diff options
| -rw-r--r-- | hw/s390x/s390-stattrib.c | 7 | ||||
| -rw-r--r-- | hw/vfio/migration.c | 10 | ||||
| -rw-r--r-- | include/migration/register.h | 27 | ||||
| -rw-r--r-- | migration/block-dirty-bitmap.c | 6 | ||||
| -rw-r--r-- | migration/block.c | 7 | ||||
| -rw-r--r-- | migration/migration.c | 18 | ||||
| -rw-r--r-- | migration/ram.c | 18 | ||||
| -rw-r--r-- | migration/savevm.c | 24 | ||||
| -rw-r--r-- | migration/savevm.h | 8 |
9 files changed, 59 insertions, 66 deletions
diff --git a/hw/s390x/s390-stattrib.c b/hw/s390x/s390-stattrib.c index c7ae918..aed919a 100644 --- a/hw/s390x/s390-stattrib.c +++ b/hw/s390x/s390-stattrib.c @@ -182,16 +182,15 @@ static int cmma_save_setup(QEMUFile *f, void *opaque) return 0; } -static void cmma_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +static void cmma_state_pending(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { S390StAttribState *sas = S390_STATTRIB(opaque); S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas); long long res = sac->get_dirtycount(sas); if (res >= 0) { - *res_precopy_only += res; + *must_precopy += res; } } diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index fb0dd95..83d2d44 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -456,9 +456,8 @@ static void vfio_save_cleanup(void *opaque) trace_vfio_save_cleanup(vbasedev->name); } -static void vfio_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +static void vfio_state_pending(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { VFIODevice *vbasedev = opaque; VFIOMigration *migration = vbasedev->migration; @@ -469,10 +468,9 @@ static void vfio_state_pending(void *opaque, return; } - *res_precopy_only += migration->pending_bytes; + *must_precopy += migration->pending_bytes; - trace_vfio_state_pending(vbasedev->name, *res_precopy_only, - *res_postcopy_only); + trace_vfio_state_pending(vbasedev->name, *must_precopy, *can_postcopy); } static int vfio_save_iterate(QEMUFile *f, void *opaque) diff --git a/include/migration/register.h b/include/migration/register.h index a958a92..a8dfd8f 100644 --- a/include/migration/register.h +++ b/include/migration/register.h @@ -47,22 +47,25 @@ typedef struct SaveVMHandlers { /* This runs outside the iothread lock! */ int (*save_setup)(QEMUFile *f, void *opaque); /* Note for save_live_pending: - * - res_precopy_only is for data which must be migrated in precopy phase - * or in stopped state, in other words - before target vm start - * - res_postcopy_only is for data which must be migrated in postcopy phase - * or in stopped state, in other words - after source vm stop + * must_precopy: + * - must be migrated in precopy or in stopped state + * - i.e. must be migrated before target start * - * Sum of res_postcopy_only and res_postcopy_only is the whole - * amount of pending data. + * can_postcopy: + * - can migrate in postcopy or in stopped state + * - i.e. can migrate after target start + * - some can also be migrated during precopy (RAM) + * - some must be migrated after source stops (block-dirty-bitmap) + * + * Sum of can_postcopy and must_postcopy is the whole amount of + * pending data. */ /* This estimates the remaining data to transfer */ - void (*state_pending_estimate)(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); + void (*state_pending_estimate)(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy); /* This calculate the exact remaining data to transfer */ - void (*state_pending_exact)(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); + void (*state_pending_exact)(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy); LoadStateHandler *load_state; int (*load_setup)(QEMUFile *f, void *opaque); int (*load_cleanup)(void *opaque); diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c index 9c6655e..fe73aa9 100644 --- a/migration/block-dirty-bitmap.c +++ b/migration/block-dirty-bitmap.c @@ -763,8 +763,8 @@ static int dirty_bitmap_save_complete(QEMUFile *f, void *opaque) } static void dirty_bitmap_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) + uint64_t *must_precopy, + uint64_t *can_postcopy) { DBMSaveState *s = &((DBMState *)opaque)->save; SaveBitmapState *dbms; @@ -784,7 +784,7 @@ static void dirty_bitmap_state_pending(void *opaque, trace_dirty_bitmap_state_pending(pending); - *res_postcopy_only += pending; + *can_postcopy += pending; } /* First occurrence of this bitmap. It should be created if doesn't exist */ diff --git a/migration/block.c b/migration/block.c index 168ef89..426a25b 100644 --- a/migration/block.c +++ b/migration/block.c @@ -853,9 +853,8 @@ static int block_save_complete(QEMUFile *f, void *opaque) return 0; } -static void block_state_pending(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +static void block_state_pending(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { /* Estimate pending number of bytes to send */ uint64_t pending; @@ -876,7 +875,7 @@ static void block_state_pending(void *opaque, trace_migration_block_state_pending(pending); /* We don't do postcopy */ - *res_precopy_only += pending; + *must_precopy += pending; } static int block_load(QEMUFile *f, void *opaque, int version_id) diff --git a/migration/migration.c b/migration/migration.c index 296f7fe..ae2025d 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3863,18 +3863,18 @@ typedef enum { */ static MigIterateState migration_iteration_run(MigrationState *s) { - uint64_t pend_pre, pend_post; + uint64_t must_precopy, can_postcopy; bool in_postcopy = s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE; - qemu_savevm_state_pending_estimate(&pend_pre, &pend_post); - uint64_t pending_size = pend_pre + pend_post; + qemu_savevm_state_pending_estimate(&must_precopy, &can_postcopy); + uint64_t pending_size = must_precopy + can_postcopy; - trace_migrate_pending_estimate(pending_size, pend_pre, pend_post); + trace_migrate_pending_estimate(pending_size, must_precopy, can_postcopy); - if (pend_pre <= s->threshold_size) { - qemu_savevm_state_pending_exact(&pend_pre, &pend_post); - pending_size = pend_pre + pend_post; - trace_migrate_pending_exact(pending_size, pend_pre, pend_post); + if (must_precopy <= s->threshold_size) { + qemu_savevm_state_pending_exact(&must_precopy, &can_postcopy); + pending_size = must_precopy + can_postcopy; + trace_migrate_pending_exact(pending_size, must_precopy, can_postcopy); } if (!pending_size || pending_size < s->threshold_size) { @@ -3884,7 +3884,7 @@ static MigIterateState migration_iteration_run(MigrationState *s) } /* Still a significant amount to transfer */ - if (!in_postcopy && pend_pre <= s->threshold_size && + if (!in_postcopy && must_precopy <= s->threshold_size && qatomic_read(&s->start_postcopy)) { if (postcopy_start(s)) { error_report("%s: postcopy failed to start", __func__); diff --git a/migration/ram.c b/migration/ram.c index 178f92a..96e8a19 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3489,9 +3489,8 @@ static int ram_save_complete(QEMUFile *f, void *opaque) return 0; } -static void ram_state_pending_estimate(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +static void ram_state_pending_estimate(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { RAMState **temp = opaque; RAMState *rs = *temp; @@ -3500,15 +3499,14 @@ static void ram_state_pending_estimate(void *opaque, if (migrate_postcopy_ram()) { /* We can do postcopy, and all the data is postcopiable */ - *res_postcopy_only += remaining_size; + *can_postcopy += remaining_size; } else { - *res_precopy_only += remaining_size; + *must_precopy += remaining_size; } } -static void ram_state_pending_exact(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +static void ram_state_pending_exact(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy) { RAMState **temp = opaque; RAMState *rs = *temp; @@ -3526,9 +3524,9 @@ static void ram_state_pending_exact(void *opaque, if (migrate_postcopy_ram()) { /* We can do postcopy, and all the data is postcopiable */ - *res_postcopy_only += remaining_size; + *can_postcopy += remaining_size; } else { - *res_precopy_only += remaining_size; + *must_precopy += remaining_size; } } diff --git a/migration/savevm.c b/migration/savevm.c index 80b7f12..aa54a67 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1541,13 +1541,13 @@ flush: * the result is split into the amount for units that can and * for units that can't do postcopy. */ -void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +void qemu_savevm_state_pending_estimate(uint64_t *must_precopy, + uint64_t *can_postcopy) { SaveStateEntry *se; - *res_precopy_only = 0; - *res_postcopy_only = 0; + *must_precopy = 0; + *can_postcopy = 0; QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { if (!se->ops || !se->ops->state_pending_estimate) { @@ -1558,19 +1558,17 @@ void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, continue; } } - se->ops->state_pending_estimate(se->opaque, - res_precopy_only, - res_postcopy_only); + se->ops->state_pending_estimate(se->opaque, must_precopy, can_postcopy); } } -void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, - uint64_t *res_postcopy_only) +void qemu_savevm_state_pending_exact(uint64_t *must_precopy, + uint64_t *can_postcopy) { SaveStateEntry *se; - *res_precopy_only = 0; - *res_postcopy_only = 0; + *must_precopy = 0; + *can_postcopy = 0; QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { if (!se->ops || !se->ops->state_pending_exact) { @@ -1581,9 +1579,7 @@ void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, continue; } } - se->ops->state_pending_exact(se->opaque, - res_precopy_only, - res_postcopy_only); + se->ops->state_pending_exact(se->opaque, must_precopy, can_postcopy); } } diff --git a/migration/savevm.h b/migration/savevm.h index bd625a6..fb63673 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -40,10 +40,10 @@ void qemu_savevm_state_cleanup(void); void qemu_savevm_state_complete_postcopy(QEMUFile *f); int qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only, bool inactivate_disks); -void qemu_savevm_state_pending_exact(uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); -void qemu_savevm_state_pending_estimate(uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); +void qemu_savevm_state_pending_exact(uint64_t *must_precopy, + uint64_t *can_postcopy); +void qemu_savevm_state_pending_estimate(uint64_t *must_precopy, + uint64_t *can_postcopy); void qemu_savevm_send_ping(QEMUFile *f, uint32_t value); void qemu_savevm_send_open_return_path(QEMUFile *f); int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len); |