From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-mm@kvack.org, linux-s390@vger.kernel.org
Cc: Hugh Dickins <hughd@google.com>, Mel Gorman <mgorman@suse.de>,
Jan Kara <jack@suse.cz>,
Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [PATCH] software dirty bits for s390
Date: Tue, 5 Feb 2013 10:12:04 -0800 [thread overview]
Message-ID: <1360087925-8456-2-git-send-email-schwidefsky@de.ibm.com> (raw)
In-Reply-To: <1360087925-8456-1-git-send-email-schwidefsky@de.ibm.com>
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.
The patch can now go upstream.
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
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next prev parent reply other threads:[~2013-02-05 18:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-05 18:12 Martin Schwidefsky
2013-02-05 18:12 ` Martin Schwidefsky [this message]
2013-02-05 19:28 ` Martin Schwidefsky
2013-02-05 18:12 ` [PATCH] s390/mm: implement software dirty bits Martin Schwidefsky
2013-02-06 11:21 ` Mel Gorman
2013-02-06 18:16 ` Martin Schwidefsky
2013-02-07 0:20 ` Hugh Dickins
2013-02-07 19:18 ` Martin Schwidefsky
2013-02-11 14:27 ` Martin Schwidefsky
2013-02-11 22:08 ` Hugh Dickins
2013-02-12 8:46 ` Martin Schwidefsky
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