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Commit f8ec1062 authored by Steven Rostedt's avatar Steven Rostedt Committed by Ingo Molnar
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wakeup-tracer: show scheduling data in output 



Impact: better data for wakeup tracer

This patch adds the wakeup and schedule calls that are used by
the scheduler tracer to make the wakeup tracer more readable.

Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 3244351c

kernel/trace/trace_sched_wakeup.c

+8 −3
Original line number Diff line number Diff line
@@ -153,6 +153,7 @@ probe_wakeup_sched_switch(struct rq *rq, struct task_struct *prev, 
		goto out_unlock;



	trace_function(wakeup_trace, data, CALLER_ADDR1, CALLER_ADDR2, flags, pc);

	tracing_sched_switch_trace(wakeup_trace, data, prev, next, flags, pc);



	/*

	 * usecs conversion is slow so we try to delay the conversion
@@ -214,6 +215,7 @@ static void wakeup_reset(struct trace_array *tr) 
static void

probe_wakeup(struct rq *rq, struct task_struct *p, int success)

{

	struct trace_array_cpu *data;

	int cpu = smp_processor_id();

	unsigned long flags;

	long disabled;
@@ -253,9 +255,12 @@ probe_wakeup(struct rq *rq, struct task_struct *p, int success) 


	local_save_flags(flags);



	wakeup_trace->data[wakeup_cpu]->preempt_timestamp = ftrace_now(cpu);

	trace_function(wakeup_trace, wakeup_trace->data[wakeup_cpu],

		       CALLER_ADDR1, CALLER_ADDR2, flags, pc);

	data = wakeup_trace->data[wakeup_cpu];

	data->preempt_timestamp = ftrace_now(cpu);

	tracing_sched_wakeup_trace(wakeup_trace, data, p, current,

				   flags, pc);

	trace_function(wakeup_trace, data, CALLER_ADDR1, CALLER_ADDR2,

		       flags, pc);



out_locked:

	__raw_spin_unlock(&wakeup_lock);