From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx159.postini.com [74.125.245.159]) by kanga.kvack.org (Postfix) with SMTP id 682D26B0002 for ; Tue, 5 Feb 2013 13:12:13 -0500 (EST) Received: from /spool/local by e06smtp17.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 5 Feb 2013 18:10:56 -0000 Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps3074.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r15IC19e27459744 for ; Tue, 5 Feb 2013 18:12:01 GMT Received: from d06av05.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r15IC97H002070 for ; Tue, 5 Feb 2013 11:12:10 -0700 From: Martin Schwidefsky Subject: [PATCH] software dirty bits for s390 Date: Tue, 5 Feb 2013 10:12:03 -0800 Message-Id: <1360087925-8456-1-git-send-email-schwidefsky@de.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-s390@vger.kernel.org Cc: Hugh Dickins , Mel Gorman , Jan Kara , Christian Ehrhardt , Martin Schwidefsky Greetings, good news, I got performance results for a selected set of workloads with my software dirty bit patch (thanks Christian!). We found no downsides to the software dirty bits, and a substantial improvement in CPU utilization for the FIO test with mostly read mappings. All good, the patch can now go upstream. The patch changes common memory management code but the parts that are removed are purely s390 specific. I can handle it via the linux-s390 tree but I would not mind if it gets the sign-off by the mm folks. Martin Schwidefsky (1): s390/mm: implement software dirty bits arch/s390/include/asm/page.h | 22 ------- arch/s390/include/asm/pgtable.h | 131 ++++++++++++++++++++++++++------------- arch/s390/include/asm/sclp.h | 1 - arch/s390/include/asm/setup.h | 16 ++--- arch/s390/kvm/kvm-s390.c | 2 +- arch/s390/lib/uaccess_pt.c | 2 +- arch/s390/mm/pageattr.c | 2 +- arch/s390/mm/vmem.c | 24 +++---- drivers/s390/char/sclp_cmd.c | 10 +-- include/asm-generic/pgtable.h | 10 --- include/linux/page-flags.h | 8 --- mm/rmap.c | 24 ------- 12 files changed, 112 insertions(+), 140 deletions(-) -- 1.7.9.5 -- 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