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[99.254.121.117]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4405e3ded65sm37581681cf.87.2024.06.12.07.42.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Jun 2024 07:42:35 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Jiri Denemark , Prasad Pandit , Fabiano Rosas , Bandan Das , peterx@redhat.com Subject: [PATCH 3/4] migration: Use MigrationStatus instead of int Date: Wed, 12 Jun 2024 10:42:27 -0400 Message-ID: <20240612144228.1179240-4-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240612144228.1179240-1-peterx@redhat.com> References: <20240612144228.1179240-1-peterx@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.143, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org QEMU uses "int" in most cases even if it stores MigrationStatus. I don't know why, so let's try to do that right and see what blows up.. Signed-off-by: Peter Xu Signed-off-by: Peter Xu --- migration/migration.h | 9 +++++---- migration/migration.c | 13 +++++++------ 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/migration/migration.h b/migration/migration.h index 6af01362d4..38aa1402d5 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -160,7 +160,7 @@ struct MigrationIncomingState { /* PostCopyFD's for external userfaultfds & handlers of shared memory */ GArray *postcopy_remote_fds; - int state; + MigrationStatus state; /* * The incoming migration coroutine, non-NULL during qemu_loadvm_state(). @@ -301,7 +301,7 @@ struct MigrationState { /* params from 'migrate-set-parameters' */ MigrationParameters parameters; - int state; + MigrationStatus state; /* State related to return path */ struct { @@ -459,7 +459,8 @@ struct MigrationState { bool rdma_migration; }; -void migrate_set_state(int *state, int old_state, int new_state); +void migrate_set_state(MigrationStatus *state, MigrationStatus old_state, + MigrationStatus new_state); void migration_fd_process_incoming(QEMUFile *f); void migration_ioc_process_incoming(QIOChannel *ioc, Error **errp); @@ -479,7 +480,7 @@ int migrate_init(MigrationState *s, Error **errp); bool migration_is_blocked(Error **errp); /* True if outgoing migration has entered postcopy phase */ bool migration_in_postcopy(void); -bool migration_postcopy_is_alive(int state); +bool migration_postcopy_is_alive(MigrationStatus state); MigrationState *migrate_get_current(void); bool migration_has_failed(MigrationState *); bool migrate_mode_is_cpr(MigrationState *); diff --git a/migration/migration.c b/migration/migration.c index d41e00ed4c..bfbd657035 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -390,7 +390,7 @@ void migration_incoming_state_destroy(void) yank_unregister_instance(MIGRATION_YANK_INSTANCE); } -static void migrate_generate_event(int new_state) +static void migrate_generate_event(MigrationStatus new_state) { if (migrate_events()) { qapi_event_send_migration(new_state); @@ -1273,8 +1273,6 @@ static void fill_destination_migration_info(MigrationInfo *info) } switch (mis->state) { - case MIGRATION_STATUS_NONE: - return; case MIGRATION_STATUS_SETUP: case MIGRATION_STATUS_CANCELLING: case MIGRATION_STATUS_CANCELLED: @@ -1290,6 +1288,8 @@ static void fill_destination_migration_info(MigrationInfo *info) info->has_status = true; fill_destination_postcopy_migration_info(info); break; + default: + return; } info->status = mis->state; @@ -1337,7 +1337,8 @@ void qmp_migrate_start_postcopy(Error **errp) /* shared migration helpers */ -void migrate_set_state(int *state, int old_state, int new_state) +void migrate_set_state(MigrationStatus *state, MigrationStatus old_state, + MigrationStatus new_state) { assert(new_state < MIGRATION_STATUS__MAX); if (qatomic_cmpxchg(state, old_state, new_state) == old_state) { @@ -1544,7 +1545,7 @@ bool migration_in_postcopy(void) } } -bool migration_postcopy_is_alive(int state) +bool migration_postcopy_is_alive(MigrationStatus state) { switch (state) { case MIGRATION_STATUS_POSTCOPY_ACTIVE: @@ -1598,7 +1599,7 @@ bool migration_is_idle(void) case MIGRATION_STATUS_DEVICE: case MIGRATION_STATUS_WAIT_UNPLUG: return false; - case MIGRATION_STATUS__MAX: + default: g_assert_not_reached(); }