From: Wanpeng Li Date: Thu, 12 Dec 2013 07:23:23 +0000 (+0800) Subject: sched/numa: Drop sysctl_numa_balancing_settle_count sysctl X-Git-Tag: upstream/snapshot3+hdmi~3648^2~50 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1bd53a7efdc988163ec4c25f656df38dbe500632;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git sched/numa: Drop sysctl_numa_balancing_settle_count sysctl commit 887c290e (sched/numa: Decide whether to favour task or group weights based on swap candidate relationships) drop the check against sysctl_numa_balancing_settle_count, this patch remove the sysctl. Signed-off-by: Wanpeng Li Acked-by: Mel Gorman Reviewed-by: Rik van Riel Acked-by: David Rientjes Signed-off-by: Peter Zijlstra Cc: Andrew Morton Cc: Naoya Horiguchi Link: http://lkml.kernel.org/r/1386833006-6600-1-git-send-email-liwanp@linux.vnet.ibm.com Signed-off-by: Ingo Molnar --- diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 26b7ee4..6d48640 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -428,11 +428,6 @@ rate for each task. numa_balancing_scan_size_mb is how many megabytes worth of pages are scanned for a given scan. -numa_balancing_settle_count is how many scan periods must complete before -the schedule balancer stops pushing the task towards a preferred node. This -gives the scheduler a chance to place the task on an alternative node if the -preferred node is overloaded. - numa_balancing_migrate_deferred is how many page migrations get skipped unconditionally, after a page migration is skipped because a page is shared with other tasks. This reduces page migration overhead, and determines diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index 41467f8..31e0193 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -48,7 +48,6 @@ extern unsigned int sysctl_numa_balancing_scan_delay; extern unsigned int sysctl_numa_balancing_scan_period_min; extern unsigned int sysctl_numa_balancing_scan_period_max; extern unsigned int sysctl_numa_balancing_scan_size; -extern unsigned int sysctl_numa_balancing_settle_count; #ifdef CONFIG_SCHED_DEBUG extern unsigned int sysctl_sched_migration_cost; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index a9185f7..fcb6c17 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -872,15 +872,6 @@ static unsigned int task_scan_max(struct task_struct *p) return max(smin, smax); } -/* - * Once a preferred node is selected the scheduler balancer will prefer moving - * a task to that node for sysctl_numa_balancing_settle_count number of PTE - * scans. This will give the process the chance to accumulate more faults on - * the preferred node but still allow the scheduler to move the task again if - * the nodes CPUs are overloaded. - */ -unsigned int sysctl_numa_balancing_settle_count __read_mostly = 4; - static void account_numa_enqueue(struct rq *rq, struct task_struct *p) { rq->nr_numa_running += (p->numa_preferred_nid != -1); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 34a6047..c8da99f 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -385,13 +385,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, { - .procname = "numa_balancing_settle_count", - .data = &sysctl_numa_balancing_settle_count, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { .procname = "numa_balancing_migrate_deferred", .data = &sysctl_numa_balancing_migrate_deferred, .maxlen = sizeof(unsigned int),