| 1 | |
| 2 |
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| 3 | #include <stdio.h>
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| 4 | #include <errno.h>
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| 5 | #include <stdlib.h>
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| 6 | #include <string.h>
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| 7 | #include <math.h>
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| 8 |
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| 9 | #include "helpers/helpers.h"
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| 10 | #include "cpufreq.h"
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| 11 | #include "acpi_cppc.h"
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| 12 |
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| 13 | #define cppc_to_frequency(perf) (roundf(slope * (perf) + intercept))
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| 14 |
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| 15 | void cppc_show_perf_and_freq(unsigned int cpu, int no_rounding)
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| 16 | {
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| 17 | int64_t nominal = acpi_cppc_get_data(cpu, NOMINAL_PERF);
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| 18 | int64_t nominal_freq = acpi_cppc_get_data(cpu, NOMINAL_FREQ) * 1000;
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| 19 | int64_t lowest = acpi_cppc_get_data(cpu, LOWEST_PERF);
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| 20 | int64_t lowest_freq = acpi_cppc_get_data(cpu, LOWEST_FREQ) * 1000;
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| 21 | unsigned long non_linear = acpi_cppc_get_data(cpu, LOWEST_NONLINEAR_PERF);
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| 22 | unsigned long highest = acpi_cppc_get_data(cpu, HIGHEST_PERF);
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| 23 | float slope, intercept;
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| 24 |
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| 25 |
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| 26 | if (!nominal_freq || !lowest_freq || nominal == lowest)
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| 27 | return;
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| 28 |
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| 29 | slope = (float)(nominal_freq - lowest_freq) / (nominal - lowest);
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| 30 | intercept = lowest_freq - slope * lowest;
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| 31 |
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| 32 | printf(_(" CPPC limits:\n"));
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| 33 | printf(_(" Highest Performance: %lu. Maximum Frequency: "),
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| 34 | highest);
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| 35 | |
| 36 | * If boost isn't active, the cpuinfo_max doesn't indicate real max
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| 37 | * frequency.
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| 38 |
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| 39 | print_speed(cppc_to_frequency(highest), no_rounding);
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| 40 | printf(".\n");
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| 41 |
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| 42 | printf(_(" Nominal Performance: %lu. Nominal Frequency: "),
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| 43 | acpi_cppc_get_data(cpu, NOMINAL_PERF));
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| 44 | print_speed(nominal_freq, no_rounding);
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| 45 | printf(".\n");
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| 46 |
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| 47 | printf(_(" Lowest Non-linear Performance: %lu. Lowest Non-linear Frequency: "),
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| 48 | non_linear);
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| 49 | print_speed(cppc_to_frequency(non_linear), no_rounding);
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| 50 | printf(".\n");
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| 51 |
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| 52 | printf(_(" Lowest Performance: %lu. Lowest Frequency: "),
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| 53 | acpi_cppc_get_data(cpu, LOWEST_PERF));
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| 54 | print_speed(lowest_freq, no_rounding);
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| 55 | printf(".\n");
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| 56 | }
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