Oracle Sun servers(X86) have power capping features that work via ACPI _PPC method,
patch No.1 is used to skip this driver if Oracle Sun server and _PPC detected.
Patch No.2 introduces a kernel command line parameter for those who would like
to enable intel_pstate on Sun X86 servers and be aware of the risk of no power
capping capability working and try to get better performance.
Compiled and tested with stable-3.18-rc5 on Oracle Sun server X4-2 series.
Thanks test and review by Linda Knippers <linda.knippers@xxxxxx>
and the suggestion,review from Dirk Brandewie <dirk.j.brandewie@xxxxxxxxx>.
--
v2: fix break HP Proliant issue.
v3: expand the hardware vendor list.
v4: refine code and doc
Ethan Zhao (2):
intel_pstate: skip this driver if Sun server has _PPC method
intel_pstate: add kernel parameter to force loading on Sun X86
servers.
Documentation/kernel-parameters.txt | 5 ++++
drivers/cpufreq/intel_pstate.c | 49 ++++++++++++++++++++++++++++++++++---
2 files changed, 50 insertions(+), 4 deletions(-)
--
1.8.3.1
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