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[Qemu-devel] [PATCH v10 05/10] migration: introduce postcopy-blocktime c
From: |
Alexey Perevalov |
Subject: |
[Qemu-devel] [PATCH v10 05/10] migration: introduce postcopy-blocktime capability |
Date: |
Tue, 19 Sep 2017 19:47:59 +0300 |
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>
---
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 e820d47..4f029e8 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1380,6 +1380,15 @@ 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 148c9fa..56bf33c 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -184,6 +184,7 @@ 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 ee2b3b8..2e4a15d 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -341,12 +341,15 @@
# @return-path: If enabled, migration will use the return path even
# for precopy. (since 2.10)
#
+# @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' ] }
+ 'block', 'return-path', 'postcopy-blocktime' ] }
##
# @MigrationCapabilityStatus:
--
1.9.1
- [Qemu-devel] [PATCH v10 08/10] migration: postcopy_blocktime documentation, (continued)
Message not available
- [Qemu-devel] [PATCH v10 10/10] migration: add postcopy total blocktime into query-migrate, Alexey Perevalov, 2017/09/19
- Re: [Qemu-devel] [PATCH v10 10/10] migration: add postcopy total blocktime into query-migrate, Eric Blake, 2017/09/19
- Re: [Qemu-devel] [PATCH v10 10/10] migration: add postcopy total blocktime into query-migrate, Dr. David Alan Gilbert, 2017/09/21
- Re: [Qemu-devel] [PATCH v10 10/10] migration: add postcopy total blocktime into query-migrate, Alexey Perevalov, 2017/09/21
- Re: [Qemu-devel] [PATCH v10 10/10] migration: add postcopy total blocktime into query-migrate, Dr. David Alan Gilbert, 2017/09/21
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- [Qemu-devel] [PATCH v10 05/10] migration: introduce postcopy-blocktime capability,
Alexey Perevalov <=
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