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Tue, 28 Apr 2020 12:42:19 -0700 (PDT) Received: from xz-x1.hitronhub.home ([2607:9880:19c0:32::2]) by smtp.gmail.com with ESMTPSA id n92sm14133460qtd.68.2020.04.28.12.42.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 12:42:19 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Subject: [PATCH RFC 2/4] migration: Introduce migrate_is_precopy() Date: Tue, 28 Apr 2020 15:42:17 -0400 Message-Id: <20200428194219.10963-3-peterx@redhat.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200428194219.10963-1-peterx@redhat.com> References: <20200428194219.10963-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=peterx@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/28 02:16:38 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Tian Kevin , "Dr . David Alan Gilbert" , peterx@redhat.com, Juan Quintela Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Export a helper globally to check whether we're during a precopy. Signed-off-by: Peter Xu --- include/migration/misc.h | 1 + migration/migration.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/include/migration/misc.h b/include/migration/misc.h index e338be8c30..b4f6bf7842 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -61,6 +61,7 @@ void migration_shutdown(void); void qemu_start_incoming_migration(const char *uri, Error **errp); bool migration_is_idle(void); bool migration_is_active(MigrationState *); +bool migration_is_precopy(void); void add_migration_state_change_notifier(Notifier *notify); void remove_migration_state_change_notifier(Notifier *notify); bool migration_in_setup(MigrationState *); diff --git a/migration/migration.c b/migration/migration.c index 187ac0410c..0082880279 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1795,6 +1795,13 @@ bool migration_is_active(MigrationState *s) s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE); } +bool migration_is_precopy(void) +{ + MigrationState *s = migrate_get_current(); + + return s && s->state == MIGRATION_STATUS_ACTIVE; +} + void migrate_init(MigrationState *s) { /*