[libvirt] [PATCHv2 00/11] util/resctrl cleanups and refactors

[Wang, Huaqiang]

Hi Michal,

I think I make a mistake by not adding you into the mail receiver list since you are the reviewer of V1,
and these patches have been submitted  for more than two weeks.
The v2 patches locates in this link: https://www.redhat.com/archives/libvir-list/2019-June/thread.html#00288

I wonder if you have time to have a review. Actually I aimed to submit the MBM patches,
Which is ready based on these patches, and this series of patches for cleanups and fixes
to existing codes to make the upcoming MBM patches to be more reasonable. If you think
it is necessary to review the MBM patches as a whole , I can send them out shortly.

Br
Huaqiang

> -----Original Message-----
> From: Wang, Huaqiang
> Sent: Tuesday, June 11, 2019 11:31 AM
> To: libvir-list at redhat.com
> Cc: Wang, Huaqiang <huaqiang.wang at intel.com>; Su, Tao
> <tao.su at intel.com>
> Subject: [PATCHv2 00/11] util/resctrl cleanups and refactors
> 
> Patches submitted for purpose of refactoring existing 'resctrl' related source
> code, including some code cleanups as well as some fixes. This is also a
> preparation for memory bandwidth monitor codes.
> 
> Plan to support Resctrl Control Monitors, which is a feature introduced by
> kernel 'resctrl' sub-model. Submit some cleanup and refactoring patches for
> upcoming memory bandwidth resource monitoring (MBM) monitors.
> 
> Related MBM RFC is
> https://www.redhat.com/archives/libvir-list/2019-April/msg01409.html.
> This RFC is not actively discussed since libvirt already implemented similar
> resctrl cache monitoring (CMT), and lots details have been discussed and
> implemented during the work of CMT.
> 
> The cleanups and refactoring includes:
> v2 changes:
> 1. Addressed comments of v1.
> 2. Introduce a new algorithm for verifying new monitor vcpus and existing
> monitors and allocations.
> 3. Fixes for creating default-allocation-monitor in 'resctrl' file system.(patch
> 0001).
> 
> v1 changes:
> 1. Removing some reluctant lines and white spaces that is existing in
> current code and not meet the libvirt coding style.
> 2. Replace 'virResctrlAllocIsEmpty' with @n==0 for indicating no resctrl
> allocation in configuration file.
> 3. Private API changes, removed 'virResctrlMonitorGetCacheOccupancy'
> and exported a new API named 'virResctrlMonitorGetStats' with similar
> functionality, but with capability to be used for retrieving MBM statistical
> information.
> 4. Refactoring 'virResctrlMonitorFreeStats' for more reusing in code.
> 5. Extend data structure 'virResctrlMonitorStats' with the capability to carry
> multiple statistical information from monitor.
> 
> Wang Huaqiang (11):
>   util,conf: Handle default monitor group of an allocation properly
>   conf: code cleanup, remove empty line and one space
>   conf: code cleanup for return error code directly
>   conf: some code cleanup
>   conf: refactor 'virDomainResctrlVcpuMatch' and some code cleanup
>   conf: Append 'resctrl' object according to number of monitor group
>     directly
>   util: Refactor and rename 'virResctrlMonitorFreeStats'
>   util: Refactor 'virResctrlMonitorStats'
>   util: Extend virresctl API to retrieve multiple monitor statistics
>   util: Remove unused virResctrlMonitorGetCacheOccupancy
>   conf: Refactor and rename the function to validate a new resctrl
>     monitor
> 
>  src/conf/domain_conf.c   | 145 ++++++++++++++++++++++++-----------------
> ------
>  src/libvirt_private.syms |   5 +-
>  src/qemu/qemu_driver.c   |  41 ++++++++++----
>  src/qemu/qemu_process.c  |   3 +-
>  src/util/virresctrl.c    |  75 ++++++++++--------------
>  src/util/virresctrl.h    |  23 +++++---
>  6 files changed, 156 insertions(+), 136 deletions(-)
> 
> --
> 2.7.4