[PATCH 07/26] migration: Refactor auto-converge capability logic

From: Hyman Huang(黄勇) <yong.huang(a)smartx.com&gt; Check if block migration is running before throttling guest down in auto-converge way. Note that this modification is kind of like code clean, because block migration does not depend on auto-converge capability, so the order of checks can be adjusted. Signed-off-by: Hyman Huang(黄勇) <yong.huang(a)smartx.com&gt; Acked-by: Peter Xu <peterx(a)redhat.com&gt; Reviewed-by: Juan Quintela <quintela(a)redhat.com&gt; Message-Id: <168618975839.6361.17407633874747688653-5(a)git.sr.ht&gt; Signed-off-by: Juan Quintela <quintela(a)redhat.com&gt; --- migration/ram.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/migration/ram.c b/migration/ram.c index 0ada6477e8..f31de47a47 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -995,7 +995,11 @@ static void migration_trigger_throttle(RAMState *rs) /* During block migration the auto-converge logic incorrectly detects * that ram migration makes no progress. Avoid this by disabling the * throttling logic during the bulk phase of block migration. */ - if (migrate_auto_converge() && !blk_mig_bulk_active()) { + if (blk_mig_bulk_active()) { + return; + } + + if (migrate_auto_converge()) { /* The following detection logic can be refined later. For now: Check to see if the ratio between dirtied bytes and the approx. amount of bytes that just got transferred since the last time -- 2.40.1