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[Qemu-devel] [PULL 14/26] COLO: flush host dirty ram from cache
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PULL 14/26] COLO: flush host dirty ram from cache |
Date: |
Mon, 15 Oct 2018 16:46:14 +0800 |
From: zhanghailiang <address@hidden>
Don't need to flush all VM's ram from cache, only
flush the dirty pages since last checkpoint
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
migration/ram.c | 9 +++++++++
1 file changed, 9 insertions(+)
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);
--
2.5.0
- [Qemu-devel] [PULL 00/26] Net patches, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 01/26] filter-rewriter: Add TCP state machine and fix memory leak in connection_track_table, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 09/26] COLO: Flush memory data from ram cache, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 02/26] colo-compare: implement the process of checkpoint, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 08/26] ram/COLO: Record the dirty pages that SVM received, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 11/26] qapi/migration.json: Rename COLO unknown mode to none mode., Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 04/26] COLO: integrate colo compare with colo frame, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 10/26] qmp event: Add COLO_EXIT event to notify users while exited COLO, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 05/26] COLO: Add block replication into colo process, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 14/26] COLO: flush host dirty ram from cache,
Jason Wang <=
- [Qemu-devel] [PULL 18/26] COLO: quick failover process by kick COLO thread, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 03/26] colo-compare: use notifier to notify packets comparing result, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 15/26] filter: Add handle_event method for NetFilterClass, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 19/26] docs: Add COLO status diagram to COLO-FT.txt, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 13/26] savevm: split the process of different stages for loadvm/savevm, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 12/26] qapi: Add new command to query colo status, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 17/26] COLO: notify net filters about checkpoint/failover event, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 07/26] COLO: Load dirty pages into SVM's RAM cache firstly, Jason Wang, 2018/10/15
- [Qemu-devel] [PULL 20/26] clean up callback when del virtqueue, Jason Wang, 2018/10/15