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Merge branch 'pm-cpuidle'

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* pm-cpuidle:
  cpuidle-haltpoll: Enable kvm guest polling when dedicated physical CPUs are available
  cpuidle-haltpoll: do not set an owner to allow modunload
  cpuidle-haltpoll: return -ENODEV on modinit failure
  cpuidle-haltpoll: set haltpoll as preferred governor
  cpuidle: allow governor switch on cpuidle_register_driver()
  powercap: idle_inject: Use higher resolution for idle injection
  cpuidle: play_idle: Increase the resolution to usec
  cpuidle-haltpoll: vcpu hotplug support
  cpuidle: teo: Get rid of redundant check in teo_update()
  cpuidle: teo: Allow tick to be stopped if PM QoS is used
  cpuidle: menu: Allow tick to be stopped if PM QoS is used
  cpuidle: header file stubs must be "static inline"
  cpuidle-haltpoll: disable host side polling when kvm virtualized
  cpuidle: add haltpoll governor
  governors: unify last_state_idx
  cpuidle: add poll_limit_ns to cpuidle_device structure
  add cpuidle-haltpoll driver
This commit is contained in:
Rafael J. Wysocki 2019-09-17 09:41:26 +02:00
commit 2cdd5cc703
26 changed files with 613 additions and 107 deletions
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2
include/linux/cpu.h
View file

@ -179,7 +179,7 @@ void arch_cpu_idle_dead(void);
int cpu_report_state(int cpu);
int cpu_check_up_prepare(int cpu);
void cpu_set_state_online(int cpu);
void play_idle(unsigned long duration_ms);
void play_idle(unsigned long duration_us);
#ifdef CONFIG_HOTPLUG_CPU
bool cpu_wait_death(unsigned int cpu, int seconds);

10
include/linux/cpuidle.h
View file

@ -85,7 +85,9 @@ struct cpuidle_device {
unsigned int cpu;
ktime_t next_hrtimer;
int last_state_idx;
int last_residency;
u64 poll_limit_ns;
struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX];
struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX];
struct cpuidle_driver_kobj *kobj_driver;
@ -119,6 +121,9 @@ struct cpuidle_driver {
/* the driver handles the cpus in cpumask */
struct cpumask *cpumask;
/* preferred governor to switch at register time */
const char *governor;
};
#ifdef CONFIG_CPU_IDLE
@ -132,6 +137,8 @@ extern int cpuidle_select(struct cpuidle_driver *drv,
extern int cpuidle_enter(struct cpuidle_driver *drv,
struct cpuidle_device *dev, int index);
extern void cpuidle_reflect(struct cpuidle_device *dev, int index);
extern u64 cpuidle_poll_time(struct cpuidle_driver *drv,
struct cpuidle_device *dev);
extern int cpuidle_register_driver(struct cpuidle_driver *drv);
extern struct cpuidle_driver *cpuidle_get_driver(void);
@ -166,6 +173,9 @@ static inline int cpuidle_enter(struct cpuidle_driver *drv,
struct cpuidle_device *dev, int index)
{return -ENODEV; }
static inline void cpuidle_reflect(struct cpuidle_device *dev, int index) { }
static inline u64 cpuidle_poll_time(struct cpuidle_driver *drv,
struct cpuidle_device *dev)
{return 0; }
static inline int cpuidle_register_driver(struct cpuidle_driver *drv)
{return -ENODEV; }
static inline struct cpuidle_driver *cpuidle_get_driver(void) {return NULL; }

16
include/linux/cpuidle_haltpoll.h Normal file
View file

@ -0,0 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CPUIDLE_HALTPOLL_H
#define _CPUIDLE_HALTPOLL_H
#ifdef CONFIG_ARCH_CPUIDLE_HALTPOLL
#include <asm/cpuidle_haltpoll.h>
#else
static inline void arch_haltpoll_enable(unsigned int cpu)
{
}
static inline void arch_haltpoll_disable(unsigned int cpu)
{
}
#endif
#endif

8
include/linux/idle_inject.h
View file

@ -20,10 +20,10 @@ int idle_inject_start(struct idle_inject_device *ii_dev);
void idle_inject_stop(struct idle_inject_device *ii_dev);
void idle_inject_set_duration(struct idle_inject_device *ii_dev,
unsigned int run_duration_ms,
unsigned int idle_duration_ms);
unsigned int run_duration_us,
unsigned int idle_duration_us);
void idle_inject_get_duration(struct idle_inject_device *ii_dev,
unsigned int *run_duration_ms,
unsigned int *idle_duration_ms);
unsigned int *run_duration_us,
unsigned int *idle_duration_us);
#endif /* __IDLE_INJECT_H__ */