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[PATCH v5 10/12] migration/dirtyrate: Implement calculate_dirtyrate() fu
From: |
Chuan Zheng |
Subject: |
[PATCH v5 10/12] migration/dirtyrate: Implement calculate_dirtyrate() function |
Date: |
Mon, 24 Aug 2020 17:14:38 +0800 |
Implement calculate_dirtyrate() function.
Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
---
migration/dirtyrate.c | 45 +++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 43 insertions(+), 2 deletions(-)
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index d1c0a78..9f52f5f 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -171,6 +171,21 @@ 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 struct RamblockDirtyInfo *
alloc_ramblock_dirty_info(int *block_index,
struct RamblockDirtyInfo *block_dinfo)
@@ -316,8 +331,34 @@ static int compare_page_hash_info(struct RamblockDirtyInfo
*info,
static void calculate_dirtyrate(struct DirtyRateConfig config)
{
- /* todo */
- return;
+ struct RamblockDirtyInfo *block_dinfo = NULL;
+ int block_index = 0;
+ int64_t msec = 0;
+ int64_t initial_time;
+
+ rcu_register_thread();
+ reset_dirtyrate_stat();
+ initial_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
+ rcu_read_lock();
+ if (record_ramblock_hash_info(&block_dinfo, config, &block_index) < 0) {
+ 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_index) < 0) {
+ goto out;
+ }
+
+ update_dirtyrate(msec);
+
+out:
+ rcu_read_unlock();
+ free_ramblock_dirty_info(block_dinfo, block_index + 1);
+ rcu_unregister_thread();
}
void *get_dirtyrate_thread(void *arg)
--
1.8.3.1
- Re: [PATCH v5 06/12] migration/dirtyrate: Record hash results for each sampled page, (continued)
[PATCH v5 07/12] migration/dirtyrate: Compare page hash results for recorded sampled page, Chuan Zheng, 2020/08/24
[PATCH v5 09/12] migration/dirtyrate: Implement get_sample_page_period() and block_sample_page_period(), Chuan Zheng, 2020/08/24
[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 <=
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