61a7fadc31
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>
84 lines
2.3 KiB
Diff
84 lines
2.3 KiB
Diff
From 18102266fb18c4bfcdd4760e7111ca03a7520588 Mon Sep 17 00:00:00 2001
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From: Chuan Zheng <zhengchuan@huawei.com>
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Date: Wed, 16 Sep 2020 14:22:05 +0800
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Subject: [PATCH] migration/dirtyrate: Implement calculate_dirtyrate() function
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Implement calculate_dirtyrate() function.
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Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
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Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
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Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Reviewed-by: Li Qiang <liq3ea@gmail.com>
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Message-Id: <1600237327-33618-11-git-send-email-zhengchuan@huawei.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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---
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migration/dirtyrate.c | 45 +++++++++++++++++++++++++++++++++++++++++--
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1 file changed, 43 insertions(+), 2 deletions(-)
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diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
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index 485d6467c9..c7a389a527 100644
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--- a/migration/dirtyrate.c
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+++ b/migration/dirtyrate.c
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@@ -162,6 +162,21 @@ static void get_ramblock_dirty_info(RAMBlock *block,
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strcpy(info->idstr, qemu_ram_get_idstr(block));
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}
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+static void free_ramblock_dirty_info(struct RamblockDirtyInfo *infos, int count)
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+{
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+ int i;
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+
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+ if (!infos) {
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+ return;
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+ }
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+
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+ for (i = 0; i < count; i++) {
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+ g_free(infos[i].sample_page_vfn);
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+ g_free(infos[i].hash_result);
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+ }
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+ g_free(infos);
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+}
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+
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static bool skip_sample_ramblock(RAMBlock *block)
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{
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/*
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@@ -287,8 +302,34 @@ static bool compare_page_hash_info(struct RamblockDirtyInfo *info,
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static void calculate_dirtyrate(struct DirtyRateConfig config)
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{
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- /* todo */
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- return;
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+ struct RamblockDirtyInfo *block_dinfo = NULL;
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+ int block_count = 0;
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+ int64_t msec = 0;
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+ int64_t initial_time;
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+
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+ rcu_register_thread();
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+ reset_dirtyrate_stat();
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+ rcu_read_lock();
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+ initial_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
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+ if (!record_ramblock_hash_info(&block_dinfo, config, &block_count)) {
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+ goto out;
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+ }
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+ rcu_read_unlock();
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+
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+ msec = config.sample_period_seconds * 1000;
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+ msec = set_sample_page_period(msec, initial_time);
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+
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+ rcu_read_lock();
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+ if (!compare_page_hash_info(block_dinfo, block_count)) {
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+ goto out;
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+ }
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+
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+ update_dirtyrate(msec);
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+
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+out:
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+ rcu_read_unlock();
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+ free_ramblock_dirty_info(block_dinfo, block_count);
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+ rcu_unregister_thread();
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}
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void *get_dirtyrate_thread(void *arg)
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--
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2.27.0
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