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From d1f3667faa908a76aeb6e54f38b1e1d4b2a3ce2b Mon Sep 17 00:00:00 2001
From: Matt Fleming <matt@codeblueprint.co.uk>
Date: Wed, 19 Oct 2016 15:10:59 +0100
Subject: [PATCH 01/92] sched/fair: Kill the unused 'sched_shares_window_ns'
tunable
The last user of this tunable was removed in 2012 in commit:
82958366cfea ("sched: Replace update_shares weight distribution with per-entity computation")
Delete it since its very existence confuses people.
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161019141059.26408-1-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 3c3fcb45d524feb5d14a14f332e3eec7f2aff8f3)
Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
---
include/linux/sched/sysctl.h | 1 -
kernel/sched/fair.c | 7 -------
kernel/sysctl.c | 7 -------
3 files changed, 15 deletions(-)
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 22db1e6..4411453 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -36,7 +36,6 @@ enum sched_tunable_scaling {
extern unsigned int sysctl_sched_migration_cost;
extern unsigned int sysctl_sched_nr_migrate;
extern unsigned int sysctl_sched_time_avg;
-extern unsigned int sysctl_sched_shares_window;
int sched_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length,
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index c242944..3cf446c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -93,13 +93,6 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
-/*
- * The exponential sliding window over which load is averaged for shares
- * distribution.
- * (default: 10msec)
- */
-unsigned int __read_mostly sysctl_sched_shares_window = 10000000UL;
-
#ifdef CONFIG_CFS_BANDWIDTH
/*
* Amount of runtime to allocate from global (tg) to local (per-cfs_rq) pool
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 706309f..739fb17 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -347,13 +347,6 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write,
.mode = 0644,
.proc_handler = proc_dointvec,
},
- {
- .procname = "sched_shares_window_ns",
- .data = &sysctl_sched_shares_window,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
#ifdef CONFIG_SCHEDSTATS
{
.procname = "sched_schedstats",
--
1.9.1
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