From 41b41665facf782ebe70ab33468024d5f776f803 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Wed, 8 Feb 2017 09:33:22 +0530 Subject: [PATCH] sched: remove sched_new_task_windows tunable The sched_new_task_windows tunable is set to 5 in the scheduler and it is not changed from user space. Remove this unused tunable. Change-Id: I771e12b44876efe75ce87a90e4e9d69c22168b64 Signed-off-by: Pavankumar Kondeti --- Documentation/scheduler/sched-hmp.txt | 2 +- kernel/sched/hmp.c | 4 ++-- kernel/sysctl.c | 7 ------- 3 files changed, 3 insertions(+), 10 deletions(-) diff --git a/Documentation/scheduler/sched-hmp.txt b/Documentation/scheduler/sched-hmp.txt index 09b7dc1977ec..f485dc85c03e 100644 --- a/Documentation/scheduler/sched-hmp.txt +++ b/Documentation/scheduler/sched-hmp.txt @@ -910,7 +910,7 @@ returns prev_runnable_sum, scaled to the efficiency and fmax of given CPU. The same applies to nt_curr_runnable_sum and nt_prev_runnable_sum. A 'new' task is defined as a task whose number of active windows since fork is -less than sysctl_sched_new_task_windows. An active window is defined as a window +less than SCHED_NEW_TASK_WINDOWS. An active window is defined as a window where a task was observed to be runnable. *** 6.2 Per-task window-based stats diff --git a/kernel/sched/hmp.c b/kernel/sched/hmp.c index 1de1fb1dc415..0fbee2961a45 100644 --- a/kernel/sched/hmp.c +++ b/kernel/sched/hmp.c @@ -711,7 +711,7 @@ __read_mostly unsigned int sysctl_sched_cpu_high_irqload = (10 * NSEC_PER_MSEC); unsigned int __read_mostly sysctl_sched_enable_thread_grouping; -__read_mostly unsigned int sysctl_sched_new_task_windows = 5; +#define SCHED_NEW_TASK_WINDOWS 5 #define SCHED_FREQ_ACCOUNT_WAIT_TIME 0 @@ -1842,7 +1842,7 @@ static int account_busy_for_cpu_time(struct rq *rq, struct task_struct *p, static inline bool is_new_task(struct task_struct *p) { - return p->ravg.active_windows < sysctl_sched_new_task_windows; + return p->ravg.active_windows < SCHED_NEW_TASK_WINDOWS; } #define INC_STEP 8 diff --git a/kernel/sysctl.c b/kernel/sysctl.c index d2a397f7331a..f55a02b96775 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -450,13 +450,6 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, - { - .procname = "sched_new_task_windows", - .data = &sysctl_sched_new_task_windows, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = sched_window_update_handler, - }, { .procname = "sched_pred_alert_freq", .data = &sysctl_sched_pred_alert_freq,