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Commit 750ed1a4 authored by Ingo Molnar's avatar Ingo Molnar Committed by Thomas Gleixner
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ftrace: timestamp syncing, prepare



rename and uninline now() to ftrace_now().

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 4bf39a94
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+2 −2
Original line number Diff line number Diff line
@@ -531,7 +531,7 @@ static int notrace __ftrace_update_code(void *ignore)
	save_ftrace_enabled = ftrace_enabled;
	ftrace_enabled = 0;

	start = now(raw_smp_processor_id());
	start = ftrace_now(raw_smp_processor_id());
	ftrace_update_cnt = 0;

	/* No locks needed, the machine is stopped! */
@@ -550,7 +550,7 @@ static int notrace __ftrace_update_code(void *ignore)

	}

	stop = now(raw_smp_processor_id());
	stop = ftrace_now(raw_smp_processor_id());
	ftrace_update_time = stop - start;
	ftrace_update_tot_cnt += ftrace_update_cnt;

+6 −1
Original line number Diff line number Diff line
@@ -42,6 +42,11 @@ ns2usecs(cycle_t nsec)
	return nsec;
}

notrace cycle_t ftrace_now(int cpu)
{
	return cpu_clock(cpu);
}

static atomic_t			tracer_counter;
static struct trace_array	global_trace;

@@ -607,7 +612,7 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags)
	entry->idx		= atomic_inc_return(&tracer_counter);
	entry->preempt_count	= pc & 0xff;
	entry->pid		= tsk->pid;
	entry->t		= now(raw_smp_processor_id());
	entry->t		= ftrace_now(raw_smp_processor_id());
	entry->flags = (irqs_disabled_flags(flags) ? TRACE_FLAG_IRQS_OFF : 0) |
		((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) |
		((pc & SOFTIRQ_MASK) ? TRACE_FLAG_SOFTIRQ : 0) |
+1 −4
Original line number Diff line number Diff line
@@ -171,10 +171,7 @@ void update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu);
void update_max_tr_single(struct trace_array *tr,
			  struct task_struct *tsk, int cpu);

static inline notrace cycle_t now(int cpu)
{
	return cpu_clock(cpu);
}
extern notrace cycle_t ftrace_now(int cpu);

#ifdef CONFIG_SCHED_TRACER
extern void notrace
+1 −1
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ static notrace void function_reset(struct trace_array *tr)
{
	int cpu;

	tr->time_start = now(tr->cpu);
	tr->time_start = ftrace_now(tr->cpu);

	for_each_online_cpu(cpu)
		tracing_reset(tr->data[cpu]);
+3 −3
Original line number Diff line number Diff line
@@ -136,7 +136,7 @@ check_critical_timing(struct trace_array *tr,
	 * as long as possible:
	 */
	T0 = data->preempt_timestamp;
	T1 = now(cpu);
	T1 = ftrace_now(cpu);
	delta = T1-T0;

	local_save_flags(flags);
@@ -186,7 +186,7 @@ check_critical_timing(struct trace_array *tr,

out:
	data->critical_sequence = max_sequence;
	data->preempt_timestamp = now(cpu);
	data->preempt_timestamp = ftrace_now(cpu);
	tracing_reset(data);
	ftrace(tr, data, CALLER_ADDR0, parent_ip, flags);
}
@@ -215,7 +215,7 @@ start_critical_timing(unsigned long ip, unsigned long parent_ip)
	atomic_inc(&data->disabled);

	data->critical_sequence = max_sequence;
	data->preempt_timestamp = now(cpu);
	data->preempt_timestamp = ftrace_now(cpu);
	data->critical_start = parent_ip ? : ip;
	tracing_reset(data);

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