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Commit c153dfba authored by Raghavendra Kakarla's avatar Raghavendra Kakarla
Browse files

driver: lpm-levels: Add check for IPI pendning in core lpm path 



Add check whether IPI is in pending state for the core while its
entering to LPM.

Change-Id: I6927fd445a1e2e46a4b5329003994a5bd710dc66
Signed-off-by: default avatarRaghavendra Kakarla <rkakarla@codeaurora.org>
parent 33569a19

drivers/cpuidle/lpm-levels.c

+2 −1
Original line number Diff line number Diff line
@@ -1418,6 +1418,7 @@ void update_ipi_history(int cpu) 
	if (history->current_ptr >= MAXSAMPLES)

		history->current_ptr = 0;

	history->cpu_idle_resched_ts = now;

	trace_ipi_wakeup_time(ktime_to_us(now));

}

#endif
@@ -1474,7 +1475,7 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev, 
	trace_cpu_idle_enter(idx);

	lpm_stats_cpu_enter(idx, start_time);



	if (need_resched())

	if (need_resched() || is_IPI_pending(cpumask_of(dev->cpu)))

		goto exit;



	if (idx == cpu->nlevels - 1)

include/trace/events/trace_msm_low_power.h

+17 −0
Original line number Diff line number Diff line
@@ -244,6 +244,23 @@ TRACE_EVENT(cluster_pred_hist, 
		__entry->sample, __entry->tmr)

);



TRACE_EVENT(ipi_wakeup_time,



	TP_PROTO(u64 wakeup),



	TP_ARGS(wakeup),



	TP_STRUCT__entry(

		__field(u64, wakeup)

	),



	TP_fast_assign(

		__entry->wakeup = wakeup;

	),



	TP_printk("wakeup:%llu", __entry->wakeup)

);



#endif

#define TRACE_INCLUDE_FILE trace_msm_low_power

#include <trace/define_trace.h>