sched: remove sysctl_sched_batch_wakeup_granularity

it's unused.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 0 insertions, 24 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6a1e7afb099b..15f05ff453d8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1551,7 +1551,6 @@ static inline void wake_up_idle_cpu(int cpu) { }
 extern unsigned int sysctl_sched_latency;
 extern unsigned int sysctl_sched_min_granularity;
 extern unsigned int sysctl_sched_wakeup_granularity;
-extern unsigned int sysctl_sched_batch_wakeup_granularity;
 extern unsigned int sysctl_sched_child_runs_first;
 extern unsigned int sysctl_sched_features;
 extern unsigned int sysctl_sched_migration_cost;
diff --git a/kernel/sched.c b/kernel/sched.c
index 770449bee6da..e813e845d9cf 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5396,7 +5396,6 @@ static inline void sched_init_granularity(void)
                 sysctl_sched_latency = limit;
 
         sysctl_sched_wakeup_granularity *= factor;
-        sysctl_sched_batch_wakeup_granularity *= factor;
 }
 
 #ifdef CONFIG_SMP
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index ef358ba07683..3d09106990cb 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -214,7 +214,6 @@ static int sched_debug_show(struct seq_file *m, void *v)
         PN(sysctl_sched_latency);
         PN(sysctl_sched_min_granularity);
         PN(sysctl_sched_wakeup_granularity);
-        PN(sysctl_sched_batch_wakeup_granularity);
         PN(sysctl_sched_child_runs_first);
         P(sysctl_sched_features);
 #undef PN
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index b01f8e77f2ac..bedda18f37a5 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -62,16 +62,6 @@ const_debug unsigned int sysctl_sched_child_runs_first = 1;
 unsigned int __read_mostly sysctl_sched_compat_yield;
 
 /*
- * SCHED_BATCH wake-up granularity.
- * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds)
- *
- * This option delays the preemption effects of decoupled workloads
- * and reduces their over-scheduling. Synchronous workloads will still
- * have immediate wakeup/sleep latencies.
- */
-unsigned int sysctl_sched_batch_wakeup_granularity = 10000000UL;
-
-/*
  * SCHED_OTHER wake-up granularity.
  * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds)
  *
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b2a2d6889bab..be332e1a0c29 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -270,17 +270,6 @@ static struct ctl_table kern_table[] = {
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
-                .procname       = "sched_batch_wakeup_granularity_ns",
-                .data           = &sysctl_sched_batch_wakeup_granularity,
-                .maxlen         = sizeof(unsigned int),
-                .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
-                .strategy       = &sysctl_intvec,
-                .extra1         = &min_wakeup_granularity_ns,
-                .extra2         = &max_wakeup_granularity_ns,
-        },
-        {
-                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "sched_child_runs_first",
                 .data           = &sysctl_sched_child_runs_first,
                 .maxlen         = sizeof(unsigned int),