[dpdk-dev] [PATCH v6 01/10] Channel Manager and Monitor for VM Power Management(Host).
On Tue, Nov 25, 2014 at 04:18:02PM +, Pablo de Lara wrote: > From: Alan Carew > > The manager is responsible for adding communications channels to the Monitor > thread, tracking and reporting VM state and employs the libvirt API for > synchronization with the KVM Hypervisor. The manager interacts with the > Hypervisor to discover the mapping of virtual CPUS(vCPUs) to the host > physical CPUS(pCPUs) and to inspect the VM running state. > > The manager provides the following functionality to the CLI: > 1) Connect to a libvirtd instance, default: qemu:///system > 2) Add a VM to an internal list, each VM is identified by a "name" which must >correspond a valid libvirt Domain Name. > 3) Add communication channels associated with a VM to the epoll based Monitor >thread. >The channels must exist and be in the form of: >/tmp/powermonitor/.. Each channel is a >Virtio-Serial endpoint configured as an AF_UNIX file socket and opened in >non-blocking mode. >Each VM can have a maximum of 64 channels associated with it. > 4) Disable or re-enable VM communication channels, channels once added to the >Monitor thread remain in that threads control, however acting on channel >requests can be disabled and renabled via CLI. > > The monitor is an epoll based infinite loop running in a separate thread that > waits on channel events from VMs and calls the corresponding functions. > Channel > definitions from the manager are registered via the epoll event opaque pointer > when calling epoll_ctl(EPOLL_CTL_ADD), this allows for obtaining the channels > file descriptor for reading EPOLLIN events and mapping the vCPU to pCPU(s) > associated with a request from a particular VM. > > Signed-off-by: Alan Carew > Signed-off-by: Pablo de Lara > --- > examples/vm_power_manager/channel_manager.c | 808 > +++ > examples/vm_power_manager/channel_manager.h | 314 +++ > examples/vm_power_manager/channel_monitor.c | 234 > examples/vm_power_manager/channel_monitor.h | 102 > 4 files changed, 1458 insertions(+), 0 deletions(-) > create mode 100644 examples/vm_power_manager/channel_manager.c > create mode 100644 examples/vm_power_manager/channel_manager.h > create mode 100644 examples/vm_power_manager/channel_monitor.c > create mode 100644 examples/vm_power_manager/channel_monitor.h > > diff --git a/examples/vm_power_manager/channel_manager.c > b/examples/vm_power_manager/channel_manager.c > new file mode 100644 > index 000..7d744c0 > --- /dev/null > +++ b/examples/vm_power_manager/channel_manager.c > @@ -0,0 +1,808 @@ > +/*- > + * BSD LICENSE > + * > + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. > + * All rights reserved. > + * > + * Redistribution and use in source and binary forms, with or without > + * modification, are permitted provided that the following conditions > + * are met: > + * > + * * Redistributions of source code must retain the above copyright > + * notice, this list of conditions and the following disclaimer. > + * * Redistributions in binary form must reproduce the above copyright > + * notice, this list of conditions and the following disclaimer in > + * the documentation and/or other materials provided with the > + * distribution. > + * * Neither the name of Intel Corporation nor the names of its > + * contributors may be used to endorse or promote products derived > + * from this software without specific prior written permission. > + * > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS > + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT > + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR > + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT > + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT > + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, > + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY > + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT > + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE > + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > +#include > +#include > +#include > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > + > +#include "channel_manager.h" > +#include "channel_commands.h" > +#include "channel_monitor.h" > + > + > +#define RTE_LOGTYPE_CHANNEL_MANAGER RTE_LOGTYPE_USER1 > + > +#define ITERATIVE_BITMASK_CHECK_64(mask_u64b, i) \ > + for (i = 0; mask_u64b; mask_u64b &= ~(1ULL << i++)) \ > +
[dpdk-dev] [PATCH v6 01/10] Channel Manager and Monitor for VM Power Management(Host).
From: Alan Carew The manager is responsible for adding communications channels to the Monitor thread, tracking and reporting VM state and employs the libvirt API for synchronization with the KVM Hypervisor. The manager interacts with the Hypervisor to discover the mapping of virtual CPUS(vCPUs) to the host physical CPUS(pCPUs) and to inspect the VM running state. The manager provides the following functionality to the CLI: 1) Connect to a libvirtd instance, default: qemu:///system 2) Add a VM to an internal list, each VM is identified by a "name" which must correspond a valid libvirt Domain Name. 3) Add communication channels associated with a VM to the epoll based Monitor thread. The channels must exist and be in the form of: /tmp/powermonitor/.. Each channel is a Virtio-Serial endpoint configured as an AF_UNIX file socket and opened in non-blocking mode. Each VM can have a maximum of 64 channels associated with it. 4) Disable or re-enable VM communication channels, channels once added to the Monitor thread remain in that threads control, however acting on channel requests can be disabled and renabled via CLI. The monitor is an epoll based infinite loop running in a separate thread that waits on channel events from VMs and calls the corresponding functions. Channel definitions from the manager are registered via the epoll event opaque pointer when calling epoll_ctl(EPOLL_CTL_ADD), this allows for obtaining the channels file descriptor for reading EPOLLIN events and mapping the vCPU to pCPU(s) associated with a request from a particular VM. Signed-off-by: Alan Carew Signed-off-by: Pablo de Lara --- examples/vm_power_manager/channel_manager.c | 808 +++ examples/vm_power_manager/channel_manager.h | 314 +++ examples/vm_power_manager/channel_monitor.c | 234 examples/vm_power_manager/channel_monitor.h | 102 4 files changed, 1458 insertions(+), 0 deletions(-) create mode 100644 examples/vm_power_manager/channel_manager.c create mode 100644 examples/vm_power_manager/channel_manager.h create mode 100644 examples/vm_power_manager/channel_monitor.c create mode 100644 examples/vm_power_manager/channel_monitor.h diff --git a/examples/vm_power_manager/channel_manager.c b/examples/vm_power_manager/channel_manager.c new file mode 100644 index 000..7d744c0 --- /dev/null +++ b/examples/vm_power_manager/channel_manager.c @@ -0,0 +1,808 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "channel_manager.h" +#include "channel_commands.h" +#include "channel_monitor.h" + + +#define RTE_LOGTYPE_CHANNEL_MANAGER RTE_LOGTYPE_USER1 + +#define ITERATIVE_BITMASK_CHECK_64(mask_u64b, i) \ + for (i = 0; mask_u64b; mask_u64b &= ~(1ULL << i++)) \ + if ((mask_u64b >> i) & 1) \ + +/* Global pointer to libvirt connection */ +static virConnectPtr global_vir_conn_ptr; + +static unsigned char *global_cpumaps; +static virVcpuInfo *global_vircpuinfo; +static size_t global_maplen; + +static unsigned global_n_host_cpus; + +/* + * Represents a si
