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a="376610423" X-IronPort-AV: E=Sophos;i="6.04,329,1695711600"; d="scan'208";a="376610423" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.04,329,1695711600"; d="scan'208";a="28613650" From: Yuan Liu To: quintela@redhat.com, peterx@redhat.com, farosas@suse.de, leobras@redhat.com Cc: qemu-devel@nongnu.org, yuan1.liu@intel.com, nanhai.zou@intel.com Subject: [PATCH v3 2/4] multifd: Implement multifd compression accelerator Date: Wed, 3 Jan 2024 19:28:49 +0800 Message-Id: <20240103112851.908082-3-yuan1.liu@intel.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240103112851.908082-1-yuan1.liu@intel.com> References: <20240103112851.908082-1-yuan1.liu@intel.com> 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.55.52.136; envelope-from=yuan1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -59 X-Spam_score: -6.0 X-Spam_bar: ------ X-Spam_report: (-6.0 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_12_24=1.049, DKIMWL_WL_HIGH=-2.601, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1704338231971100001 Content-Type: text/plain; charset="utf-8" when starting multifd live migration, if the compression method is enabled, compression method can be accelerated using accelerators. Signed-off-by: Yuan Liu Reviewed-by: Nanhai Zou Reviewed-by: Fabiano Rosas --- migration/multifd.c | 40 ++++++++++++++++++++++++++++++++++++++-- migration/multifd.h | 8 ++++++++ 2 files changed, 46 insertions(+), 2 deletions(-) diff --git a/migration/multifd.c b/migration/multifd.c index 1fe53d3b98..8ee083b691 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -165,6 +165,36 @@ static MultiFDMethods multifd_nocomp_ops =3D { static MultiFDMethods *multifd_ops[MULTIFD_COMPRESSION__MAX] =3D { [MULTIFD_COMPRESSION_NONE] =3D &multifd_nocomp_ops, }; +static MultiFDAccelMethods *accel_multifd_ops[MULTIFD_COMPRESSION_ACCEL__M= AX]; + +static MultiFDMethods *get_multifd_ops(void) +{ + MultiFDCompression comp =3D migrate_multifd_compression(); + MultiFDCompressionAccel accel =3D migrate_multifd_compression_accel(); + + assert(comp < MULTIFD_COMPRESSION__MAX); + assert(accel < MULTIFD_COMPRESSION_ACCEL__MAX); + if (comp =3D=3D MULTIFD_COMPRESSION_NONE || + accel =3D=3D MULTIFD_COMPRESSION_ACCEL_NONE) { + return multifd_ops[comp]; + } + if (accel =3D=3D MULTIFD_COMPRESSION_ACCEL_AUTO) { + for (int i =3D 0; i < MULTIFD_COMPRESSION_ACCEL__MAX; i++) { + if (accel_multifd_ops[i] && + accel_multifd_ops[i]->is_supported(comp)) { + return accel_multifd_ops[i]->get_multifd_methods(); + } + } + return multifd_ops[comp]; + } + + /* Check if a specified accelerator is available */ + if (accel_multifd_ops[accel] && + accel_multifd_ops[accel]->is_supported(comp)) { + return accel_multifd_ops[accel]->get_multifd_methods(); + } + return multifd_ops[comp]; +} =20 void multifd_register_ops(int method, MultiFDMethods *ops) { @@ -172,6 +202,12 @@ void multifd_register_ops(int method, MultiFDMethods *= ops) multifd_ops[method] =3D ops; } =20 +void multifd_register_accel_ops(int accel, MultiFDAccelMethods *ops) +{ + assert(0 < accel && accel < MULTIFD_COMPRESSION_ACCEL__MAX); + accel_multifd_ops[accel] =3D ops; +} + static int multifd_send_initial_packet(MultiFDSendParams *p, Error **errp) { MultiFDInit_t msg =3D {}; @@ -922,7 +958,7 @@ int multifd_save_setup(Error **errp) multifd_send_state->pages =3D multifd_pages_init(page_count); qemu_sem_init(&multifd_send_state->channels_ready, 0); qatomic_set(&multifd_send_state->exiting, 0); - multifd_send_state->ops =3D multifd_ops[migrate_multifd_compression()]; + multifd_send_state->ops =3D get_multifd_ops(); =20 for (i =3D 0; i < thread_count; i++) { MultiFDSendParams *p =3D &multifd_send_state->params[i]; @@ -1180,7 +1216,7 @@ int multifd_load_setup(Error **errp) multifd_recv_state->params =3D g_new0(MultiFDRecvParams, thread_count); qatomic_set(&multifd_recv_state->count, 0); qemu_sem_init(&multifd_recv_state->sem_sync, 0); - multifd_recv_state->ops =3D multifd_ops[migrate_multifd_compression()]; + multifd_recv_state->ops =3D get_multifd_ops(); =20 for (i =3D 0; i < thread_count; i++) { MultiFDRecvParams *p =3D &multifd_recv_state->params[i]; diff --git a/migration/multifd.h b/migration/multifd.h index a835643b48..c40ff79443 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -206,7 +206,15 @@ typedef struct { int (*recv_pages)(MultiFDRecvParams *p, Error **errp); } MultiFDMethods; =20 +typedef struct { + /* Check if the compression method supports acceleration */ + bool (*is_supported) (MultiFDCompression compression); + /* Get multifd methods of the accelerator */ + MultiFDMethods* (*get_multifd_methods)(void); +} MultiFDAccelMethods; + void multifd_register_ops(int method, MultiFDMethods *ops); +void multifd_register_accel_ops(int accel, MultiFDAccelMethods *ops); =20 #endif =20 --=20 2.39.3