Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755780Ab2F1Vut (ORCPT ); Thu, 28 Jun 2012 17:50:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:31891 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755103Ab2F1Vup (ORCPT ); Thu, 28 Jun 2012 17:50:45 -0400 From: Rafael Aquini To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Rusty Russell , "Michael S. Tsirkin" , Rik van Riel , Mel Gorman , Andi Kleen , Andrew Morton , Konrad Rzeszutek Wilk , Rafael Aquini Subject: [PATCH v2 0/4] make balloon pages movable by compaction Date: Thu, 28 Jun 2012 18:49:38 -0300 Message-Id: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3532 Lines: 103 This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as changes to the core compaction & migration bits, in order to allow memory balloon pages become movable within a guest. Rafael Aquini (4): mm: introduce compaction and migration for virtio ballooned pages virtio_balloon: handle concurrent accesses to virtio_balloon struct elements virtio_balloon: introduce migration primitives to balloon pages mm: add vm event counters for balloon pages compaction drivers/virtio/virtio_balloon.c | 142 +++++++++++++++++++++++++++++++++++---- include/linux/mm.h | 16 +++++ include/linux/virtio_balloon.h | 6 ++ include/linux/vm_event_item.h | 2 + mm/compaction.c | 111 ++++++++++++++++++++++++------ mm/migrate.c | 32 ++++++++- mm/vmstat.c | 4 ++ 7 files changed, 280 insertions(+), 33 deletions(-) V2: address Mel Gorman's review comments TODO: - check on naming chages suggested by Konrad (original series discussion) Preliminary test results: (2 VCPU 1024mB RAM KVM guest running 3.5.0_rc4+) * 64mB balloon: [root@localhost ~]# awk '/compact/ {print}' /proc/vmstat compact_blocks_moved 0 compact_pages_moved 0 compact_pagemigrate_failed 0 compact_stall 0 compact_fail 0 compact_success 0 compact_balloon_migrated 0 compact_balloon_failed 0 compact_balloon_isolated 0 compact_balloon_freed 0 [root@localhost ~]# [root@localhost ~]# for i in $(seq 1 4); do echo 1> /proc/sys/vm/compact_memory & done &>/dev/null [1] Done echo > /proc/sys/vm/compact_memory [2] Done echo > /proc/sys/vm/compact_memory [3]- Done echo > /proc/sys/vm/compact_memory [4]+ Done echo > /proc/sys/vm/compact_memory [root@localhost ~]# [root@localhost ~]# awk '/compact/ {print}' /proc/vmstat compact_blocks_moved 2717 compact_pages_moved 46697 compact_pagemigrate_failed 75 compact_stall 0 compact_fail 0 compact_success 0 compact_balloon_migrated 16384 compact_balloon_failed 0 compact_balloon_isolated 16384 compact_balloon_freed 16384 * 128mB balloon: [root@localhost ~]# awk '/compact/ {print}' /proc/vmstat compact_blocks_moved 0 compact_pages_moved 0 compact_pagemigrate_failed 0 compact_stall 0 compact_fail 0 compact_success 0 compact_balloon_migrated 0 compact_balloon_failed 0 compact_balloon_isolated 0 compact_balloon_freed 0 [root@localhost ~]# [root@localhost ~]# for i in $(seq 1 4); do echo 1> /proc/sys/vm/compact_memory & done &>/dev/null [1] Done echo > /proc/sys/vm/compact_memory [2] Done echo > /proc/sys/vm/compact_memory [3]- Done echo > /proc/sys/vm/compact_memory [4]+ Done echo > /proc/sys/vm/compact_memory [root@localhost ~]# [root@localhost ~]# awk '/compact/ {print}' /proc/vmstat compact_blocks_moved 2598 compact_pages_moved 47660 compact_pagemigrate_failed 103 compact_stall 0 compact_fail 0 compact_success 0 compact_balloon_migrated 26652 compact_balloon_failed 76 compact_balloon_isolated 26728 compact_balloon_freed 26652 -- 1.7.10.2 -- 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/