Thread (16 messages) flat view 16 messages, 5 authors, 2016-01-12

Re: [PATCH v3 0/2] cpufreq: powernv: Redesign the presentation of throttle notification

From: Stewart Smith <hidden>
Date: 2016-01-06 06:52:26
Also in: linux-pm, lkml

Shilpasri G Bhat [off-list ref] 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.
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