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abstract out dirty log change logic into function global_dirty_log_change. abstract out dirty page rate calculation logic via dirty-ring into function vcpu_calculate_dirtyrate. abstract out mathematical dirty page rate calculation into do_calculate_dirtyrate, decouple it from DirtyStat. rename set_sample_page_period to dirty_stat_wait, which is well-understood and will be reused in dirtylimit. handle cpu hotplug/unplug scenario during measurement of dirty page rate. export util functions outside migration. Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <7b6f6f4748d5b3d017b31a0429e630229ae97538.1656177590.git.huangy81@chinatelecom.cn> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
29 lines
785 B
C
29 lines
785 B
C
/*
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* dirty page rate helper functions
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*
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* Copyright (c) 2022 CHINA TELECOM CO.,LTD.
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*
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* Authors:
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* Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_DIRTYRATE_H
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#define QEMU_DIRTYRATE_H
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typedef struct VcpuStat {
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int nvcpu; /* number of vcpu */
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DirtyRateVcpu *rates; /* array of dirty rate for each vcpu */
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} VcpuStat;
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int64_t vcpu_calculate_dirtyrate(int64_t calc_time_ms,
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VcpuStat *stat,
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unsigned int flag,
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bool one_shot);
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void global_dirty_log_change(unsigned int flag,
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bool start);
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#endif
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