sysfs: add support for ACPI 4.0 power meters - #860
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Add GetPowerMeters() to enumerate ACPI power meter devices exposed by the kernel driver drivers/hwmon/acpi_power_meter.c via the ACPI bus path /sys/bus/acpi/drivers/power_meter/ACPI000D:*. The PowerMeter struct covers: - Standard hwmon attributes (power1_average, *_interval, alarm, etc.) - Optional capping attributes (power1_cap, cap_min/max/hyst) - ACPI extension attributes (accuracy, is_battery, model/serial/OEM) - The measures/ subdirectory (list of measured devices) All optional fields use pointer types and are nil when the firmware does not expose them, ensuring graceful degradation across different ACPI implementations. Returns nil, nil when the ACPI bus path does not exist, matching the behaviour of GetRaplZones. Closes prometheus#753 Signed-off-by: dongjiang <dongjiang@xiaomi.com> Signed-off-by: dongjiang <dongjiang1989@126.com>
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Summary
Add
GetPowerMeters()to thesysfspackage to enumerate ACPI 4.0 power meter devices exposed by the kernel driverdrivers/hwmon/acpi_power_meter.cvia the ACPI bus path/sys/bus/acpi/drivers/power_meter/ACPI000D:*.Closes #753.