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    SubjectRe: [PATCH v3 17/21] cpupower: add amd-pstate sysfs definition and access helper
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    On 10/29/2021 08:02, Huang Rui wrote:
    > Introduce the marco definitions and access helper function for

    You've got a spelling error here.

    > amd-pstate sysfs interfaces such as each performance goals and frequency
    > levels in amd helper file. They will be used to read the sysfs attribute
    > from amd-pstate cpufreq driver for cpupower utilities.
    >
    > Signed-off-by: Huang Rui <ray.huang@amd.com>
    > ---
    > tools/power/cpupower/utils/helpers/amd.c | 37 ++++++++++++++++++++++++
    > 1 file changed, 37 insertions(+)
    >
    > diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
    > index 97f2c857048e..f233a6ab75ac 100644
    > --- a/tools/power/cpupower/utils/helpers/amd.c
    > +++ b/tools/power/cpupower/utils/helpers/amd.c
    > @@ -8,7 +8,9 @@
    > #include <pci/pci.h>
    >
    > #include "helpers/helpers.h"
    > +#include "cpufreq.h"
    >
    > +/* ACPI P-States Helper Functions for AMD Processors ***************/ > #define MSR_AMD_PSTATE_STATUS 0xc0010063
    > #define MSR_AMD_PSTATE 0xc0010064
    > #define MSR_AMD_PSTATE_LIMIT 0xc0010061
    > @@ -146,4 +148,39 @@ int amd_pci_get_num_boost_states(int *active, int *states)
    > pci_cleanup(pci_acc);
    > return 0;
    > }
    > +
    > +/* ACPI P-States Helper Functions for AMD Processors ***************/
    > +
    > +/* AMD P-States Helper Functions ***************/
    > +enum amd_pstate_value {
    > + AMD_PSTATE_HIGHEST_PERF,
    > + AMD_PSTATE_NOMINAL_PERF,
    > + AMD_PSTATE_LOWEST_NONLINEAR_PERF,
    > + AMD_PSTATE_LOWEST_PERF,
    > + AMD_PSTATE_MAX_FREQ,
    > + AMD_PSTATE_NOMINAL_FREQ,
    > + AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
    > + MAX_AMD_PSTATE_VALUE_READ_FILES
    > +};
    > +
    > +static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
    > + [AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
    > + [AMD_PSTATE_NOMINAL_PERF] = "amd_pstate_nominal_perf",
    > + [AMD_PSTATE_LOWEST_NONLINEAR_PERF] = "amd_pstate_lowest_nonlinear_perf",
    > + [AMD_PSTATE_LOWEST_PERF] = "amd_pstate_lowest_perf",
    > + [AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
    > + [AMD_PSTATE_NOMINAL_FREQ] = "amd_pstate_nominal_freq",
    > + [AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
    > +};
    > +
    > +static unsigned long amd_pstate_get_data(unsigned int cpu,
    > + enum amd_pstate_value value)
    > +{
    > + return cpufreq_get_sysfs_value_from_table(cpu,
    > + amd_pstate_value_files,
    > + value,
    > + MAX_AMD_PSTATE_VALUE_READ_FILES);
    > +}
    > +
    > +/* AMD P-States Helper Functions ***************/
    > #endif /* defined(__i386__) || defined(__x86_64__) */
    >

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