Messages in this thread | | | From | Shilpasri G Bhat <> | Subject | [PATCH v2 0/2] cpufreq: powernv: Redesign the presentation of throttle notification | Date | Sat, 2 Jan 2016 03:51:52 +0530 |
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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 patchset will add a perf trace point "power:powernv_throttle" and sysfs throttle counter stats in /sys/devices/system/cpu/cpufreq/chipN.
Shilpasri G Bhat (2): cpufreq: powernv/tracing: Add powernv_throttle tracepoint cpufreq: powernv: Redesign the presentation of throttle notification
drivers/cpufreq/powernv-cpufreq.c | 247 +++++++++++++++++++++++++++++++------- include/trace/events/power.h | 22 ++++ kernel/trace/power-traces.c | 1 + 3 files changed, 227 insertions(+), 43 deletions(-)
-- 1.9.3
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