From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760732AbYFEBVX (ORCPT ); Wed, 4 Jun 2008 21:21:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752324AbYFEBVO (ORCPT ); Wed, 4 Jun 2008 21:21:14 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:41359 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752050AbYFEBVN (ORCPT ); Wed, 4 Jun 2008 21:21:13 -0400 Message-Id: <20080605021505.694195095@jp.fujitsu.com> References: <20080605021211.871673550@jp.fujitsu.com> User-Agent: quilt/0.46-1 Date: Thu, 05 Jun 2008 11:12:16 +0900 From: kosaki.motohiro@jp.fujitsu.com To: LKML , linux-mm , Andrew Morton Cc: kosaki.motohiro@jp.fujitsu.com Subject: [PATCH 5/5] introduce sysctl of throttle Content-Disposition: inline; filename=05-reclaim-throttle-sysctl-v7.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org introduce sysctl parameter of max task of throttle. # echo 5 > /proc/sys/vm/max_nr_task_per_zone Signed-off-by: KOSAKI Motohiro --- include/linux/swap.h | 2 ++ kernel/sysctl.c | 9 +++++++++ mm/vmscan.c | 4 +++- 3 files changed, 14 insertions(+), 1 deletion(-) Index: b/mm/vmscan.c =================================================================== --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -125,9 +125,11 @@ struct scan_control { int vm_swappiness = 60; long vm_total_pages; /* The total number of pages which the VM controls */ -#define MAX_RECLAIM_TASKS CONFIG_NR_MAX_RECLAIM_TASKS_PER_ZONE +#define MAX_RECLAIM_TASKS vm_max_nr_task_per_zone static LIST_HEAD(shrinker_list); static DECLARE_RWSEM(shrinker_rwsem); +int vm_max_nr_task_per_zone __read_mostly + = CONFIG_NR_MAX_RECLAIM_TASKS_PER_ZONE; #ifdef CONFIG_CGROUP_MEM_RES_CTLR #define scan_global_lru(sc) (!(sc)->mem_cgroup) Index: b/include/linux/swap.h =================================================================== --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -206,6 +206,8 @@ static inline int zone_reclaim(struct zo extern int kswapd_run(int nid); +extern int vm_max_nr_task_per_zone; + #ifdef CONFIG_MMU /* linux/mm/shmem.c */ extern int shmem_unuse(swp_entry_t entry, struct page *page); Index: b/kernel/sysctl.c =================================================================== --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1151,6 +1151,15 @@ static struct ctl_table vm_table[] = { .extra2 = &one, }, #endif + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_nr_task_per_zone", + .data = &vm_max_nr_task_per_zone, + .maxlen = sizeof(vm_max_nr_task_per_zone), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + }, /* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt --