100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
|
/*
|
||
|
|
* QEMU KVM support -- x86 virtual energy-related MSR.
|
||
|
|
*
|
||
|
|
* Copyright 2024 Red Hat, Inc. 2024
|
||
|
|
*
|
||
|
|
* Author:
|
||
|
|
* Anthony Harivel <aharivel@redhat.com>
|
||
|
|
*
|
||
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
||
|
|
* See the COPYING file in the top-level directory.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef VMSR_ENERGY_H
|
||
|
|
#define VMSR_ENERGY_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
#include "qemu/osdep.h"
|
||
|
|
#include "io/channel-socket.h"
|
||
|
|
#include "hw/i386/topology.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define the interval time in micro seconds between 2 samples of
|
||
|
|
* energy related MSRs
|
||
|
|
*/
|
||
|
|
#define MSR_ENERGY_THREAD_SLEEP_US 1000000.0
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Thread statistic
|
||
|
|
* @ thread_id: TID (thread ID)
|
||
|
|
* @ is_vcpu: true if TID is vCPU thread
|
||
|
|
* @ cpu_id: CPU number last executed on
|
||
|
|
* @ pkg_id: package number of the CPU
|
||
|
|
* @ vcpu_id: vCPU ID
|
||
|
|
* @ vpkg: virtual package number
|
||
|
|
* @ acpi_id: APIC id of the vCPU
|
||
|
|
* @ utime: amount of clock ticks the thread
|
||
|
|
* has been scheduled in User mode
|
||
|
|
* @ stime: amount of clock ticks the thread
|
||
|
|
* has been scheduled in System mode
|
||
|
|
* @ delta_ticks: delta of utime+stime between
|
||
|
|
* the two samples (before/after sleep)
|
||
|
|
*/
|
||
|
|
struct vmsr_thread_stat {
|
||
|
|
unsigned int thread_id;
|
||
|
|
bool is_vcpu;
|
||
|
|
unsigned int cpu_id;
|
||
|
|
unsigned int pkg_id;
|
||
|
|
unsigned int vpkg_id;
|
||
|
|
unsigned int vcpu_id;
|
||
|
|
unsigned long acpi_id;
|
||
|
|
unsigned long long *utime;
|
||
|
|
unsigned long long *stime;
|
||
|
|
unsigned long long delta_ticks;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Package statistic
|
||
|
|
* @ e_start: package energy counter before the sleep
|
||
|
|
* @ e_end: package energy counter after the sleep
|
||
|
|
* @ e_delta: delta of package energy counter
|
||
|
|
* @ e_ratio: store the energy ratio of non-vCPU thread
|
||
|
|
* @ nb_vcpu: number of vCPU running on this package
|
||
|
|
*/
|
||
|
|
struct vmsr_package_energy_stat {
|
||
|
|
uint64_t e_start;
|
||
|
|
uint64_t e_end;
|
||
|
|
uint64_t e_delta;
|
||
|
|
uint64_t e_ratio;
|
||
|
|
unsigned int nb_vcpu;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef struct vmsr_thread_stat vmsr_thread_stat;
|
||
|
|
typedef struct vmsr_package_energy_stat vmsr_package_energy_stat;
|
||
|
|
|
||
|
|
char *vmsr_compute_default_paths(void);
|
||
|
|
void vmsr_read_thread_stat(pid_t pid,
|
||
|
|
unsigned int thread_id,
|
||
|
|
unsigned long long *utime,
|
||
|
|
unsigned long long *stime,
|
||
|
|
unsigned int *cpu_id);
|
||
|
|
|
||
|
|
QIOChannelSocket *vmsr_open_socket(const char *path);
|
||
|
|
uint64_t vmsr_read_msr(uint32_t reg, uint32_t cpu_id,
|
||
|
|
uint32_t tid, QIOChannelSocket *sioc);
|
||
|
|
void vmsr_delta_ticks(vmsr_thread_stat *thd_stat, int i);
|
||
|
|
unsigned int vmsr_get_maxcpus(void);
|
||
|
|
unsigned int vmsr_get_max_physical_package(unsigned int max_cpus);
|
||
|
|
unsigned int vmsr_count_cpus_per_package(unsigned int *package_count,
|
||
|
|
unsigned int max_pkgs);
|
||
|
|
int vmsr_get_physical_package_id(int cpu_id);
|
||
|
|
pid_t *vmsr_get_thread_ids(pid_t pid, unsigned int *num_threads);
|
||
|
|
double vmsr_get_ratio(uint64_t e_delta,
|
||
|
|
unsigned long long delta_ticks,
|
||
|
|
unsigned int maxticks);
|
||
|
|
void vmsr_init_topo_info(X86CPUTopoInfo *topo_info, const MachineState *ms);
|
||
|
|
bool is_host_cpu_intel(void);
|
||
|
|
int is_rapl_enabled(void);
|
||
|
|
#endif /* VMSR_ENERGY_H */
|