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by hqpgpgate101.nvidia.com on Sat, 20 Jun 2020 13:56:58 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Sat, 20 Jun 2020 20:56:52 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Sat, 20 Jun 2020 20:56:45 +0000 From: Kirti Wankhede To: , Subject: [PATCH QEMU v25 17/17] qapi: Add VFIO devices migration stats in Migration stats Date: Sun, 21 Jun 2020 01:51:26 +0530 Message-ID: <1592684486-18511-18-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1592684486-18511-1-git-send-email-kwankhede@nvidia.com> References: <1592684486-18511-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1592686605; bh=ZgbpubgazlEdcwYSFUCPqwnBN7S6ohc3gEMlRJXIsxc=; 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@@ -293,6 +294,25 @@ const MemoryRegionOps vfio_region_ops = { * Device state interfaces */ +bool vfio_mig_active(void) +{ + VFIOGroup *group; + VFIODevice *vbasedev; + + if (QLIST_EMPTY(&vfio_group_list)) { + return false; + } + + QLIST_FOREACH(group, &vfio_group_list, next) { + QLIST_FOREACH(vbasedev, &group->device_list, next) { + if (vbasedev->migration_blocker) { + return false; + } + } + } + return true; +} + static bool vfio_devices_are_stopped_and_saving(void) { VFIOGroup *group; diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index e0fbb3a01855..09eec9cafdd5 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -27,7 +27,7 @@ #include "exec/ram_addr.h" #include "pci.h" #include "trace.h" - +#include "qemu/vfio-helpers.h" /* * Flags used as delimiter: * 0xffffffff => MSB 32-bit all 1s @@ -39,6 +39,8 @@ #define VFIO_MIG_FLAG_DEV_SETUP_STATE (0xffffffffef100003ULL) #define VFIO_MIG_FLAG_DEV_DATA_STATE (0xffffffffef100004ULL) +static int64_t bytes_transferred; + static void vfio_migration_region_exit(VFIODevice *vbasedev) { VFIOMigration *migration = vbasedev->migration; @@ -261,6 +263,7 @@ static int vfio_save_buffer(QEMUFile *f, VFIODevice *vbasedev) return ret; } + bytes_transferred += data_size; return data_size; } @@ -742,6 +745,7 @@ static void vfio_migration_state_notifier(Notifier *notifier, void *data) } vfio_start_dirty_page_tracking(vbasedev, false); + bytes_transferred = 0; } } @@ -789,6 +793,11 @@ static int vfio_migration_init(VFIODevice *vbasedev, /* ---------------------------------------------------------------------- */ +int64_t vfio_mig_bytes_transferred(void) +{ + return bytes_transferred; +} + int vfio_migration_probe(VFIODevice *vbasedev, Error **errp) { struct vfio_region_info *info; diff --git a/include/qemu/vfio-helpers.h b/include/qemu/vfio-helpers.h index 1f057c2b9e40..26a7df0767b1 100644 --- a/include/qemu/vfio-helpers.h +++ b/include/qemu/vfio-helpers.h @@ -29,4 +29,7 @@ void qemu_vfio_pci_unmap_bar(QEMUVFIOState *s, int index, void *bar, int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e, int irq_type, Error **errp); +bool vfio_mig_active(void); +int64_t vfio_mig_bytes_transferred(void); + #endif diff --git a/migration/migration.c b/migration/migration.c index 481a590f7222..8b010a002c3d 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -54,6 +54,7 @@ #include "net/announce.h" #include "qemu/queue.h" #include "multifd.h" +#include "qemu/vfio-helpers.h" #define MAX_THROTTLE (32 << 20) /* Migration transfer speed throttling */ @@ -970,6 +971,17 @@ static void populate_disk_info(MigrationInfo *info) } } +static void populate_vfio_info(MigrationInfo *info) +{ +#ifdef CONFIG_LINUX + if (vfio_mig_active()) { + info->has_vfio = true; + info->vfio = g_malloc0(sizeof(*info->vfio)); + info->vfio->transferred = vfio_mig_bytes_transferred(); + } +#endif +} + static void fill_source_migration_info(MigrationInfo *info) { MigrationState *s = migrate_get_current(); @@ -995,6 +1007,7 @@ static void fill_source_migration_info(MigrationInfo *info) populate_time_info(info, s); populate_ram_info(info, s); populate_disk_info(info); + populate_vfio_info(info); break; case MIGRATION_STATUS_COLO: info->has_status = true; @@ -1003,6 +1016,7 @@ static void fill_source_migration_info(MigrationInfo *info) case MIGRATION_STATUS_COMPLETED: populate_time_info(info, s); populate_ram_info(info, s); + populate_vfio_info(info); break; case MIGRATION_STATUS_FAILED: info->has_status = true; diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 2b0b58a336e6..29bb4d2d949c 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -355,6 +355,12 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict) } monitor_printf(mon, "]\n"); } + + if (info->has_vfio) { + monitor_printf(mon, "vfio device transferred: %" PRIu64 " kbytes\n", + info->vfio->transferred >> 10); + } + qapi_free_MigrationInfo(info); } diff --git a/qapi/migration.json b/qapi/migration.json index d5000558c6c9..952864b05455 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -146,6 +146,18 @@ 'active', 'postcopy-active', 'postcopy-paused', 'postcopy-recover', 'completed', 'failed', 'colo', 'pre-switchover', 'device', 'wait-unplug' ] } +## +# @VfioStats: +# +# Detailed VFIO devices migration statistics +# +# @transferred: amount of bytes transferred to the target VM by VFIO devices +# +# Since: 5.1 +# +## +{ 'struct': 'VfioStats', + 'data': {'transferred': 'int' } } ## # @MigrationInfo: @@ -207,11 +219,16 @@ # # @socket-address: Only used for tcp, to know what the real port is (Since 4.0) # +# @vfio: @VfioStats containing detailed VFIO devices migration statistics, +# only returned if VFIO device is present, migration is supported by all +# VFIO devices and status is 'active' or 'completed' (since 5.1) +# # Since: 0.14.0 ## { 'struct': 'MigrationInfo', 'data': {'*status': 'MigrationStatus', '*ram': 'MigrationStats', '*disk': 'MigrationStats', + '*vfio': 'VfioStats', '*xbzrle-cache': 'XBZRLECacheStats', '*total-time': 'int', '*expected-downtime': 'int',