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Commit 41b41665 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

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: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent fbfa7b35

Documentation/scheduler/sched-hmp.txt

+1 −1
Original line number Diff line number Diff line
@@ -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

kernel/sched/hmp.c

+2 −2
Original line number Diff line number Diff line
@@ -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

kernel/sysctl.c

+0 −7
Original line number Diff line number Diff line
@@ -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,