Merge "msm: lpm-levels: Modify ftrace events to track latency/sleep time" (b739167a) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/cpuidle/lpm-levels.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -360,6 +360,8 @@ static int cpu_power_select(struct cpuidle_device *dev,
		if (modified_time_us && !dev->cpu)
		msm_pm_set_timer(modified_time_us);

		trace_cpu_power_select(best_level, sleep_us, latency_us, next_event_us);

		return best_level;
		}

		@@ -811,10 +813,10 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev,
		sched_set_cpu_cstate(smp_processor_id(), idx + 1,
		pwr_params->energy_overhead, pwr_params->latency_us);

		cpu_prepare(cluster, idx, true);
		trace_cpu_idle_enter(idx);

		cpu_prepare(cluster, idx, true);
		cluster_prepare(cluster, cpumask, idx, true);
		trace_cpu_idle_enter(idx);
		lpm_stats_cpu_enter(idx);

		if (idx > 0 && !use_psci) {
		@@ -829,7 +831,6 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev,
		}

		lpm_stats_cpu_exit(idx, success);
		trace_cpu_idle_exit(idx, success);
		cluster_unprepare(cluster, cpumask, idx, true);
		cpu_unprepare(cluster, idx, true);

		@@ -838,10 +839,11 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev,
		time = ktime_to_ns(ktime_get()) - time;
		do_div(time, 1000);
		dev->last_residency = (int)time;
		trace_cpu_idle_exit(idx, success);

		exit:
		local_irq_enable();
		trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu);
		local_irq_enable();
		return idx;
		}

+27 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2012, 2014, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2012, 2014-2015, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -18,6 +18,31 @@

		#include <linux/tracepoint.h>

		TRACE_EVENT(cpu_power_select,

		TP_PROTO(int index, u32 sleep_us, u32 latency, u32 next_event_us),

		TP_ARGS(index, sleep_us, latency, next_event_us),

		TP_STRUCT__entry(
		__field(int, index)
		__field(u32, sleep_us)
		__field(u32, latency)
		__field(u32, next_event_us)
		),

		TP_fast_assign(
		__entry->index = index;
		__entry->sleep_us = sleep_us;
		__entry->latency = latency;
		__entry->next_event_us = next_event_us;
		),

		TP_printk("idx:%d sleep_time:%u latency:%u next_event:%u",
		__entry->index, __entry->sleep_us, __entry->latency,
		__entry->next_event_us)
		);

		TRACE_EVENT(cpu_idle_enter,

		TP_PROTO(int index),
		@@ -35,6 +60,7 @@ TRACE_EVENT(cpu_idle_enter,
		TP_printk("idx:%d",
		__entry->index)
		);

		TRACE_EVENT(cpu_idle_exit,

		TP_PROTO(int index, bool success),