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cpupower: Add support for amd-pstate preferred core rankings

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The rankings are useful information to determine if the scheduler
is placing tasks appropriately for the hardware.

Link: https://lore.kernel.org/r/20241218191144.3440854-4-superm1@kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Mario Limonciello 2024-12-18 13:09:52 -06:00 committed by Shuah Khan
parent 3f2eb7606e
commit 6d4a2987f9
1 changed files with 8 additions and 0 deletions
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8
tools/power/cpupower/utils/helpers/amd.c
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@ -177,6 +177,8 @@ enum amd_pstate_value {
AMD_PSTATE_HIGHEST_PERF,
AMD_PSTATE_MAX_FREQ,
AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
AMD_PSTATE_HW_PREFCORE,
AMD_PSTATE_PREFCORE_RANKING,
MAX_AMD_PSTATE_VALUE_READ_FILES,
};
@ -184,6 +186,8 @@ static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
[AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
[AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
[AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
[AMD_PSTATE_HW_PREFCORE] = "amd_pstate_hw_prefcore",
[AMD_PSTATE_PREFCORE_RANKING] = "amd_pstate_prefcore_ranking",
};
static unsigned long amd_pstate_get_data(unsigned int cpu,
@ -240,6 +244,10 @@ void amd_pstate_show_perf_and_freq(unsigned int cpu, int no_rounding)
acpi_cppc_get_data(cpu, LOWEST_PERF));
print_speed(acpi_cppc_get_data(cpu, LOWEST_FREQ) * 1000, no_rounding);
printf(".\n");
printf(_(" Preferred Core Support: %lu. Preferred Core Ranking: %lu.\n"),
amd_pstate_get_data(cpu, AMD_PSTATE_HW_PREFCORE),
amd_pstate_get_data(cpu, AMD_PSTATE_PREFCORE_RANKING));
}
/* AMD P-State Helper Functions ************************************/