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[PATCH v5 03/12] migration/dirtyrate: Add RamlockDirtyInfo to store samp
From: |
Chuan Zheng |
Subject: |
[PATCH v5 03/12] migration/dirtyrate: Add RamlockDirtyInfo to store sampled page info |
Date: |
Tue, 25 Aug 2020 09:40:41 +0800 |
Add RamlockDirtyInfo to store sampled page info of each ramblock.
Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
---
migration/dirtyrate.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h
index 33669b7..dc45419 100644
--- a/migration/dirtyrate.h
+++ b/migration/dirtyrate.h
@@ -19,6 +19,11 @@
*/
#define DIRTYRATE_DEFAULT_SAMPLE_PAGES 512
+/*
+ * Record ramblock idstr
+ */
+#define RAMBLOCK_INFO_MAX_LEN 256
+
/* Take 1s as default for calculation duration */
#define DEFAULT_FETCH_DIRTYRATE_TIME_SEC 1
@@ -27,6 +32,19 @@ struct DirtyRateConfig {
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 4K-page */
+ 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
--
1.8.3.1
- Re: [PATCH v5 09/12] migration/dirtyrate: Implement get_sample_page_period() and block_sample_page_period(), (continued)
- [PATCH v5 12/12] migration/dirtyrate: Add trace_calls to make it easier to debug, Chuan Zheng, 2020/08/24
- [PATCH v5 10/12] migration/dirtyrate: Implement calculate_dirtyrate() function, Chuan Zheng, 2020/08/24
- Re: [PATCH v5 00/12] *** A Method for evaluating dirty page rate ***, no-reply, 2020/08/24
- [PATCH v5 00/12] *** A Method for evaluating dirty page rate ***, Chuan Zheng, 2020/08/24
- [PATCH v5 06/12] migration/dirtyrate: Record hash results for each sampled page, Chuan Zheng, 2020/08/24
[PATCH v5 02/12] migration/dirtyrate: add DirtyRateStatus to denote calculation status, Chuan Zheng, 2020/08/24