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

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

Change-Id: I6927fd445a1e2e46a4b5329003994a5bd710dc66
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>
This commit is contained in:
Raghavendra Kakarla 2020-12-07 09:22:02 +05:30
parent 33569a19db
commit c153dfba1a
2 changed files with 19 additions and 1 deletions
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3
drivers/cpuidle/lpm-levels.c
View File

@ -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)

17
include/trace/events/trace_msm_low_power.h
View File

@ -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>