Re: [PATCH v5 01/12] migration/dirtyrate: setup up query-dirtyrate framwork

[Dr. David Alan Gilbert]

* Chuan Zheng (zhengchuan@huawei.com) wrote:
> Add get_dirtyrate_thread() functions to setup query-dirtyrate
> framework.
> 
> Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
> Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

> ---
>  migration/dirtyrate.c | 39 +++++++++++++++++++++++++++++++++++++++
>  migration/dirtyrate.h | 32 ++++++++++++++++++++++++++++++++
>  migration/meson.build |  1 +
>  3 files changed, 72 insertions(+)
>  create mode 100644 migration/dirtyrate.c
>  create mode 100644 migration/dirtyrate.h
> 
> diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
> new file mode 100644
> index 0000000..366f4e9
> --- /dev/null
> +++ b/migration/dirtyrate.c
> @@ -0,0 +1,39 @@
> +/*
> + * Dirtyrate implement code
> + *
> + * Copyright (c) 2017-2020 HUAWEI TECHNOLOGIES CO.,LTD.
> + *
> + * Authors:
> + *  Chuan Zheng <zhengchuan@huawei.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "crypto/hash.h"
> +#include "crypto/random.h"
> +#include "qemu/config-file.h"
> +#include "exec/memory.h"
> +#include "exec/ramblock.h"
> +#include "exec/target_page.h"
> +#include "qemu/rcu_queue.h"
> +#include "qapi/qapi-commands-migration.h"
> +#include "migration.h"
> +#include "dirtyrate.h"
> +
> +static void calculate_dirtyrate(struct DirtyRateConfig config)
> +{
> +    /* todo */
> +    return;
> +}
> +
> +void *get_dirtyrate_thread(void *arg)
> +{
> +    struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg;
> +
> +    calculate_dirtyrate(config);
> +
> +    return NULL;
> +}
> diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h
> new file mode 100644
> index 0000000..33669b7
> --- /dev/null
> +++ b/migration/dirtyrate.h
> @@ -0,0 +1,32 @@
> +/*
> + *  Dirtyrate common functions
> + *
> + *  Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD.
> + *
> + *  Authors:
> + *  Chuan Zheng <zhengchuan@huawei.com>
> + *
> + *  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_MIGRATION_DIRTYRATE_H
> +#define QEMU_MIGRATION_DIRTYRATE_H
> +
> +/*
> + * Sample 512 pages per GB as default.
> + * TODO: Make it configurable.
> + */
> +#define DIRTYRATE_DEFAULT_SAMPLE_PAGES            512
> +
> +/* Take 1s as default for calculation duration */
> +#define DEFAULT_FETCH_DIRTYRATE_TIME_SEC          1
> +
> +struct DirtyRateConfig {
> +    uint64_t sample_pages_per_gigabytes; /* sample pages per GB */
> +    int64_t sample_period_seconds; /* time duration between two sampling */
> +};
> +
> +void *get_dirtyrate_thread(void *arg);
> +#endif
> +
> diff --git a/migration/meson.build b/migration/meson.build
> index ac8ff14..30cc6c3 100644
> --- a/migration/meson.build
> +++ b/migration/meson.build
> @@ -21,6 +21,7 @@ softmmu_ss.add(files(
>    'channel.c',
>    'colo-failover.c',
>    'colo.c',
> +  'dirtyrate.c',
>    'exec.c',
>    'fd.c',
>    'global_state.c',
> -- 
> 1.8.3.1
> 
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK