Commit 6d4a2987 authored by Mario Limonciello's avatar Mario Limonciello Committed by Shuah Khan
Browse files

cpupower: Add support for amd-pstate preferred core rankings 

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: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent 3f2eb760

tools/power/cpupower/utils/helpers/amd.c

+8 −0
Original line number Diff line number Diff line
@@ -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 ************************************/