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[Qemu-devel] [PATCH V7 RESEND 13/17] COLO: flush host dirty ram from cac
From: |
Zhang Chen |
Subject: |
[Qemu-devel] [PATCH V7 RESEND 13/17] COLO: flush host dirty ram from cache |
Date: |
Tue, 15 May 2018 00:54:20 +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: zhanghailiang <address@hidden>
---
migration/ram.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/migration/ram.c b/migration/ram.c
index 4235a8f24d..21027c5b4d 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2786,6 +2786,7 @@ 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;
@@ -2806,10 +2807,12 @@ void colo_release_ram_cache(void)
{
RAMBlock *block;
+ memory_global_dirty_log_stop();
QLIST_FOREACH_RCU(block, &ram_list.blocks, next) {
g_free(block->bmap);
block->bmap = NULL;
}
+
rcu_read_lock();
QLIST_FOREACH_RCU(block, &ram_list.blocks, next) {
if (block->colo_cache) {
@@ -3042,6 +3045,15 @@ static void colo_flush_ram_cache(void)
void *src_host;
unsigned long offset = 0;
+ memory_global_dirty_log_sync();
+ qemu_mutex_lock(&ram_state->bitmap_mutex);
+ rcu_read_lock();
+ RAMBLOCK_FOREACH(block) {
+ migration_bitmap_sync_range(ram_state, block, 0, block->used_length);
+ }
+ rcu_read_unlock();
+ qemu_mutex_unlock(&ram_state->bitmap_mutex);
+
trace_colo_flush_ram_cache_begin(ram_state->migration_dirty_pages);
rcu_read_lock();
block = QLIST_FIRST_RCU(&ram_list.blocks);
--
2.17.0
- Re: [Qemu-devel] [PATCH V7 RESEND 06/17] COLO: Remove colo_state migration struct, (continued)
- [Qemu-devel] [PATCH V7 RESEND 07/17] COLO: Load dirty pages into SVM's RAM cache firstly, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 08/17] ram/COLO: Record the dirty pages that SVM received, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 09/17] COLO: Flush memory data from ram cache, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 10/17] qmp event: Add COLO_EXIT event to notify users while exited COLO, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 11/17] qapi: Add new command to query colo status, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 12/17] savevm: split the process of different stages for loadvm/savevm, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 13/17] COLO: flush host dirty ram from cache,
Zhang Chen <=
- [Qemu-devel] [PATCH V7 RESEND 14/17] filter: Add handle_event method for NetFilterClass, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 16/17] COLO: notify net filters about checkpoint/failover event, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 15/17] filter-rewriter: handle checkpoint and failover event, Zhang Chen, 2018/05/14
- [Qemu-devel] [PATCH V7 RESEND 17/17] COLO: quick failover process by kick COLO thread, Zhang Chen, 2018/05/14
- Re: [Qemu-devel] [PATCH V7 RESEND 00/17] COLO: integrate colo frame with block replication and COLO proxy, Dr. David Alan Gilbert, 2018/05/16