From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34656) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eWfVe-000788-KA for qemu-devel@nongnu.org; Wed, 03 Jan 2018 04:38:55 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eWfVd-000752-NH for qemu-devel@nongnu.org; Wed, 03 Jan 2018 04:38:54 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60356) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eWfVd-00074E-Hi for qemu-devel@nongnu.org; Wed, 03 Jan 2018 04:38:53 -0500 From: Juan Quintela Date: Wed, 3 Jan 2018 10:38:27 +0100 Message-Id: <20180103093834.20879-8-quintela@redhat.com> In-Reply-To: <20180103093834.20879-1-quintela@redhat.com> References: <20180103093834.20879-1-quintela@redhat.com> Subject: [Qemu-devel] [PULL 07/14] migration: introduce postcopy-blocktime capability List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: dgilbert@redhat.com, lvivier@redhat.com, peterx@redhat.com, Alexey Perevalov From: Alexey Perevalov 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 Signed-off-by: Alexey Perevalov Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela --- migration/migration.c | 9 +++++++++ migration/migration.h | 1 + qapi/migration.json | 6 +++++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/migration/migration.c b/migration/migration.c index 19917a4b5b..fb876e9fca 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1499,6 +1499,15 @@ 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 663415fe48..9ab8d07004 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -201,6 +201,7 @@ 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 4cd3d13158..4d8ccdf776 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -352,12 +352,16 @@ # # @x-multifd: Use more than one fd for migration (since 2.11) # +# @postcopy-blocktime: Calculate downtime for postcopy live migration +# (since 2.12) +# # 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' ] } + 'block', 'return-path', 'pause-before-switchover', 'x-multifd', + 'postcopy-blocktime' ] } ## # @MigrationCapabilityStatus: -- 2.14.3