linux-kernel - [PATCH v6 11/11] proc/sched: remove unused sched_time_avg

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Date:   Fri,  8 Jun 2018 14:09:54 +0200
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     peterz@...radead.org, mingo@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     rjw@...ysocki.net, juri.lelli@...hat.com, dietmar.eggemann@....com,
        Morten.Rasmussen@....com, viresh.kumar@...aro.org,
        valentin.schneider@....com, patrick.bellasi@....com,
        joel@...lfernandes.org, daniel.lezcano@...aro.org,
        quentin.perret@....com,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Ingo Molnar <mingo@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        "Luis R. Rodriguez" <mcgrof@...nel.org>
Subject: [PATCH v6 11/11] proc/sched: remove unused sched_time_avg_ms

/proc/sys/kernel/sched_time_avg_ms entry is not used anywhere.
Remove it

Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Kees Cook <keescook@...omium.org>
Cc: "Luis R. Rodriguez" <mcgrof@...nel.org>
Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>
---
 include/linux/sched/sysctl.h | 1 -
 kernel/sched/core.c          | 8 --------
 kernel/sched/sched.h         | 1 -
 kernel/sysctl.c              | 8 --------
 4 files changed, 18 deletions(-)

diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 1c1a151..913488d 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -40,7 +40,6 @@ extern unsigned int sysctl_numa_balancing_scan_size;
 #ifdef CONFIG_SCHED_DEBUG
 extern __read_mostly unsigned int sysctl_sched_migration_cost;
 extern __read_mostly unsigned int sysctl_sched_nr_migrate;
-extern __read_mostly unsigned int sysctl_sched_time_avg;
 
 int sched_proc_update_handler(struct ctl_table *table, int write,
 		void __user *buffer, size_t *length,
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 213d277..9894bc7 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -46,14 +46,6 @@ const_debug unsigned int sysctl_sched_features =
 const_debug unsigned int sysctl_sched_nr_migrate = 32;
 
 /*
- * period over which we average the RT time consumption, measured
- * in ms.
- *
- * default: 1s
- */
-const_debug unsigned int sysctl_sched_time_avg = MSEC_PER_SEC;
-
-/*
  * period over which we measure -rt task CPU usage in us.
  * default: 1s
  */
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 1faab06..6766a3c 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1706,7 +1706,6 @@ extern void deactivate_task(struct rq *rq, struct task_struct *p, int flags);
 
 extern void check_preempt_curr(struct rq *rq, struct task_struct *p, int flags);
 
-extern const_debug unsigned int sysctl_sched_time_avg;
 extern const_debug unsigned int sysctl_sched_nr_migrate;
 extern const_debug unsigned int sysctl_sched_migration_cost;
 
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 6a78cf7..d77a959 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -368,14 +368,6 @@ static struct ctl_table kern_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-	{
-		.procname	= "sched_time_avg_ms",
-		.data		= &sysctl_sched_time_avg,
-		.maxlen		= sizeof(unsigned int),
-		.mode		= 0644,
-		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &one,
-	},
 #ifdef CONFIG_SCHEDSTATS
 	{
 		.procname	= "sched_schedstats",
-- 
2.7.4