[PATCH v2 0/2] powernv: cpufreq: Report frequency throttle by OCC

From: Shilpasri G Bhat
Date: Tue Apr 28 2015 - 02:24:01 EST


This patchset intends to add frequency throttle reporting mechanism
to powernv-cpufreq driver when OCC throttles the frequency. OCC is an
On-Chip-Controller which takes care of the power and thermal safety of
the chip. The CPU frequency can be throttled during an OCC reset or
when OCC tries to limit the max allowed frequency. The patchset will
report such conditions so as to keep the user informed about reason
for the drop in performance of workloads when frequency is throttled.

Shilpasri G Bhat (2):
powerpc/powernv: Add definition of OPAL_MSG_OCC message type
cpufreq: powernv: Register for OCC related opal_message notification

arch/powerpc/include/asm/opal-api.h | 8 ++
drivers/cpufreq/powernv-cpufreq.c | 181 +++++++++++++++++++++++++++++++++---
2 files changed, 174 insertions(+), 15 deletions(-)

--
1.9.3

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