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Commit f9e96dfc authored by Puja Gupta's avatar Puja Gupta Committed by Pavankumar Kondeti
Browse files

sched: Update tracepoint to include task info 



Update sched_get_task_cpu_cycles trace to include pid and name of the
task to help with debug better.

Change-Id: Ic307ebcf0a44c94bf0a2aa1a02b8aeff39010b29
Signed-off-by: default avatarPuja Gupta <pujag@codeaurora.org>
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 6e92713c

include/trace/events/sched.h

+8 −4
Original line number Diff line number Diff line
@@ -436,9 +436,9 @@ TRACE_EVENT(sched_update_task_ravg, 


TRACE_EVENT(sched_get_task_cpu_cycles,



	TP_PROTO(int cpu, int event, u64 cycles, u64 exec_time),

	TP_PROTO(int cpu, int event, u64 cycles, u64 exec_time, struct task_struct *p),



	TP_ARGS(cpu, event, cycles, exec_time),

	TP_ARGS(cpu, event, cycles, exec_time, p),



	TP_STRUCT__entry(

		__field(int,		cpu		)
@@ -448,6 +448,8 @@ TRACE_EVENT(sched_get_task_cpu_cycles, 
		__field(u32,		freq		)

		__field(u32,		legacy_freq	)

		__field(u32,		max_freq)

		__field(pid_t,		pid		)

		__array(char,	comm,   TASK_COMM_LEN	)

	),



	TP_fast_assign(
@@ -458,12 +460,14 @@ TRACE_EVENT(sched_get_task_cpu_cycles, 
		__entry->freq		= cpu_cycles_to_freq(cycles, exec_time);

		__entry->legacy_freq 	= cpu_cur_freq(cpu);

		__entry->max_freq	= cpu_max_freq(cpu);

		__entry->pid            = p->pid;

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

	),



	TP_printk("cpu=%d event=%d cycles=%llu exec_time=%llu freq=%u legacy_freq=%u max_freq=%u",

	TP_printk("cpu=%d event=%d cycles=%llu exec_time=%llu freq=%u legacy_freq=%u max_freq=%u task=%d (%s)",

		__entry->cpu, __entry->event, __entry->cycles,

		__entry->exec_time, __entry->freq, __entry->legacy_freq,

		__entry->max_freq)

		__entry->max_freq, __entry->pid, __entry->comm)

);



TRACE_EVENT(sched_update_history,

kernel/sched/hmp.c

+2 −1
Original line number Diff line number Diff line
@@ -2608,7 +2608,8 @@ update_task_rq_cpu_cycles(struct task_struct *p, struct rq *rq, int event, 


	p->cpu_cycles = cur_cycles;



	trace_sched_get_task_cpu_cycles(cpu, event, rq->cc.cycles, rq->cc.time);

	trace_sched_get_task_cpu_cycles(cpu, event, rq->cc.cycles,

					rq->cc.time, p);

}



static int