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| author | Hyman Huang(黄勇) <huangy81@chinatelecom.cn> | 2022-06-26 01:38:32 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2022-07-20 12:15:08 +0100 |
| commit | 8244166dec65eb295d09787021522d38171b06c7 (patch) | |
| tree | 15bdc087e456715c7e08ad682319f3682c6e23dc /include | |
| parent | ab1a161fe36be08eb1fbd0bc404e51a99e9d1471 (diff) | |
| download | qemu-8244166dec65eb295d09787021522d38171b06c7.zip qemu-8244166dec65eb295d09787021522d38171b06c7.tar.gz qemu-8244166dec65eb295d09787021522d38171b06c7.tar.bz2 | |
migration/dirtyrate: Refactor dirty page rate calculation
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sysemu/dirtyrate.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/sysemu/dirtyrate.h b/include/sysemu/dirtyrate.h new file mode 100644 index 0000000..4d3b9a4 --- /dev/null +++ b/include/sysemu/dirtyrate.h @@ -0,0 +1,28 @@ +/* + * dirty page rate helper 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_DIRTYRATE_H +#define QEMU_DIRTYRATE_H + +typedef struct VcpuStat { + int nvcpu; /* number of vcpu */ + DirtyRateVcpu *rates; /* array of dirty rate for each vcpu */ +} VcpuStat; + +int64_t vcpu_calculate_dirtyrate(int64_t calc_time_ms, + VcpuStat *stat, + unsigned int flag, + bool one_shot); + +void global_dirty_log_change(unsigned int flag, + bool start); +#endif |