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ACPI / CPPC: add sysfs entries for CPPC perf capabilities

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Computed delivered performance using CPPC feedback counters are in the
CPPC abstract scale, whereas cppc_cpufreq driver operates in KHz scale.
Exposing the CPPC performance capabilities (highest,lowest, nominal,
lowest non-linear) will allow userspace to figure out the conversion
factor from CPPC abstract scale to KHz.

Also rename ctr_wrap_time to wraparound_time so that show_cppc_data()
macro will work with it.

Signed-off-by: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Prakash, Prashanth
2017-03-29 13:50:00 -06:00
committed by Rafael J. Wysocki
parent 368520a6b2
commit 2c74d8473d
2 changed files with 34 additions and 29 deletions
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include/acpi/cppc_acpi.h
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@@ -116,7 +116,7 @@ struct cppc_perf_fb_ctrs {
u64 reference;
u64 delivered;
u64 reference_perf;
u64 ctr_wrap_time;
u64 wraparound_time;
};
/* Per CPU container for runtime CPPC management. */