[libvirt] [PATCH v4 00/13] Implement memory control api

[Nikunj A. Dadhania]

Changelog from v3:
  * Add unsigned int flags to the public api and make corresponding changes
    further down till the drivers(qemu, lxc and remote)
  * Move exporting of the api's to patch two
  * Added memtune test in tests/qemuxml2xmltest.c
  * Fix: src/conf/domain_conf.c - print memtune element only if tunable
    is present
  * Fix: src/qemu/qemu_driver.c - call cgroup apis only if nonzero
  * Fix: src/lxc/lxc_controller.c - call cgroup apis only if nonzero

Changelog from v2:
  * Implement virDomainGetMemoryParameters api
  * Add virDomainGetMemoryParameters to memtune command in virsh
  * Provide domainGetMemoryParameters implementation for remote, QEmu and LXC
    drivers
  * Auto-generate code using rpcgen and remote_generate_stubs.pl
  * Squash all the changes related to remote driver and remote protocol into
    one single patch. 
  * Patch re-ordering

Changelog from v1:
  * Patch re-ordering for compilation
  * Folded python bindings changes to patch 01
  * Added defines for string constants for memory tunables
  * Typo fix: min_guarantee
  * Moved initialization of function pointers in driver.h patch

This patch series implement public api for controlling various memory tunables
exported by the OS. This is based on the following RFC[1].

  * Implement virDomainSetMemoryParameters api
  * Provide implementation for remote, QEmu and LXC drivers
  * Enable memory controller support fro QEmu
  * virsh command for runtime changes to the memory parameters
  * Domain configuration parsing for memory control parameters
  * Cgroup memory controller code for memory hard_limit/soft_limit, swap
    hard_limit 

To Do
* Python bindings is just a place holder, need to implement

1. https://www.redhat.com/archives/libvir-list/2010-August/msg00607.html
2. https://www.redhat.com/archives/libvir-list/2010-August/msg00699.html

---

Nikunj A. Dadhania (13):
      Adding structure and defines for virDomainSet/GetMemoryParameters
      Adding virDomainSetMemoryParameters and virDomainGetMemoryParameters API
      Adds xml entries for memory tunables
      XML parsing for memory tunables
      Implement cgroup memory controller tunables
      Implement driver interface domainSetMemoryParamters for QEmu
      Implement driver interface domainGetMemoryParamters for QEmu
      Adding memtunables to qemuSetupCgroup
      Adding memtunables to libvirt-lxc command
      Implement driver interface domainSetMemoryParamters for LXC
      Implement driver interface domainGetMemoryParamters for LXC
      Adding memtune command to virsh tool
      Remote protocol changes and implements virDomainSet/GetMemoryParameters


 daemon/remote.c                                  |  162 +++++++++++++
 daemon/remote_dispatch_args.h                    |    2 
 daemon/remote_dispatch_prototypes.h              |   16 +
 daemon/remote_dispatch_ret.h                     |    1 
 daemon/remote_dispatch_table.h                   |   10 +
 docs/schemas/domain.rng                          |   31 +++
 include/libvirt/libvirt.h.in                     |   63 +++++
 python/generator.py                              |    2 
 python/libvirt-override-api.xml                  |   12 +
 python/libvirt-override.c                        |   14 +
 src/conf/domain_conf.c                           |   54 ++++
 src/conf/domain_conf.h                           |   12 +
 src/driver.h                                     |   14 +
 src/esx/esx_driver.c                             |    2 
 src/esx/esx_vmx.c                                |   30 +-
 src/libvirt.c                                    |  104 +++++++++
 src/libvirt_private.syms                         |    6 
 src/libvirt_public.syms                          |    6 
 src/lxc/lxc_controller.c                         |   32 +++
 src/lxc/lxc_driver.c                             |  215 +++++++++++++++++-
 src/openvz/openvz_driver.c                       |   10 -
 src/phyp/phyp_driver.c                           |    2 
 src/qemu/qemu.conf                               |    4 
 src/qemu/qemu_conf.c                             |   11 -
 src/qemu/qemu_driver.c                           |  265 +++++++++++++++++++++-
 src/remote/remote_driver.c                       |  151 +++++++++++++
 src/remote/remote_protocol.c                     |   88 +++++++
 src/remote/remote_protocol.h                     |   58 +++++
 src/remote/remote_protocol.x                     |   44 ++++
 src/test/test_driver.c                           |   14 +
 src/uml/uml_conf.c                               |    2 
 src/uml/uml_driver.c                             |   16 +
 src/util/cgroup.c                                |  106 +++++++++
 src/util/cgroup.h                                |    7 +
 src/xen/xen_driver.c                             |    2 
 tests/qemuxml2argvdata/qemuxml2argv-memtune.args |    1 
 tests/qemuxml2argvdata/qemuxml2argv-memtune.xml  |   30 ++
 tests/qemuxml2xmltest.c                          |    1 
 tools/virsh.c                                    |  130 +++++++++++
 39 files changed, 1662 insertions(+), 68 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memtune.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memtune.xml