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migration/dirtyrate: Add RamblockDirtyInfo to store sampled page info 

Add RamblockDirtyInfo to store sampled page info of each ramblock.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-4-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Chuan Zheng 2020-09-16 14:21:58 +08:00 committed by Dr. David Alan Gilbert
parent 7df3aa3083
commit a2635f0a75
1 changed files with 18 additions and 0 deletions
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18
migration/dirtyrate.h
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@ -19,10 +19,28 @@
*/
#define DIRTYRATE_DEFAULT_SAMPLE_PAGES 512
/*
* Record ramblock idstr
*/
#define RAMBLOCK_INFO_MAX_LEN 256
struct DirtyRateConfig {
uint64_t sample_pages_per_gigabytes; /* sample pages per GB */
int64_t sample_period_seconds; /* time duration between two sampling */
};
/*
* Store dirtypage info for each ramblock.
*/
struct RamblockDirtyInfo {
char idstr[RAMBLOCK_INFO_MAX_LEN]; /* idstr for each ramblock */
uint8_t *ramblock_addr; /* base address of ramblock we measure */
uint64_t ramblock_pages; /* ramblock size in TARGET_PAGE_SIZE */
uint64_t *sample_page_vfn; /* relative offset address for sampled page */
uint64_t sample_pages_count; /* count of sampled pages */
uint64_t sample_dirty_count; /* count of dirty pages we measure */
uint32_t *hash_result; /* array of hash result for sampled pages */
};
void *get_dirtyrate_thread(void *arg);
#endif