#include <stdint.h>
#include <stdio.h>
#include "msr_core.h"
#include "msr_turbo.h"
#include "msr_rapl.h"
#include "memhdlr.h"
#include "libmsr_error.h"
#include "cpuid.h"
#include "libmsr_debug.h"

Include dependency graph for msr_turbo.c:

Functions
void	turbo_storage (uint64_t ***val)
	Allocate array for storing raw register data from IA32_PERF_CTL.

void	enable_turbo (void)
	Enable turbo by modifying IA32_PERF_CTL on each logical processor.

void	disable_turbo (void)
	Disable turbo by modifying IA32_PERF_CTL on each logical processor.

void	dump_turbo (FILE *writedest)
	Print turbo data for each logical processor.

void	calc_max_non_turbo (const unsigned socket, struct turbo_activation_ratio_data *info)
	Convert raw bits of MSR_TURBO_ACTIVATION_RATIO to human-readable values.

int	get_max_turbo_activation_ratio (const unsigned socket, struct turbo_activation_ratio_data *info)
	Read value of the MSR_TURBO_ACTIVATION_RATIO register and translate bit fields to human-readable values.

void	calc_max_turbo_ratio (const unsigned socket, struct turbo_limit_data info, struct turbo_limit_data info2)
	Convert raw bits of turbo ratio limit register to human-readable values.

int	get_turbo_ratio_limit (const unsigned socket, struct turbo_limit_data info, struct turbo_limit_data info2)
	Read value of the turbo ratio limit register and translate bit fields to human-readable values.

Function Documentation

void calc_max_non_turbo	(	const unsigned	socket,
		struct turbo_activation_ratio_data *	info
	)

Convert raw bits of MSR_TURBO_ACTIVATION_RATIO to human-readable values.

Parameters

[in]	socket	Unique socket/package identifier.
[out]	info	Data for turbo activation ratio.

void calc_max_turbo_ratio	(	const unsigned	socket,
		struct turbo_limit_data *	info,
		struct turbo_limit_data *	info2
	)

Convert raw bits of turbo ratio limit register to human-readable values.

Parameters

[in]	socket	Unique socket/package identifier.
[out]	info	Data for turbo ratio limit.
[out]	info2	Data for turbo ratio limit 1 (platform dependent).

void disable_turbo ( void )

Disable turbo by modifying IA32_PERF_CTL on each logical processor.

Disable Intel Dynamic Acceleration (IDA) and Intel Turbo Boost Technology by setting bit 32 of IA32_PERF_CTL to 1. This bit is not shared across logical processors in a package, so it must be modified to the same value across all logical processors in the same package.

void dump_turbo ( FILE * writedest )

Print turbo data for each logical processor.

For each logical processor, print the unique core identifier, the value of bit 32 for IA32_PERF_CTL (1 indicates IDA/Turbo Boost is enabled) and the value of bit 38 for IA32_MISC_ENABLE (1 indicates support for IDA/Turbo Boost by the platform).

Parameters

[in] writedest File stream where output will be written to.

void enable_turbo ( void )

Enable turbo by modifying IA32_PERF_CTL on each logical processor.

Enable Intel Dynamic Acceleration (IDA) and Intel Turbo Boost Technology by setting bit 32 of IA32_PERF_CTL to 0. This bit is not shared across logical processors in a package, so it must be modified to the same value across all logical processors in the same package.

int get_max_turbo_activation_ratio	(	const unsigned	socket,
		struct turbo_activation_ratio_data *	info
	)

Read value of the MSR_TURBO_ACTIVATION_RATIO register and translate bit fields to human-readable values.

Parameters

[in]	socket	Unique socket/package identifier.
[out]	info	Data for turbo activation ratio.

Returns: 0 if successful, else -1 if rapl_storage() fails.

int get_turbo_ratio_limit	(	const unsigned	socket,
		struct turbo_limit_data *	info,
		struct turbo_limit_data *	info2
	)

Read value of the turbo ratio limit register and translate bit fields to human-readable values.

Parameters

[in]	socket	Unique socket/package identifier.
[out]	info	Data for turbo ratio limit.
[out]	info2	Data for turbo ratio limit 1 (platform dependent).

Returns: 0 if successful, else -1 if rapl_storage() fails.

void turbo_storage ( uint64_t *** val )

Allocate array for storing raw register data from IA32_PERF_CTL.

There are plans to use a struct to make the indirection less crazy.

Parameters

[in] val Pointer to array of raw IA32_PERF_CTL data, length equal to the total number of logical processors.

Functions

Function Documentation