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Commit 0249e580 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "sched/walt: Improve the scheduler"

parents ca8993b2 0fe8be62

drivers/android/binder.c

+7 −4
Original line number Diff line number Diff line
@@ -965,7 +965,8 @@ static void binder_wakeup_poll_threads_ilocked(struct binder_proc *proc, 
			if (thread->task && current->signal &&

				(current->signal->oom_score_adj == 0) &&

				(current->prio < DEFAULT_PRIO))

				thread->task->wts.low_latency = true;

				thread->task->wts.low_latency |=

						WALT_LOW_LATENCY_BINDER;

#endif

			if (sync)

				wake_up_interruptible_sync(&thread->wait);
@@ -1030,7 +1031,8 @@ static void binder_wakeup_thread_ilocked(struct binder_proc *proc, 
		if (thread->task && current->signal &&

			(current->signal->oom_score_adj == 0) &&

			(current->prio < DEFAULT_PRIO))

			thread->task->wts.low_latency = true;

			thread->task->wts.low_latency |=

					WALT_LOW_LATENCY_BINDER;

#endif

		if (sync)

			wake_up_interruptible_sync(&thread->wait);
@@ -4690,8 +4692,9 @@ static int binder_thread_read(struct binder_proc *proc, 


		trace_binder_transaction_received(t);

#ifdef CONFIG_SCHED_WALT

		if (current->wts.low_latency)

			current->wts.low_latency = false;

		if (current->wts.low_latency & WALT_LOW_LATENCY_BINDER)

			thread->task->wts.low_latency &=

						~WALT_LOW_LATENCY_BINDER;

#endif

		binder_stat_br(proc, thread, cmd);

		binder_debug(BINDER_DEBUG_TRANSACTION,

fs/proc/base.c

+5 −2
Original line number Diff line number Diff line
@@ -1497,7 +1497,7 @@ static int sched_low_latency_show(struct seq_file *m, void *v) 
	if (!p)

		return -ESRCH;



	low_latency = p->wts.low_latency;

	low_latency = p->wts.low_latency & WALT_LOW_LATENCY_PROCFS;

	seq_printf(m, "%d\n", low_latency);



	put_task_struct(p);
@@ -1520,7 +1520,10 @@ sched_low_latency_write(struct file *file, const char __user *buf, 
	if (err)

		goto out;



	p->wts.low_latency = low_latency;

	if (low_latency)

		p->wts.low_latency |= WALT_LOW_LATENCY_PROCFS;

	else

		p->wts.low_latency &= ~WALT_LOW_LATENCY_PROCFS;

out:

	put_task_struct(p);

	return err < 0 ? err : count;

include/linux/sched.h

+4 −1
Original line number Diff line number Diff line
@@ -562,6 +562,9 @@ extern void walt_update_cluster_topology(void); 
#define RAVG_HIST_SIZE_MAX  5

#define NUM_BUSY_BUCKETS 10



#define WALT_LOW_LATENCY_PROCFS	BIT(0)

#define WALT_LOW_LATENCY_BINDER	BIT(1)



struct walt_task_struct {

	/*

	 * 'mark_start' marks the beginning of an event (task waking up, task
@@ -611,7 +614,7 @@ struct walt_task_struct { 
	bool				wake_up_idle;

	bool				misfit;

	bool				rtg_high_prio;

	bool				low_latency;

	u8				low_latency;

	u64				boost_period;

	u64				boost_expires;

	u64				last_sleep_ts;

kernel/sched/sched.h

+1 −0
Original line number Diff line number Diff line
@@ -3004,6 +3004,7 @@ static inline struct walt_related_thread_group 
	return rcu_dereference(p->wts.grp);

}



/* applying the task threshold for all types of low latency tasks. */

static inline bool walt_low_latency_task(struct task_struct *p)

{

	return p->wts.low_latency &&