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migration/dirtyrate: Implement calculate_dirtyrate() function

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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>
This commit is contained in:
Huawei Technologies Co., Ltd 2020-09-16 14:22:05 +08:00 committed by Euler Robot
parent 731a09dc2d
commit 61a7fadc31
1 changed files with 83 additions and 0 deletions
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83
migration-dirtyrate-Implement-calculate_dirtyrate-fu.patch Normal file
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@ -0,0 +1,83 @@
From 18102266fb18c4bfcdd4760e7111ca03a7520588 Mon Sep 17 00:00:00 2001
From: Chuan Zheng <zhengchuan@huawei.com>
Date: Wed, 16 Sep 2020 14:22:05 +0800
Subject: [PATCH] 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>
---
migration/dirtyrate.c | 45 +++++++++++++++++++++++++++++++++++++++++--
1 file changed, 43 insertions(+), 2 deletions(-)
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index 485d6467c9..c7a389a527 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -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)
--
2.27.0