From nobody Mon Nov 25 02:59:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718727228294702.366202917927; Tue, 18 Jun 2024 09:13:48 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sJbSQ-0002q0-2K; Tue, 18 Jun 2024 12:13:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sJbSO-0002ml-N3 for qemu-devel@nongnu.org; Tue, 18 Jun 2024 12:13:16 -0400 Received: from vps-vb.mhejs.net ([37.28.154.113]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sJbSN-0000ou-6L for qemu-devel@nongnu.org; Tue, 18 Jun 2024 12:13:16 -0400 Received: from MUA by vps-vb.mhejs.net with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sJbS1-0001aT-BC; Tue, 18 Jun 2024 18:12:53 +0200 From: "Maciej S. Szmigiero" To: Peter Xu , Fabiano Rosas Cc: Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Eric Blake , Markus Armbruster , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Avihai Horon , Joao Martins , qemu-devel@nongnu.org Subject: [PATCH v1 01/13] vfio/migration: Add save_{iterate, complete_precopy}_started trace events Date: Tue, 18 Jun 2024 18:12:19 +0200 Message-ID: <8a5b0ed0530bfbecdc1a1a908da7dd7b2eb2687a.1718717584.git.maciej.szmigiero@oracle.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=37.28.154.113; envelope-from=mail@maciej.szmigiero.name; helo=vps-vb.mhejs.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1718727229780100003 Content-Type: text/plain; charset="utf-8" From: "Maciej S. Szmigiero" This way both the start and end points of migrating a particular VFIO device are known. Add also a vfio_save_iterate_empty_hit trace event so it is known when there's no more data to send for that device. Signed-off-by: Maciej S. Szmigiero --- hw/vfio/migration.c | 13 +++++++++++++ hw/vfio/trace-events | 3 +++ include/hw/vfio/vfio-common.h | 3 +++ 3 files changed, 19 insertions(+) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 34d4be2ce1b1..93f767e3c2dd 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -472,6 +472,9 @@ static int vfio_save_setup(QEMUFile *f, void *opaque, E= rror **errp) return -ENOMEM; } =20 + migration->save_iterate_run =3D false; + migration->save_iterate_empty_hit =3D false; + if (vfio_precopy_supported(vbasedev)) { switch (migration->device_state) { case VFIO_DEVICE_STATE_RUNNING: @@ -605,9 +608,17 @@ static int vfio_save_iterate(QEMUFile *f, void *opaque) VFIOMigration *migration =3D vbasedev->migration; ssize_t data_size; =20 + if (!migration->save_iterate_run) { + trace_vfio_save_iterate_started(vbasedev->name); + migration->save_iterate_run =3D true; + } + data_size =3D vfio_save_block(f, migration); if (data_size < 0) { return data_size; + } else if (data_size =3D=3D 0 && !migration->save_iterate_empty_hit) { + trace_vfio_save_iterate_empty_hit(vbasedev->name); + migration->save_iterate_empty_hit =3D true; } =20 vfio_update_estimated_pending_data(migration, data_size); @@ -633,6 +644,8 @@ static int vfio_save_complete_precopy(QEMUFile *f, void= *opaque) int ret; Error *local_err =3D NULL; =20 + trace_vfio_save_complete_precopy_started(vbasedev->name); + /* We reach here with device state STOP or STOP_COPY only */ ret =3D vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_STOP_COPY, VFIO_DEVICE_STATE_STOP, &local_err); diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index 64161bf6f44c..814000796687 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -158,8 +158,11 @@ vfio_migration_state_notifier(const char *name, int st= ate) " (%s) state %d" vfio_save_block(const char *name, int data_size) " (%s) data_size %d" vfio_save_cleanup(const char *name) " (%s)" vfio_save_complete_precopy(const char *name, int ret) " (%s) ret %d" +vfio_save_complete_precopy_started(const char *name) " (%s)" vfio_save_device_config_state(const char *name) " (%s)" vfio_save_iterate(const char *name, uint64_t precopy_init_size, uint64_t p= recopy_dirty_size) " (%s) precopy initial size 0x%"PRIx64" precopy dirty si= ze 0x%"PRIx64 +vfio_save_iterate_started(const char *name) " (%s)" +vfio_save_iterate_empty_hit(const char *name) " (%s)" vfio_save_setup(const char *name, uint64_t data_buffer_size) " (%s) data b= uffer size 0x%"PRIx64 vfio_state_pending_estimate(const char *name, uint64_t precopy, uint64_t p= ostcopy, uint64_t precopy_init_size, uint64_t precopy_dirty_size) " (%s) pr= ecopy 0x%"PRIx64" postcopy 0x%"PRIx64" precopy initial size 0x%"PRIx64" pre= copy dirty size 0x%"PRIx64 vfio_state_pending_exact(const char *name, uint64_t precopy, uint64_t post= copy, uint64_t stopcopy_size, uint64_t precopy_init_size, uint64_t precopy_= dirty_size) " (%s) precopy 0x%"PRIx64" postcopy 0x%"PRIx64" stopcopy size 0= x%"PRIx64" precopy initial size 0x%"PRIx64" precopy dirty size 0x%"PRIx64 diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 4cb1ab8645dc..510818f4dae3 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -71,6 +71,9 @@ typedef struct VFIOMigration { uint64_t precopy_init_size; uint64_t precopy_dirty_size; bool initial_data_sent; + + bool save_iterate_run; + bool save_iterate_empty_hit; } VFIOMigration; =20 struct VFIOGroup;