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cpuidle: governors: qcom-lpm: Log the prediction pattern type

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Log the prediction pattern type in trace.
While at this also fix setting next_pred_time conversion to usec.

Change-Id: I5f5370fccd421661d5bc62cb679867e907a44af5
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
This commit is contained in:
Maulik Shah 2023-07-04 09:52:48 +05:30
parent c7a452dcff
commit 62dbe04436
2 changed files with 16 additions and 3 deletions
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18
drivers/cpuidle/governors/qcom-lpm.c
View File

@ -30,6 +30,11 @@
#define CREATE_TRACE_POINTS
#include "trace-qcom-lpm.h"
#define LPM_PRED_RESET 0
#define LPM_PRED_RESIDENCY_PATTERN 1
#define LPM_PRED_PREMATURE_EXITS 2
#define LPM_PRED_IPI_PATTERN 3
#define LPM_SELECT_STATE_DISABLED 0
#define LPM_SELECT_STATE_QOS_UNMET 1
#define LPM_SELECT_STATE_RESIDENCY_UNMET 2
@ -266,8 +271,10 @@ static void cpu_predict(struct lpm_cpu *cpu_gov, u64 duration_ns)
* that mode.
*/
cpu_gov->predicted = find_deviation(cpu_gov, lpm_history->resi, duration_ns);
if (cpu_gov->predicted)
if (cpu_gov->predicted) {
cpu_gov->pred_type = LPM_PRED_RESIDENCY_PATTERN;
return;
}
/*
* Find the number of premature exits for each of the mode,
@ -291,8 +298,9 @@ static void cpu_predict(struct lpm_cpu *cpu_gov, u64 duration_ns)
if (count >= PRED_PREMATURE_CNT) {
do_div(avg_residency, count);
cpu_gov->predicted = avg_residency;
cpu_gov->next_pred_time = ktime_to_ns(cpu_gov->now)
cpu_gov->next_pred_time = ktime_to_us(cpu_gov->now)
+ cpu_gov->predicted;
cpu_gov->pred_type = LPM_PRED_PREMATURE_EXITS;
break;
}
}
@ -302,6 +310,8 @@ static void cpu_predict(struct lpm_cpu *cpu_gov, u64 duration_ns)
cpu_gov->predicted = find_deviation(cpu_gov, ipi_history->interval,
duration_ns);
if (cpu_gov->predicted)
cpu_gov->pred_type = LPM_PRED_IPI_PATTERN;
}
/**
@ -326,6 +336,7 @@ void clear_cpu_predict_history(void)
lpm_history->samples_idx = 0;
lpm_history->nsamp = 0;
cpu_gov->next_pred_time = 0;
cpu_gov->pred_type = LPM_PRED_RESET;
}
}
}
@ -365,6 +376,7 @@ static void update_cpu_history(struct lpm_cpu *cpu_gov)
lpm_history->resi[lpm_history->samples_idx] = measured_us;
lpm_history->mode[lpm_history->samples_idx] = idx;
cpu_gov->pred_type = LPM_PRED_RESET;
trace_gov_pred_hist(idx, lpm_history->resi[lpm_history->samples_idx],
tmr);
@ -639,7 +651,7 @@ static int lpm_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
}
trace_lpm_gov_select(i, latency_req, duration_ns, reason);
trace_gov_pred_select(cpu_gov->predicted, cpu_gov->predicted, htime);
trace_gov_pred_select(cpu_gov->pred_type, cpu_gov->predicted, htime);
return i;
}

1
drivers/cpuidle/governors/qcom-lpm.h
View File

@ -59,6 +59,7 @@ struct lpm_cpu {
ktime_t now;
uint64_t bias;
int64_t next_pred_time;
uint32_t pred_type;
bool ipi_pending;
spinlock_t lock;
};