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migration/dirtyrate: Implement calculate_dirtyrate() function 

Implement calculate_dirtyrate() function.

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>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-11-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
master
Chuan Zheng 2020-09-16 14:22:05 +08:00 committed by Dr. David Alan Gilbert
parent eca582249c
commit cf0bbb49d8
1 changed files with 43 additions and 2 deletions
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45
migration/dirtyrate.c
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@ -162,6 +162,21 @@ static void get_ramblock_dirty_info(RAMBlock *block,
strcpy(info->idstr, qemu_ram_get_idstr(block));
}
static void free_ramblock_dirty_info(struct RamblockDirtyInfo *infos, int count)
{
int i;
if (!infos) {
return;
}
for (i = 0; i < count; i++) {
g_free(infos[i].sample_page_vfn);
g_free(infos[i].hash_result);
}
g_free(infos);
}
static bool skip_sample_ramblock(RAMBlock *block)
{
/*
@ -287,8 +302,34 @@ static bool compare_page_hash_info(struct RamblockDirtyInfo *info,
static void calculate_dirtyrate(struct DirtyRateConfig config)
{
/* todo */
return;
struct RamblockDirtyInfo *block_dinfo = NULL;
int block_count = 0;
int64_t msec = 0;
int64_t initial_time;
rcu_register_thread();
reset_dirtyrate_stat();
rcu_read_lock();
initial_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
if (!record_ramblock_hash_info(&block_dinfo, config, &block_count)) {
goto out;
}
rcu_read_unlock();
msec = config.sample_period_seconds * 1000;
msec = set_sample_page_period(msec, initial_time);
rcu_read_lock();
if (!compare_page_hash_info(block_dinfo, block_count)) {
goto out;
}
update_dirtyrate(msec);
out:
rcu_read_unlock();
free_ramblock_dirty_info(block_dinfo, block_count);
rcu_unregister_thread();
}
void *get_dirtyrate_thread(void *arg)