Re: [PATCH v3 0/2] cpufreq: powernv: Redesign the presentation of throttle notification
From: Stewart Smith
Date: Wed Jan 06 2016 - 01:52:28 EST
Shilpasri G Bhat <shilpa.bhat@xxxxxxxxxxxxxxxxxx> writes:
> In POWER8, OCC(On-Chip-Controller) can throttle the frequency of the
> CPU when the chip crosses its thermal and power limits. Currently,
> powernv-cpufreq driver detects and reports this event as a console
> message. Some boxes may not sustain the max turbo frequency in all
> conditions and can be throttled frequently. This can lead to the
> flooding of console with throttle messages. So this patchset aims to
> redesign the presentation of this event via sysfs counters and
> tracepoints.
This likely should CC stable@ as we have seen this on some machines, at
least in the lab.
--
Stewart Smith
OPAL Architect, IBM.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/