kernel parameters we can optimize some cases by checking the enablement state. I have done s390 and x86 as examples. s390 should be ok, I tested several combinations, x86 seems to work as well. Power can probably do the same, Michael/Ben? I am not sure about sparc. Sparc seems to allocate the TSB buffer really early. David? V2->V3: - Fix whitespace/indent breakage in s390 patch V1->V2: - replace DEBUG_PAGEALLOC(disabled/enabled) with DEBUG_PAGEALLOC dump_stack for s390/x86 - add /* CONFIG_DEBUG_PAGEALLOC */ to else and endif Christian Borntraeger (3): mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC x86: query dynamic DEBUG_PAGEALLOC setting s390: query dynamic DEBUG_PAGEALLOC setting arch/s390/kernel/dumpstack.c | 6 +++--- arch/s390/mm/vmem.c | 10 ++++------ arch/x86/kernel/dumpstack.c | 5 ++--- arch/x86/mm/init.c | 7 ++++--- arch/x86/mm/pageattr.c | 14 ++++---------- include/linux/mm.h | 9 +++++++-- 6 files changed, 24 insertions(+), 27 deletions(-) -- 2.3.0 -- 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