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bh=dBSWlCAulUQCecVVE00Mpxu9Owzv5IkdfXJrcaQ/Z20=; b=RpqsKha6z7UonPm0p/+9KzxiVCcUNSZ/GI5GENt9cJCmwXSXSXZz8tdPdgIPTMfhGbqF7K 3707XatA44Pj5kDlnxKWrymX3DU4l5Mng+p041dh54vXNt/NGf8PHs7zSNQYbNa3QBAvTA riP7OnUiVcYo2CqfQ2PKp+fThoIvplU= X-MC-Unique: OHYIjz2-NxyjWcyQz3GdSQ-1 X-Original-To: libvir-list@listman.corp.redhat.com X-MC-Unique: baByMuobO-i1XIdmyWKB5w-1 From: Jiang Jiacheng To: Subject: [PATCH 02/12] migration/migration-pin: pin migration pid by given cpumap Date: Tue, 3 Jan 2023 21:08:21 +0800 Message-ID: <20230103130831.1828670-3-jiangjiacheng@huawei.com> In-Reply-To: <20230103130831.1828670-1-jiangjiacheng@huawei.com> References: <20230103130831.1828670-1-jiangjiacheng@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpeml500022.china.huawei.com (7.185.36.66) X-CFilter-Loop: Reflected X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yubihong@huawei.com, zhengchuan@huawei.com, linyilu@huawei.com, jiangjiacheng@huawei.com, xiexiangyou@huawei.com Errors-To: libvir-list-bounces@redhat.com Sender: "libvir-list" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1672751706425100002 Content-Type: text/plain; charset="utf-8" From: zhengchuan Secondly, we start to pin migration pid by given cpumap, add virDomainPinMigrationThread() for migration pin. Signed-off-by:zhengchuan --- include/libvirt/libvirt-domain.h | 4 ++ src/conf/domain_conf.c | 9 ++++ src/conf/domain_conf.h | 11 ++++ src/conf/virconftypes.h | 2 + src/driver-hypervisor.h | 6 +++ src/libvirt-domain.c | 65 +++++++++++++++++++++++ src/libvirt_private.syms | 1 + src/libvirt_public.syms | 1 + src/qemu/qemu_driver.c | 91 ++++++++++++++++++++++++++++++++ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 13 ++++- src/remote_protocol-structs | 5 ++ src/util/vircgroup.c | 3 ++ src/util/vircgroup.h | 1 + 14 files changed, 212 insertions(+), 1 deletion(-) diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-dom= ain.h index e11f2795f1..26af8292d3 100644 --- a/include/libvirt/libvirt-domain.h +++ b/include/libvirt/libvirt-domain.h @@ -2424,6 +2424,10 @@ int virDomainPinEmulator (virD= omainPtr domain, int maplen, unsigned int flags); =20 +int virDomainPinMigrationThread (virDomainPtr domain, + unsigned char *cpumap, + int maplen); + int virDomainGetEmulatorPinInfo (virDomainPtr domain, unsigned char *cpumap= s, int maplen, diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 6c088ff295..a94a4c1c88 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -30299,3 +30299,12 @@ virDomainDefHasSpiceGraphics(const virDomainDef *d= ef) =20 return false; } + +void +virDomainMigrationIDDefFree(virDomainMigrationIDDef *def) +{ + if (!def) + return; + virBitmapFree(def->cpumask); + VIR_FREE(def); +} diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 1404c55053..a8384a4f6e 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -27,6 +27,7 @@ #include =20 #include "internal.h" +#include "viralloc.h" #include "virconftypes.h" #include "capabilities.h" #include "cpu_conf.h" @@ -4353,3 +4354,13 @@ virDomainObjGetMessages(virDomainObj *vm, =20 bool virDomainDefHasSpiceGraphics(const virDomainDef *def); + +struct _virDomainMigrationIDDef { + bool autofill; + int thread_id; + virBitmap *cpumask; + virDomainThreadSchedParam sched; +}; + +void +virDomainMigrationIDDefFree(virDomainMigrationIDDef *def); diff --git a/src/conf/virconftypes.h b/src/conf/virconftypes.h index 154805091a..984c2181d8 100644 --- a/src/conf/virconftypes.h +++ b/src/conf/virconftypes.h @@ -255,3 +255,5 @@ typedef struct _virDomainXMLOption virDomainXMLOption; typedef struct _virDomainXMLPrivateDataCallbacks virDomainXMLPrivateDataCa= llbacks; =20 typedef struct _virDomainXenbusControllerOpts virDomainXenbusControllerOpt= s; + +typedef struct _virDomainMigrationIDDef virDomainMigrationIDDef; diff --git a/src/driver-hypervisor.h b/src/driver-hypervisor.h index 618f116012..1d7f606c59 100644 --- a/src/driver-hypervisor.h +++ b/src/driver-hypervisor.h @@ -1441,6 +1441,11 @@ typedef int int seconds, unsigned int flags); =20 +typedef int +(*virDrvDomainPinMigrationThread)(virDomainPtr domain, + unsigned char *cpumap, + int maplen); + typedef char * (*virDrvDomainMigrateGetMigrationPids)(virDomainPtr domain, unsigned int flags); @@ -1716,5 +1721,6 @@ struct _virHypervisorDriver { virDrvDomainAuthorizedSSHKeysSet domainAuthorizedSSHKeysSet; virDrvDomainGetMessages domainGetMessages; virDrvDomainStartDirtyRateCalc domainStartDirtyRateCalc; + virDrvDomainPinMigrationThread domainPinMigrationThread; virDrvDomainMigrateGetMigrationPids domainMigrateGetMigrationPids; }; diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c index fabfb2dd7f..d35a8237ae 100644 --- a/src/libvirt-domain.c +++ b/src/libvirt-domain.c @@ -14011,3 +14011,68 @@ virDomainMigrateGetMigrationPids(virDomainPtr doma= in, virDispatchError(domain->conn); return NULL; } + +/** + * virDomainPinMigrationThread: + * @domain: a domain object + * @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes) (IN) + * Each bit set to 1 means that corresponding CPU is usable. + * Bytes are stored in little-endian order: CPU0-7, 8-15... + * In each byte, lowest CPU number is least significant bit. + * @maplen: number of bytes in cpumap, from 1 up to size of CPU map in + * underlying virtualization system (Xen...). + * If maplen < size, missing bytes are set to zero. + * If maplen > size, failure code is returned. + * + * Allocate the real CPUs to the migrationThread which will be launched + * at the beginning of migration. + * This allocation can be handled whether before the migration, or during + * the migration which performs as an instant change. + * + * This function may require privileged access to the hypervisor. + * + * Returns 0 in case of success, -1 in case of failure. + * + * Since: 9.1.0 + */ +int +virDomainPinMigrationThread(virDomainPtr domain, + unsigned char *cpumap, + int maplen) +{ + virConnectPtr conn; + g_autofree char *str =3D NULL; + + VIR_DOMAIN_DEBUG(domain, "migration: cpumap=3D%p, maplen=3D%d", + cpumap, maplen); + + virResetLastError(); + + virCheckDomainReturn(domain, -1); + conn =3D domain->conn; + + virCheckNonNullArgGoto(cpumap, error); + virCheckPositiveArgGoto(maplen, error); + + str =3D virBitmapDataFormat(cpumap, maplen); + VIR_INFO("Begin to PinMigrationThread(domain=3D%s): new CPU Affinity:%= s", + NULLSTR(domain->name), NULLSTR(str)); + + if (conn->driver->domainPinMigrationThread) { + int ret; + ret =3D conn->driver->domainPinMigrationThread(domain, cpumap, map= len); + if (ret < 0) { + VIR_ERROR(_("Failed to PinMigrationThread(domain=3D%s), ret=3D= %d"), + NULLSTR(domain->name), ret); + goto error; + } + VIR_INFO("Success to PinMigrationThread(domain=3D%s)", NULLSTR(dom= ain->name)); + return ret; + } + + virReportUnsupportedError(); + + error: + virDispatchError(domain->conn); + return -1; +} diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index ae746a2d51..ad19d37d95 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -516,6 +516,7 @@ virDomainMemoryModelTypeToString; virDomainMemoryRemove; virDomainMemorySourceTypeFromString; virDomainMemorySourceTypeToString; +virDomainMigrationIDDefFree; virDomainMouseModeTypeFromString; virDomainMouseModeTypeToString; virDomainNetAllocateActualDevice; diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms index f11fe1b26b..61561f2367 100644 --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -929,6 +929,7 @@ LIBVIRT_8.5.0 { =20 LIBVIRT_9.1.0 { global: + virDomainPinMigrationThread; virDomainMigrateGetMigrationPids; } LIBVIRT_8.5.0; =20 diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index b9dc5f29f5..7ae81f459f 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -20678,6 +20678,96 @@ qemuDomainMigrateGetMigrationPids(virDomainPtr dom, return ret; } =20 +static int +qemuDomainPinMigrationThread(virDomainPtr dom, + unsigned char *cpumap, + int maplen) +{ + int ret =3D -1; + virQEMUDriver *driver =3D dom->conn->privateData; + virQEMUDriverConfig *cfg =3D NULL; + virCaps *caps =3D NULL; + virDomainObj *vm =3D NULL; + virBitmap *pcpumap =3D NULL; + virCgroup *cgroup_migthread =3D NULL; + qemuDomainObjPrivate *priv =3D NULL; + int migration_id =3D 0; + virDomainMigrationIDDef *migration =3D NULL; + + cfg =3D virQEMUDriverGetConfig(driver); + + if (!(caps =3D virQEMUDriverGetCapabilities(driver, false))) + goto cleanup; + + if (!(vm =3D qemuDomainObjFromDomain(dom))) + goto cleanup; + + priv =3D vm->privateData; + + if (virDomainPinMigrationThreadEnsureACL(dom->conn, vm->def) < 0) + goto cleanup; + + if (virDomainObjBeginJob(vm, VIR_JOB_QUERY) < 0) + goto cleanup; + + if (!(pcpumap =3D virBitmapNewData(cpumap, maplen))) + goto release; + + if (virBitmapIsAllClear(pcpumap)) { + virReportError(VIR_ERR_INVALID_ARG, "%s", + _("Empty migration thread cpumap list for pinning")= ); + goto release; + } + + virBitmapFree(priv->pcpumap); + priv->pcpumap =3D pcpumap; + + migration =3D g_new0(virDomainMigrationIDDef, 1); + + if (priv->migrationPids !=3D NULL) { + if (virStrToLong_i(priv->migrationPids, NULL, 10, &(migration->thr= ead_id)) !=3D 0) { + VIR_ERROR(_("migrationPid trans failure, migrationPids =3D %s"= ), priv->migrationPids); + goto endjob; + } + + if (pcpumap) { + if (virCgroupHasController(priv->cgroup, + VIR_CGROUP_CONTROLLER_CPUSET)) { + if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_MIG= RATION_THREAD, + migration_id, false, &cgroup_migthr= ead) < 0) + goto endjob; + if (virDomainCgroupSetupCpusetCpus(cgroup_migthread, pcpum= ap) < 0) { + virReportError(VIR_ERR_OPERATION_INVALID, + _("failed to set cpuset.cpus in cgroup" + " for migration thread %d"), migration_= id); + goto endjob; + } + } + + if (virProcessSetAffinity(migration->thread_id, pcpumap, false= ) < 0) + goto endjob; + } + } + + ret =3D 0; + goto endjob; + + release: + virBitmapFree(pcpumap); + + endjob: + virDomainObjEndJob(vm); + + cleanup: + if (cgroup_migthread) + virCgroupFree(cgroup_migthread); + virDomainMigrationIDDefFree(migration); + virDomainObjEndAPI(&vm); + virObjectUnref(caps); + virObjectUnref(cfg); + return ret; +} + =20 static virHypervisorDriver qemuHypervisorDriver =3D { .name =3D QEMU_DRIVER_NAME, @@ -20927,6 +21017,7 @@ static virHypervisorDriver qemuHypervisorDriver =3D= { .domainGetMessages =3D qemuDomainGetMessages, /* 7.1.0 */ .domainStartDirtyRateCalc =3D qemuDomainStartDirtyRateCalc, /* 7.2.0 */ .domainSetLaunchSecurityState =3D qemuDomainSetLaunchSecurityState, /*= 8.0.0 */ + .domainPinMigrationThread =3D qemuDomainPinMigrationThread, /* 9.1.0 */ .domainMigrateGetMigrationPids =3D qemuDomainMigrateGetMigrationPids, = /* 9.1.0 */ }; =20 diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 9d8d7142b7..1c7cac6b29 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -8651,6 +8651,7 @@ static virHypervisorDriver hypervisor_driver =3D { .domainGetMessages =3D remoteDomainGetMessages, /* 7.1.0 */ .domainStartDirtyRateCalc =3D remoteDomainStartDirtyRateCalc, /* 7.2.0= */ .domainSetLaunchSecurityState =3D remoteDomainSetLaunchSecurityState, = /* 8.0.0 */ + .domainPinMigrationThread =3D remoteDomainPinMigrationThread, /* 9.1.0= */ .domainMigrateGetMigrationPids =3D remoteDomainMigrateGetMigrationPids= , /* 9.1.0 */ }; =20 diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index d1b799db13..f86172b636 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -1291,6 +1291,11 @@ struct remote_domain_pin_iothread_args { unsigned int flags; }; =20 +struct remote_domain_pin_migration_thread_args { + remote_nonnull_domain dom; + opaque cpumap; /* (unsigned char *) */ +}; + struct remote_domain_add_iothread_args { remote_nonnull_domain dom; unsigned int iothread_id; @@ -6976,5 +6981,11 @@ enum remote_procedure { * @generate: both * @acl: domain:migrate */ - REMOTE_PROC_DOMAIN_MIGRATE_GET_MIGRATION_PIDS =3D 443 + REMOTE_PROC_DOMAIN_MIGRATE_GET_MIGRATION_PIDS =3D 443, + + /** + * @generate: both + * @acl: domain:write + */ + REMOTE_PROC_DOMAIN_PIN_MIGRATION_THREAD =3D 444 }; diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs index da4d799f42..9ef27913f1 100644 --- a/src/remote_protocol-structs +++ b/src/remote_protocol-structs @@ -3268,6 +3268,10 @@ struct remote_domain_event_memory_device_size_change= _msg { remote_nonnull_string alias; uint64_t size; }; +struct remote_domain_pin_migration_thread_args { + remote_nonnull_domain dom; + opaque cpumap; /* (unsigned= char *) */ +}; struct remote_domain_migrate_get_migration_pids_args { remote_nonnull_domain dom; u_int flags; @@ -3719,4 +3723,5 @@ enum remote_procedure { REMOTE_PROC_DOMAIN_RESTORE_PARAMS =3D 441, REMOTE_PROC_DOMAIN_ABORT_JOB_FLAGS =3D 442, REMOTE_PROC_DOMAIN_MIGRATE_GET_MIGRATION_PIDS =3D 443, + REMOTE_PROC_DOMAIN_PIN_MIGRATION_THREAD =3D 444, }; diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c index 73675b4478..d4307c0d72 100644 --- a/src/util/vircgroup.c +++ b/src/util/vircgroup.c @@ -1123,6 +1123,9 @@ virCgroupNewThread(virCgroup *domain, case VIR_CGROUP_THREAD_IOTHREAD: name =3D g_strdup_printf("iothread%d", id); break; + case VIR_CGROUP_THREAD_MIGRATION_THREAD: + name =3D g_strdup_printf("migthread%d", id); + break; case VIR_CGROUP_THREAD_LAST: virReportError(VIR_ERR_INTERNAL_ERROR, _("unexpected name value %d"), nameval); diff --git a/src/util/vircgroup.h b/src/util/vircgroup.h index 690f09465c..3c5c23965f 100644 --- a/src/util/vircgroup.h +++ b/src/util/vircgroup.h @@ -53,6 +53,7 @@ typedef enum { VIR_CGROUP_THREAD_VCPU =3D 0, VIR_CGROUP_THREAD_EMULATOR, VIR_CGROUP_THREAD_IOTHREAD, + VIR_CGROUP_THREAD_MIGRATION_THREAD, =20 VIR_CGROUP_THREAD_LAST } virCgroupThreadName; --=20 2.33.0