diff options
| author | Alexey Perevalov <a.perevalov@samsung.com> | 2018-03-22 21:17:22 +0300 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2018-04-25 18:02:12 +0100 |
| commit | f22f928ec929c425c5aa402b5cc4d6d1fa4be238 (patch) | |
| tree | 9d1ced39355b3d2c1a6e7258538216ad60f84242 | |
| parent | 4743c23509a51bd4ee85cc272287a41917d1be35 (diff) | |
migration: introduce postcopy-blocktime capability
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 <dgilbert@redhat.com>
Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <1521742647-25550-2-git-send-email-a.perevalov@samsung.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
| -rw-r--r-- | migration/migration.c | 9 | ||||
| -rw-r--r-- | migration/migration.h | 1 | ||||
| -rw-r--r-- | qapi/migration.json | 6 |
3 files changed, 15 insertions, 1 deletions
diff --git a/migration/migration.c b/migration/migration.c index 52a5092add..bf2e8db9c7 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1541,6 +1541,15 @@ 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 8d2f320c48..46a50bc789 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -230,6 +230,7 @@ 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 9d0bf82cf4..24bfc190ba 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -354,16 +354,20 @@ # # @x-multifd: Use more than one fd for migration (since 2.11) # +# # @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps. # (since 2.12) # +# @postcopy-blocktime: Calculate downtime for postcopy live migration +# (since 2.13) +# # 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', 'pause-before-switchover', 'x-multifd', - 'dirty-bitmaps' ] } + 'dirty-bitmaps', 'postcopy-blocktime' ] } ## # @MigrationCapabilityStatus: |