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cpufreq: amd-pstate: Expose struct amd_cpudata
Expose struct amd_cpudata to AMD P-State unit test module. This data struct will be used on the following AMD P-State unit test (amd-pstate-ut) module. The amd-pstate-ut module can get some AMD infomations by this data struct. For example: highest perf, nominal perf, boost supported etc. Signed-off-by: Meng Li <li.meng@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Meng Li
Shuah Khan
parent
0e29bc0eba
commit
f1375ec1df
@ -1045,6 +1045,7 @@ L: linux-pm@vger.kernel.org
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S: Supported
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S: Supported
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F: Documentation/admin-guide/pm/amd-pstate.rst
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F: Documentation/admin-guide/pm/amd-pstate.rst
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F: drivers/cpufreq/amd-pstate*
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F: drivers/cpufreq/amd-pstate*
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F: include/linux/amd-pstate.h
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F: tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
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F: tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
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AMD PTDMA DRIVER
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AMD PTDMA DRIVER
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@ -36,6 +36,7 @@
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#include <linux/delay.h>
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#include <linux/delay.h>
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#include <linux/uaccess.h>
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#include <linux/uaccess.h>
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#include <linux/static_call.h>
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#include <linux/static_call.h>
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#include <linux/amd-pstate.h>
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#include <acpi/processor.h>
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#include <acpi/processor.h>
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#include <acpi/cppc_acpi.h>
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#include <acpi/cppc_acpi.h>
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@ -65,65 +66,6 @@ MODULE_PARM_DESC(shared_mem,
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static struct cpufreq_driver amd_pstate_driver;
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static struct cpufreq_driver amd_pstate_driver;
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/**
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* struct amd_aperf_mperf
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* @aperf: actual performance frequency clock count
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* @mperf: maximum performance frequency clock count
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* @tsc: time stamp counter
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*/
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struct amd_aperf_mperf {
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u64 aperf;
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u64 mperf;
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u64 tsc;
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};
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/**
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* struct amd_cpudata - private CPU data for AMD P-State
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* @cpu: CPU number
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* @req: constraint request to apply
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* @cppc_req_cached: cached performance request hints
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* @highest_perf: the maximum performance an individual processor may reach,
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* assuming ideal conditions
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* @nominal_perf: the maximum sustained performance level of the processor,
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* assuming ideal operating conditions
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* @lowest_nonlinear_perf: the lowest performance level at which nonlinear power
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* savings are achieved
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* @lowest_perf: the absolute lowest performance level of the processor
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* @max_freq: the frequency that mapped to highest_perf
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* @min_freq: the frequency that mapped to lowest_perf
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* @nominal_freq: the frequency that mapped to nominal_perf
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* @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf
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* @cur: Difference of Aperf/Mperf/tsc count between last and current sample
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* @prev: Last Aperf/Mperf/tsc count value read from register
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* @freq: current cpu frequency value
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* @boost_supported: check whether the Processor or SBIOS supports boost mode
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*
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* The amd_cpudata is key private data for each CPU thread in AMD P-State, and
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* represents all the attributes and goals that AMD P-State requests at runtime.
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*/
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struct amd_cpudata {
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int cpu;
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struct freq_qos_request req[2];
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u64 cppc_req_cached;
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u32 highest_perf;
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u32 nominal_perf;
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u32 lowest_nonlinear_perf;
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u32 lowest_perf;
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u32 max_freq;
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u32 min_freq;
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u32 nominal_freq;
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u32 lowest_nonlinear_freq;
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struct amd_aperf_mperf cur;
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struct amd_aperf_mperf prev;
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u64 freq;
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bool boost_supported;
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};
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static inline int pstate_enable(bool enable)
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static inline int pstate_enable(bool enable)
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{
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{
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return wrmsrl_safe(MSR_AMD_CPPC_ENABLE, enable);
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return wrmsrl_safe(MSR_AMD_CPPC_ENABLE, enable);
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77
include/linux/amd-pstate.h
Normal file
77
include/linux/amd-pstate.h
Normal file
@ -0,0 +1,77 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/include/linux/amd-pstate.h
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*
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* Copyright (C) 2022 Advanced Micro Devices, Inc.
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*
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* Author: Meng Li <li.meng@amd.com>
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*/
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#ifndef _LINUX_AMD_PSTATE_H
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#define _LINUX_AMD_PSTATE_H
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#include <linux/pm_qos.h>
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/*********************************************************************
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* AMD P-state INTERFACE *
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*********************************************************************/
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/**
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* struct amd_aperf_mperf
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* @aperf: actual performance frequency clock count
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* @mperf: maximum performance frequency clock count
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* @tsc: time stamp counter
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*/
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struct amd_aperf_mperf {
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u64 aperf;
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u64 mperf;
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u64 tsc;
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};
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/**
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* struct amd_cpudata - private CPU data for AMD P-State
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* @cpu: CPU number
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* @req: constraint request to apply
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* @cppc_req_cached: cached performance request hints
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* @highest_perf: the maximum performance an individual processor may reach,
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* assuming ideal conditions
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* @nominal_perf: the maximum sustained performance level of the processor,
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* assuming ideal operating conditions
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* @lowest_nonlinear_perf: the lowest performance level at which nonlinear power
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* savings are achieved
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* @lowest_perf: the absolute lowest performance level of the processor
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* @max_freq: the frequency that mapped to highest_perf
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* @min_freq: the frequency that mapped to lowest_perf
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* @nominal_freq: the frequency that mapped to nominal_perf
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* @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf
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* @cur: Difference of Aperf/Mperf/tsc count between last and current sample
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* @prev: Last Aperf/Mperf/tsc count value read from register
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* @freq: current cpu frequency value
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* @boost_supported: check whether the Processor or SBIOS supports boost mode
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*
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* The amd_cpudata is key private data for each CPU thread in AMD P-State, and
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* represents all the attributes and goals that AMD P-State requests at runtime.
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*/
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struct amd_cpudata {
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int cpu;
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struct freq_qos_request req[2];
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u64 cppc_req_cached;
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u32 highest_perf;
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u32 nominal_perf;
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u32 lowest_nonlinear_perf;
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u32 lowest_perf;
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u32 max_freq;
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u32 min_freq;
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u32 nominal_freq;
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u32 lowest_nonlinear_freq;
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struct amd_aperf_mperf cur;
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struct amd_aperf_mperf prev;
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u64 freq;
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bool boost_supported;
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};
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#endif /* _LINUX_AMD_PSTATE_H */
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