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Commit e309c5e8 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "sched/fair: Add sched_compute_energy trace point"

parents 6bcea930 88aaac7a

include/trace/events/sched.h

+41 −0
Original line number Diff line number Diff line
@@ -1160,6 +1160,47 @@ TRACE_EVENT(sched_cpu_util, 
		__entry->isolated, __entry->reserved, __entry->high_irq_load)

);



TRACE_EVENT(sched_compute_energy,



	TP_PROTO(struct task_struct *p, int eval_cpu,

		unsigned long eval_energy,

		unsigned long prev_energy,

		unsigned long best_energy,

		unsigned long best_energy_cpu),



	TP_ARGS(p, eval_cpu, eval_energy, prev_energy, best_energy,

		best_energy_cpu),



	TP_STRUCT__entry(

		__field(int,		pid)

		__array(char,		comm, TASK_COMM_LEN)

		__field(unsigned long,	util)

		__field(int,		prev_cpu)

		__field(unsigned long,	prev_energy)

		__field(int,		eval_cpu)

		__field(unsigned long,	eval_energy)

		__field(int,		best_energy_cpu)

		__field(unsigned long,	best_energy)

	),



	TP_fast_assign(

		__entry->pid                    = p->pid;

		memcpy(__entry->comm, p->comm, TASK_COMM_LEN);

		__entry->util                   = task_util(p);

		__entry->prev_cpu               = task_cpu(p);

		__entry->prev_energy	        = prev_energy;

		__entry->eval_cpu	        = eval_cpu;

		__entry->eval_energy	        = eval_energy;

		__entry->best_energy_cpu	= best_energy_cpu;

		__entry->best_energy	        = best_energy;

	),



	TP_printk("pid=%d comm=%s util=%lu prev_cpu=%d prev_energy=%llu eval_cpu=%d eval_energy=%llu best_energy_cpu=%d best_energy=%llu",

		__entry->pid, __entry->comm, __entry->util, __entry->prev_cpu,

		__entry->prev_energy, __entry->eval_cpu, __entry->eval_energy,

		__entry->best_energy_cpu, __entry->best_energy)

)



TRACE_EVENT(sched_task_util,



	TP_PROTO(struct task_struct *p, int best_energy_cpu,

kernel/sched/fair.c

+2 −0
Original line number Diff line number Diff line
@@ -7478,6 +7478,8 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu, int sy 
		if (cpu == prev_cpu)

			continue;

		cur_energy = compute_energy(p, cpu, pd);

		trace_sched_compute_energy(p, cpu, cur_energy, prev_energy,

					   best_energy, best_energy_cpu);

		if (cur_energy < best_energy) {

			best_energy = cur_energy;

			best_energy_cpu = cpu;