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cpuidle: teo: Simplify handling of total events count

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Instead of computing the total events count from scratch every time,
decay it and add a PULSE value to it in teo_update().

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <[email protected]>
Reviewed-by: Christian Loehle <[email protected]>
Tested-by: Aboorva Devarajan <[email protected]>
Tested-by: Christian Loehle <[email protected]>
Link: https://patch.msgid.link/[email protected]
This commit is contained in:
Rafael J. Wysocki committed 2025-01-20 17:17:56 +01:00
1 parent 13ed5c4a6d
commit ddcfa79646
1 file changed
+1 -4
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drivers/cpuidle/governors/teo.c
+1 -4
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@@ -189,8 +189,6 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
}
}
cpu_data->total = 0;
/*
* Decay the "hits" and "intercepts" metrics for all of the bins and
* find the bins that the sleep length and the measured idle duration
@@ -202,8 +200,6 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
bin->hits -= bin->hits >> DECAY_SHIFT;
bin->intercepts -= bin->intercepts >> DECAY_SHIFT;
cpu_data->total += bin->hits + bin->intercepts;
target_residency_ns = drv->states[i].target_residency_ns;
if (target_residency_ns <= cpu_data->sleep_length_ns) {
@@ -228,6 +224,7 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
cpu_data->tick_intercepts += PULSE;
}
cpu_data->total -= cpu_data->total >> DECAY_SHIFT;
cpu_data->total += PULSE;
}