Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754543AbaD1JNZ (ORCPT ); Mon, 28 Apr 2014 05:13:25 -0400 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:57775 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754500AbaD1JNY (ORCPT ); Mon, 28 Apr 2014 05:13:24 -0400 From: Madhavan Srinivasan To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, x86@kernel.org Cc: benh@kernel.crashing.org, paulus@samba.org, kirill.shutemov@linux.intel.com, rusty@rustcorp.com.au, akpm@linux-foundation.org, riel@redhat.com, mgorman@suse.de, ak@linux.intel.com, peterz@infradead.org, mingo@kernel.org, dave.hansen@intel.com, Madhavan Srinivasan Subject: [PATCH V3 0/2] mm: FAULT_AROUND_ORDER patchset performance data for powerpc Date: Mon, 28 Apr 2014 14:31:28 +0530 Message-Id: <1398675690-16186-1-git-send-email-maddy@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.10.4 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14042809-1618-0000-0000-00000025FE14 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Kirill A. Shutemov with 8c6e50b029 commit introduced vm_ops->map_pages() for mapping easy accessible pages around fault address in hope to reduce number of minor page faults. This patch creates infrastructure to modify the FAULT_AROUND_ORDER value using mm/Kconfig. This will enable architecture maintainers to decide on suitable FAULT_AROUND_ORDER value based on performance data for that architecture. First patch also defaults FAULT_AROUND_ORDER Kconfig element to 4. Second patch list out the performance numbers for powerpc (platform pseries) and initialize the fault around order variable for pseries platform of powerpc. V3 Changes: Replaced FAULT_AROUND_ORDER macro to a variable to support arch's that supports sub platforms. Made changes in commit messages. V2 Changes: Created Kconfig parameter for FAULT_AROUND_ORDER Added check in do_read_fault to handle FAULT_AROUND_ORDER value of 0 Made changes in commit messages. Madhavan Srinivasan (2): mm: move FAULT_AROUND_ORDER to arch/ powerpc/pseries: init fault_around_order for pseries arch/powerpc/platforms/pseries/setup.c | 5 +++++ mm/Kconfig | 8 ++++++++ mm/memory.c | 11 ++++------- 3 files changed, 17 insertions(+), 7 deletions(-) -- 1.7.10.4 -- 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/