#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <sched.h>
#include <cpufreq.h>
#include "config.h"
#include "system.h"

Functions
long long int	get_time ()

int	set_cpufreq_governor (char *governor, unsigned int cpu)

int	set_cpu_affinity (unsigned int cpu)

int	set_process_priority (int priority)

void	prepare_user (const struct config *config)

void	prepare_system (const struct config *config)

Function Documentation

long long int get_time ( void )

returns time since epoch in µs

Return values

time

Definition at line 39 of file system.c.

void prepare_system ( const struct config * config )

sets up the cpu affinity and scheduler priority

Parameters

config benchmark config values

Definition at line 164 of file system.c.

void prepare_user ( const struct config * config )

notifies the user that the benchmark may run some time

Parameters

config benchmark config values

Definition at line 138 of file system.c.

int set_cpu_affinity ( unsigned int cpu )

sets cpu affinity for the process

Parameters

cpu	cpu# to which the affinity should be set

Return values

0	on success
-1	when setting the affinity failed

Definition at line 87 of file system.c.

int set_cpufreq_governor	(	char *	governor,
		unsigned int	cpu
	)

sets the cpufreq governor

Parameters

governor	cpufreq governor name
cpu	cpu for which the governor should be set

Return values

0	on success
-1	when failed

Definition at line 58 of file system.c.

int set_process_priority ( int priority )

sets the process priority parameter

Parameters

priority priority value

Return values

0	on success
-1	when setting the priority failed

Definition at line 114 of file system.c.

Functions

Function Documentation