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authorzhanghailiang <zhang.zhanghailiang@huawei.com>2018-09-03 12:38:55 +0800
committerJason Wang <jasowang@redhat.com>2018-10-19 11:15:03 +0800
commitd1955d22197615eb65ec7b7ddc1242e5103f5b50 (patch)
tree7a9f2092f60154544d38506f603483c386a48b19 /migration
parent3f6df99d9dc8ce33deae1835e96e659063fa3037 (diff)
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COLO: flush host dirty ram from cache
Don't need to flush all VM's ram from cache, only flush the dirty pages since last checkpoint Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'migration')
-rw-r--r--migration/ram.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/migration/ram.c b/migration/ram.c
index 477853d..7e7deec 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3714,6 +3714,7 @@ int colo_init_ram_cache(void)
}
ram_state = g_new0(RAMState, 1);
ram_state->migration_dirty_pages = 0;
+ memory_global_dirty_log_start();
return 0;
@@ -3735,6 +3736,7 @@ void colo_release_ram_cache(void)
{
RAMBlock *block;
+ memory_global_dirty_log_stop();
RAMBLOCK_FOREACH_MIGRATABLE(block) {
g_free(block->bmap);
block->bmap = NULL;
@@ -3985,6 +3987,13 @@ static void colo_flush_ram_cache(void)
void *src_host;
unsigned long offset = 0;
+ memory_global_dirty_log_sync();
+ rcu_read_lock();
+ RAMBLOCK_FOREACH_MIGRATABLE(block) {
+ migration_bitmap_sync_range(ram_state, block, 0, block->used_length);
+ }
+ rcu_read_unlock();
+
trace_colo_flush_ram_cache_begin(ram_state->migration_dirty_pages);
rcu_read_lock();
block = QLIST_FIRST_RCU(&ram_list.blocks);