{"id":815711,"url":"http://patchwork.ozlabs.org/api/patches/815711/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/1505839684-10046-6-git-send-email-a.perevalov@samsung.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1505839684-10046-6-git-send-email-a.perevalov@samsung.com>","list_archive_url":null,"date":"2017-09-19T16:47:59","name":"[v10,05/10] migration: introduce postcopy-blocktime capability","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c9d7ea0aa95b9ff9175044cdede65c177a6d9cb5","submitter":{"id":18164,"url":"http://patchwork.ozlabs.org/api/people/18164/?format=json","name":"Alexey Perevalov","email":"a.perevalov@samsung.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/1505839684-10046-6-git-send-email-a.perevalov@samsung.com/mbox/","series":[{"id":3930,"url":"http://patchwork.ozlabs.org/api/series/3930/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=3930","date":"2017-09-19T16:48:03","name":"calculate blocktime for postcopy live migration","version":10,"mbox":"http://patchwork.ozlabs.org/series/3930/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/815711/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/815711/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; 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eggs.gnu.org: GNU/Linux 3.x [fuzzy]","X-Received-From":"210.118.77.11","Subject":"[Qemu-devel] [PATCH v10 05/10] migration: introduce\n\tpostcopy-blocktime capability","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"heetae82.ahn@samsung.com, quintela@redhat.com,\n\tAlexey Perevalov , peterx@redhat.com,\n\tdgilbert@redhat.com, i.maximets@samsung.com","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"Right now it could be used on destination side to\nenable vCPU blocktime calculation for postcopy live migration.\nvCPU blocktime - it's time since vCPU thread was put into\ninterruptible sleep, till memory page was copied and thread awake.\n\nReviewed-by: Dr. David Alan Gilbert \nSigned-off-by: Alexey Perevalov \n---\n migration/migration.c | 9 +++++++++\n migration/migration.h | 1 +\n qapi/migration.json | 5 ++++-\n 3 files changed, 14 insertions(+), 1 deletion(-)","diff":"diff --git a/migration/migration.c b/migration/migration.c\nindex e820d47..4f029e8 100644\n--- a/migration/migration.c\n+++ b/migration/migration.c\n@@ -1380,6 +1380,15 @@ bool migrate_zero_blocks(void)\n return s->enabled_capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];\n }\n \n+bool migrate_postcopy_blocktime(void)\n+{\n+ MigrationState *s;\n+\n+ s = migrate_get_current();\n+\n+ return s->enabled_capabilities[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME];\n+}\n+\n bool migrate_use_compression(void)\n {\n MigrationState *s;\ndiff --git a/migration/migration.h b/migration/migration.h\nindex 148c9fa..56bf33c 100644\n--- a/migration/migration.h\n+++ b/migration/migration.h\n@@ -184,6 +184,7 @@ int migrate_compress_level(void);\n int migrate_compress_threads(void);\n int migrate_decompress_threads(void);\n bool migrate_use_events(void);\n+bool migrate_postcopy_blocktime(void);\n \n /* Sending on the return path - generic and then for each message type */\n void migrate_send_rp_shut(MigrationIncomingState *mis,\ndiff --git a/qapi/migration.json b/qapi/migration.json\nindex ee2b3b8..2e4a15d 100644\n--- a/qapi/migration.json\n+++ b/qapi/migration.json\n@@ -341,12 +341,15 @@\n # @return-path: If enabled, migration will use the return path even\n # for precopy. (since 2.10)\n #\n+# @postcopy-blocktime: Calculate downtime for postcopy live migration\n+# (since 2.11)\n+#\n # Since: 1.2\n ##\n { 'enum': 'MigrationCapability',\n 'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',\n 'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',\n- 'block', 'return-path' ] }\n+ 'block', 'return-path', 'postcopy-blocktime' ] }\n \n ##\n # @MigrationCapabilityStatus:\n","prefixes":["v10","05/10"]}