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Commit 0b062900 authored by Vikram Mulukutla's avatar Vikram Mulukutla Committed by Joonwoo Park
Browse files

sched: walt: add the update_task_ravg_mini trace event 



The update_task_ravg trace event takes up quite a lot of space
both in the binary ftrace format as well as when the final human
readable trace is generated. Add an event that reduces this
footprint while still retaining the most valuable information.

Change-Id: I918866ab4a01fa8c2a0c7bde51e336e4c8762b12
Signed-off-by: default avatarVikram Mulukutla <markivx@codeaurora.org>
parent 7c3a60e3

include/trace/events/sched.h

+57 −0
Original line number Diff line number Diff line
@@ -387,6 +387,63 @@ TRACE_EVENT(sched_update_task_ravg, 
		__entry->curr_top, __entry->prev_top)

);



TRACE_EVENT(sched_update_task_ravg_mini,



	TP_PROTO(struct task_struct *p, struct rq *rq, enum task_event evt,

		 u64 wallclock, u64 irqtime, u64 cycles, u64 exec_time,

		 struct group_cpu_time *cpu_time),



	TP_ARGS(p, rq, evt, wallclock, irqtime, cycles, exec_time, cpu_time),



	TP_STRUCT__entry(

		__array(	char,	comm,   TASK_COMM_LEN	)

		__field(	pid_t,	pid			)

		__field(	u64,	wallclock		)

		__field(	u64,	mark_start		)

		__field(	u64,	delta_m			)

		__field(	u64,	win_start		)

		__field(	u64,	delta			)

		__field(enum task_event,	evt		)

		__field(unsigned int,	demand			)

		__field(	 int,	cpu			)

		__field(	u64,	rq_cs			)

		__field(	u64,	rq_ps			)

		__field(	u64,	grp_cs			)

		__field(	u64,	grp_ps			)

		__field(	u32,	curr_window		)

		__field(	u32,	prev_window		)

	),



	TP_fast_assign(

		__entry->wallclock      = wallclock;

		__entry->win_start      = rq->window_start;

		__entry->delta          = (wallclock - rq->window_start);

		__entry->evt            = evt;

		__entry->cpu            = rq->cpu;

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

		__entry->pid            = p->pid;

		__entry->mark_start     = p->ravg.mark_start;

		__entry->delta_m        = (wallclock - p->ravg.mark_start);

		__entry->demand         = p->ravg.demand;

		__entry->rq_cs          = rq->curr_runnable_sum;

		__entry->rq_ps          = rq->prev_runnable_sum;

		__entry->grp_cs = cpu_time ? cpu_time->curr_runnable_sum : 0;

		__entry->grp_ps = cpu_time ? cpu_time->prev_runnable_sum : 0;

		__entry->curr_window	= p->ravg.curr_window;

		__entry->prev_window	= p->ravg.prev_window;

	),



	TP_printk("wc %llu ws %llu delta %llu event %s cpu %d task %d (%s) ms %llu delta %llu demand %u rq_cs %llu rq_ps %llu cur_window %u prev_window %u grp_cs %lld grp_ps %lld",

		__entry->wallclock, __entry->win_start, __entry->delta,

		task_event_names[__entry->evt], __entry->cpu,

		__entry->pid, __entry->comm, __entry->mark_start,

		__entry->delta_m, __entry->demand,

		__entry->rq_cs, __entry->rq_ps, __entry->curr_window,

		__entry->prev_window,

		__entry->grp_cs,

		__entry->grp_ps)

);



struct migration_sum_data;

extern const char *migrate_type_names[];

kernel/sched/walt.c

+2 −0
Original line number Diff line number Diff line
@@ -1760,6 +1760,8 @@ void update_task_ravg(struct task_struct *p, struct rq *rq, int event, 
	trace_sched_update_task_ravg(p, rq, event, wallclock, irqtime,

				     rq->cc.cycles, rq->cc.time,

				     p->grp ? &rq->grp_time : NULL);

	trace_sched_update_task_ravg_mini(p, rq, event, wallclock, irqtime,

				rq->cc.cycles, rq->cc.time, &rq->grp_time);



	p->ravg.mark_start = wallclock;

}