acpi: add counters for cumulative time spent in each sleep state.
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Authored by adrian on Nov 7 2025, 4:39 AM.

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obiwac
imp
gallatin
adrian

Commits

rG53880f09fb1b: acpi: add counters for cumulative time spent in each sleep state.

Summary

Add this so it can be consumed/graphed.

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Repository

rG FreeBSD src repository

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Build Status

Buildable 68473
Build 65356: arc lint + arc unit

Event Timeline

adrian created this revision.Nov 7 2025, 4:39 AM

Herald added a subscriber: imp. · View Herald TranscriptNov 7 2025, 4:39 AM

Harbormaster completed remote builds in B68473: Diff 166015.Nov 7 2025, 4:39 AM

adrian requested review of this revision.Nov 7 2025, 4:39 AM

adrian added a reviewer: obiwac.Nov 7 2025, 4:45 AM

Seems legit. It's per cpu already so it should be this simple. Maybe check on the size of the cpu so it doesn't spill to a new cache line

This revision is now accepted and ready to land.Nov 7 2025, 4:53 AM

Hi @gallatin would you mind helping me eyeball what the cacheline size / offset implications would be for extending the per-CPU ACPI stuff like this? Thanks!

gallatin accepted this revision.Nov 11 2025, 4:44 PM

Closed by commit rG53880f09fb1b: acpi: add counters for cumulative time spent in each sleep state. (authored by adrian). · Explain WhyNov 11 2025, 8:45 PM

This revision was automatically updated to reflect the committed changes.

adrian added a commit: rG53880f09fb1b: acpi: add counters for cumulative time spent in each sleep state..

Revision Contents
Changeset List

Path

Size

sys/

dev/

acpica/

acpi_cpu.c

30 lines

Diff 166015

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acpi: add counters for cumulative time spent in each sleep state.ClosedPublicActions