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| author | Hyman Huang(黄勇) | 2022-06-25 19:38:35 +0200 |
|---|---|---|
| committer | Dr. David Alan Gilbert | 2022-07-20 13:15:08 +0200 |
| commit | baa609832e1849915b62be2abfbdc1d0e5909a7b (patch) | |
| tree | 3a679a7051cd4547dabd3afcf1b777bdb1aae60f /include/hw/core | |
| parent | accel/kvm/kvm-all: Introduce kvm_dirty_ring_size function (diff) | |
| download | qemu-baa609832e1849915b62be2abfbdc1d0e5909a7b.tar.gz qemu-baa609832e1849915b62be2abfbdc1d0e5909a7b.tar.xz qemu-baa609832e1849915b62be2abfbdc1d0e5909a7b.zip | |
softmmu/dirtylimit: Implement virtual CPU throttle
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>
Diffstat (limited to 'include/hw/core')
| -rw-r--r-- | include/hw/core/cpu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 996f94059f..500503da13 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -418,6 +418,12 @@ struct CPUState { */ bool throttle_thread_scheduled; + /* + * Sleep throttle_us_per_full microseconds once dirty ring is full + * if dirty page rate limit is enabled. + */ + int64_t throttle_us_per_full; + bool ignore_memory_transaction_failures; /* Used for user-only emulation of prctl(PR_SET_UNALIGN). */ |