baa609832e
Setup a negative feedback system when vCPU thread handling KVM_EXIT_DIRTY_RING_FULL exit by introducing throttle_us_per_full field in struct CPUState. Sleep throttle_us_per_full microseconds to throttle vCPU if dirtylimit is in service. Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <977e808e03a1cef5151cae75984658b6821be618.1656177590.git.huangy81@chinatelecom.cn> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/*
|
|
* Dirty page rate limit common functions
|
|
*
|
|
* Copyright (c) 2022 CHINA TELECOM CO.,LTD.
|
|
*
|
|
* Authors:
|
|
* Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
|
|
*
|
|
* 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 QEMU_DIRTYRLIMIT_H
|
|
#define QEMU_DIRTYRLIMIT_H
|
|
|
|
#define DIRTYLIMIT_CALC_TIME_MS 1000 /* 1000ms */
|
|
|
|
int64_t vcpu_dirty_rate_get(int cpu_index);
|
|
void vcpu_dirty_rate_stat_start(void);
|
|
void vcpu_dirty_rate_stat_stop(void);
|
|
void vcpu_dirty_rate_stat_initialize(void);
|
|
void vcpu_dirty_rate_stat_finalize(void);
|
|
|
|
void dirtylimit_state_lock(void);
|
|
void dirtylimit_state_unlock(void);
|
|
void dirtylimit_state_initialize(void);
|
|
void dirtylimit_state_finalize(void);
|
|
bool dirtylimit_in_service(void);
|
|
bool dirtylimit_vcpu_index_valid(int cpu_index);
|
|
void dirtylimit_process(void);
|
|
void dirtylimit_change(bool start);
|
|
void dirtylimit_set_vcpu(int cpu_index,
|
|
uint64_t quota,
|
|
bool enable);
|
|
void dirtylimit_set_all(uint64_t quota,
|
|
bool enable);
|
|
void dirtylimit_vcpu_execute(CPUState *cpu);
|
|
#endif
|