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[Qemu-devel] [PATCH 11/12] ram: iterate phase
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PATCH 11/12] ram: iterate phase |
Date: |
Thu, 28 Jun 2012 21:22:09 +0200 |
We only need to synchronize the bitmap when the number of dirty pages is low.
Not every time that we call the function.
Signed-off-by: Juan Quintela <address@hidden>
---
arch_init.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch_init.c b/arch_init.c
index fe843a7..8299c15 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -348,8 +348,6 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
int i;
uint64_t expected_time;
- memory_global_sync_dirty_bitmap(get_system_memory());
-
bytes_transferred_last = bytes_transferred;
bwidth = qemu_get_clock_ns(rt_clock);
@@ -397,7 +395,12 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
DPRINTF("ram_save_live: expected(%ld) <= max(%ld)?\n", expected_time,
migrate_max_downtime());
- return expected_time <= migrate_max_downtime();
+ if (expected_time <= migrate_max_downtime()) {
+ memory_global_sync_dirty_bitmap(get_system_memory());
+
+ return expected_time <= migrate_max_downtime();
+ }
+ return 0;
}
static int ram_save_complete(QEMUFile *f, void *opaque)
--
1.7.10.2
- [Qemu-devel] [PATCH 01/12] savevm: Use a struct to pass all handlers, (continued)
- [Qemu-devel] [PATCH 01/12] savevm: Use a struct to pass all handlers, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 02/12] savevm: Live migration handlers register the struct directly, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 03/12] savevm: remove SaveSetParamsHandler, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 04/12] savevm: remove SaveLiveStateHandler, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 05/12] savevm: Refactor cancel operation in its own operation, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 06/12] savevm: introduce is_active method, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 09/12] ram: save_live_setup() don't need to sent pages, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 08/12] savevm: split save_live into stage2 and stage3, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 10/12] ram: save_live_complete() only do one loop, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 11/12] ram: iterate phase,
Juan Quintela <=
- [Qemu-devel] [PATCH 07/12] savevm: split save_live_setup from save_live_state, Juan Quintela, 2012/06/28
- [Qemu-devel] [PATCH 12/12] ram: save_live_setup() we don't need to synchronize the dirty bitmap., Juan Quintela, 2012/06/28