From mboxrd@z Thu Jan 1 00:00:00 1970 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> Return-path: Sender: owner-linux-mm@kvack.org 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 List-Id: linux-arch.vger.kernel.org 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e06smtp14.uk.ibm.com ([195.75.94.110]:37213 "EHLO e06smtp14.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932164AbcA0KJo (ORCPT ); Wed, 27 Jan 2016 05:09:44 -0500 Received: from localhost by e06smtp14.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 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: linux-arch-owner@vger.kernel.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 Message-ID: <20160127100958.dFD5zxDi2Lt_ioxTyVNkM8ataiG7gUFiTG5vgm2dv7I@z> 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