From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964904AbcAZJTM (ORCPT ); Tue, 26 Jan 2016 04:19:12 -0500 Received: from e06smtp11.uk.ibm.com ([195.75.94.107]:35724 "EHLO e06smtp11.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933434AbcAZJSH (ORCPT ); Tue, 26 Jan 2016 04:18:07 -0500 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: borntraeger@de.ibm.com X-IBM-RcptTo: linux-arch@vger.kernel.org;linux-kernel@vger.kernel.org;linux-s390@vger.kernel.org From: Christian Borntraeger To: linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Christian Borntraeger Subject: [PATCH/RFC 0/3] Optimize CONFIG_DEBUG_PAGEALLOC Date: Tue, 26 Jan 2016 10:18:22 +0100 Message-Id: <1453799905-10941-1-git-send-email-borntraeger@de.ibm.com> X-Mailer: git-send-email 2.3.0 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16012609-0041-0000-0000-000007498999 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Other architecture can provide followup patches later on. 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 | 4 +++- arch/s390/mm/vmem.c | 10 ++++------ arch/x86/kernel/dumpstack.c | 4 +++- arch/x86/mm/init.c | 7 ++++--- arch/x86/mm/pageattr.c | 14 ++++---------- include/linux/mm.h | 4 ++++ 6 files changed, 22 insertions(+), 21 deletions(-) -- 2.3.0