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[Qemu-devel] [PULL 16/16] migration: introduce postcopy-blocktime capabi
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PULL 16/16] migration: introduce postcopy-blocktime capability |
Date: |
Wed, 20 Sep 2017 12:46:39 +0200 |
From: Alexey Perevalov <address@hidden>
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Signed-off-by: Alexey Perevalov <address@hidden>
Signed-off-by: Juan Quintela <address@hidden>
---
migration/migration.c | 9 +++++++++
migration/migration.h | 1 +
qapi/migration.json | 5 ++++-
3 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/migration/migration.c b/migration/migration.c
index b9056ccbac..4ceded5a79 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1462,6 +1462,15 @@ bool migrate_zero_blocks(void)
return s->enabled_capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];
}
+bool migrate_postcopy_blocktime(void)
+{
+ MigrationState *s;
+
+ s = migrate_get_current();
+
+ return s->enabled_capabilities[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME];
+}
+
bool migrate_use_compression(void)
{
MigrationState *s;
diff --git a/migration/migration.h b/migration/migration.h
index 641290f51b..b84946f69e 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -191,6 +191,7 @@ int migrate_compress_level(void);
int migrate_compress_threads(void);
int migrate_decompress_threads(void);
bool migrate_use_events(void);
+bool migrate_postcopy_blocktime(void);
/* Sending on the return path - generic and then for each message type */
void migrate_send_rp_shut(MigrationIncomingState *mis,
diff --git a/qapi/migration.json b/qapi/migration.json
index f8b365e3f5..0f2af26a19 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -343,12 +343,15 @@
#
# @x-multifd: Use more than one fd for migration (since 2.11)
#
+# @postcopy-blocktime: Calculate downtime for postcopy live migration
+# (since 2.11)
+#
# Since: 1.2
##
{ 'enum': 'MigrationCapability',
'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',
- 'block', 'return-path', 'x-multifd' ] }
+ 'block', 'return-path', 'x-multifd', 'postcopy-blocktime' ] }
##
# @MigrationCapabilityStatus:
--
2.13.5
- [Qemu-devel] [PULL 10/16] bitmap: remove BITOP_WORD(), (continued)
- [Qemu-devel] [PULL 10/16] bitmap: remove BITOP_WORD(), Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 13/16] migration: pass MigrationIncomingState* into migration check functions, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 03/16] migration: Add comments to channel functions, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 05/16] migration: Add multifd capability, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 06/16] migration: Create x-multifd-channels parameter, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 08/16] migration: Create multifd migration threads, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 01/16] migration: Create migration_ioc_process_incoming(), Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 14/16] migration: fix hardcoded function name in error report, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 07/16] migration: Create x-multifd-page-count parameter, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 16/16] migration: introduce postcopy-blocktime capability,
Juan Quintela <=
- [Qemu-devel] [PULL 15/16] migration: split ufd_version_check onto receive/request features part, Juan Quintela, 2017/09/20
- [Qemu-devel] [PULL 11/16] bitmap: introduce bitmap_count_one(), Juan Quintela, 2017/09/20
- Re: [Qemu-devel] [PULL 00/16] Migration PULL request, Juan Quintela, 2017/09/20
- Re: [Qemu-devel] [PULL 00/16] Migration PULL request, no-reply, 2017/09/20