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Tsirkin" , Jason Wang , Alex Williamson , Cedric Le Goater , Gerd Hoffmann , Marc-Andre Lureau , David Hildenbrand , Steve Sistare Subject: [PATCH V4 07/14] migration: per-mode notifiers Date: Thu, 22 Feb 2024 09:28:33 -0800 Message-Id: <1708622920-68779-8-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1708622920-68779-1-git-send-email-steven.sistare@oracle.com> References: <1708622920-68779-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-22_13,2024-02-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 phishscore=0 suspectscore=0 mlxscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402220138 X-Proofpoint-GUID: Gsmrrpfx117hphCD1zdhg_TqezvPCIVI X-Proofpoint-ORIG-GUID: Gsmrrpfx117hphCD1zdhg_TqezvPCIVI Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=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 Keep a separate list of migration notifiers for each migration mode. Suggested-by: Peter Xu Signed-off-by: Steve Sistare Reviewed-by: Peter Xu Reviewed-by: David Hildenbrand --- include/migration/misc.h | 6 ++++++ migration/migration.c | 22 +++++++++++++++++----- 2 files changed, 23 insertions(+), 5 deletions(-) diff --git a/include/migration/misc.h b/include/migration/misc.h index e36a1f3..4dc06a9 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -86,6 +86,12 @@ typedef int (*MigrationNotifyFunc)(NotifierWithReturn *notify, void migration_add_notifier(NotifierWithReturn *notify, MigrationNotifyFunc func); +/* + * Same as migration_add_notifier, but applies to be specified @mode. + */ +void migration_add_notifier_mode(NotifierWithReturn *notify, + MigrationNotifyFunc func, MigMode mode); + void migration_remove_notifier(NotifierWithReturn *notify); void migration_call_notifiers(MigrationState *s, MigrationEventType type); bool migration_in_setup(MigrationState *); diff --git a/migration/migration.c b/migration/migration.c index 33149c4..925103b 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -69,8 +69,13 @@ #include "qemu/sockets.h" #include "sysemu/kvm.h" -static NotifierWithReturnList migration_state_notifiers = - NOTIFIER_WITH_RETURN_LIST_INITIALIZER(migration_state_notifiers); +#define NOTIFIER_ELEM_INIT(array, elem) \ + [elem] = NOTIFIER_WITH_RETURN_LIST_INITIALIZER((array)[elem]) + +static NotifierWithReturnList migration_state_notifiers[] = { + NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_NORMAL), + NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_CPR_REBOOT), +}; /* Messages sent on the return path from destination to source */ enum mig_rp_message_type { @@ -1463,11 +1468,17 @@ static void migrate_fd_cancel(MigrationState *s) } } +void migration_add_notifier_mode(NotifierWithReturn *notify, + MigrationNotifyFunc func, MigMode mode) +{ + notify->notify = (NotifierWithReturnFunc)func; + notifier_with_return_list_add(&migration_state_notifiers[mode], notify); +} + void migration_add_notifier(NotifierWithReturn *notify, MigrationNotifyFunc func) { - notify->notify = (NotifierWithReturnFunc)func; - notifier_with_return_list_add(&migration_state_notifiers, notify); + migration_add_notifier_mode(notify, func, MIG_MODE_NORMAL); } void migration_remove_notifier(NotifierWithReturn *notify) @@ -1480,10 +1491,11 @@ void migration_remove_notifier(NotifierWithReturn *notify) void migration_call_notifiers(MigrationState *s, MigrationEventType type) { + MigMode mode = s->parameters.mode; MigrationEvent e; e.type = type; - notifier_with_return_list_notify(&migration_state_notifiers, &e, 0); + notifier_with_return_list_notify(&migration_state_notifiers[mode], &e, 0); } bool migration_in_setup(MigrationState *s)