admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

cpuidle: teo: Simplify handling of total events count

Browse Source 
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 <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/9388883.CDJkKcVGEf@rjwysocki.net
This commit is contained in:
Rafael J. Wysocki
2025-01-13 19:50:23 +01:00
parent 13ed5c4a6d
commit ddcfa79646
1 changed files with 1 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/cpuidle/governors/teo.c
View File

@@ -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;
}