[libvirt] [PATCHv10 0/4] Introduce x86 Cache Monitoring Technology (CMT)

[Wang, Huaqiang]

Hi John,

Really appreciate your hard work for the CMT series. Next I'll working on the MBM.

In testing the newly pushed code, I find a problem:

<error message>
[david at dl-c200 ~]$ sudo virsh domstats
error: An error occurred, but the cause is unknown
</error message>

seems it is caused by qemuDomainGetStatsIOThread not by the new series.
What I test is return 0 immediately at top of qemuDomainGetStatsIOThread, the
command 'virsh domstats' reports the cache statistics normally.

BR
Huaqiang

> -----Original Message-----
> From: John Ferlan [mailto:jferlan at redhat.com]
> Sent: Tuesday, November 27, 2018 9:49 AM
> To: Wang, Huaqiang <huaqiang.wang at intel.com>; libvir-list at redhat.com
> Subject: Re: [PATCHv10 0/4] Introduce x86 Cache Monitoring Technology
> (CMT)
> 
> 
> 
> On 11/26/18 12:56 PM, Wang Huaqiang wrote:
> > These patches are the remaining part for the CMT enabling series, and
> > most of the series have been merged.
> >
> > This series is addressing John's review comments and suggestions,
> > which are
> > https://www.redhat.com/archives/libvir-list/2018-
> November/msg00907.htm
> > l
> > https://www.redhat.com/archives/libvir-list/2018-
> November/msg00510.htm
> > l
> > https://www.redhat.com/archives/libvir-list/2018-
> November/msg00561.htm
> > l
> >
> > Change lists:
> > Changes in v10:
> > -. Add tag (virResctrlMonitorType) in qemuDomainGetResctrlMonData,
> thus
> >    qemuDomainGetResctrlMonData could be reused for MBM.
> > -. Using VIR_APPEND_ELEMENT to append virQEMUResctrlMonDataPtr
> list.
> > -. Add qemuDomainFreeResctrlMonData.
> > -. Add virResctrlMonitorFreeStats.
> > -. Return a list of virResctrlMonitorStatsPtr instead of
> >    a virResctrlMonitorStats array in virResctrlMonitorGetStats.
> >
> > Changes in V9:
> > -. Addressing code review comments form John.
> > -. Refined the names for new data structure and new functions.
> > -. Merged qemuDomainGetStatsCpuResMonitorPerTag and
> qemuDomainGetStatsCpuResMonitor,
> >    and refined new function name based on the fact that we only support
> cache monitor now.
> > Wang Huaqiang (4):
> >   util: Return a list of pointer in virResctrlMonitorGetStats
> >   util: Add function to free monitor statistical data
> >   qemu: Report cache occupancy (CMT) with domstats
> >   docs: Updated news.xml for CMT
> >
> >  docs/news.xml            |  12 ++++
> >  src/libvirt-domain.c     |  12 ++++
> >  src/libvirt_private.syms |   1 +
> >  src/qemu/qemu_driver.c   | 183
> ++++++++++++++++++++++++++++++++++++++++++++++-
> >  src/util/virresctrl.c    |  26 +++++--
> >  src/util/virresctrl.h    |   8 ++-
> >  tools/virsh.pod          |  14 ++++
> >  7 files changed, 248 insertions(+), 8 deletions(-)
> >
> 
> Reviewed-by: John Ferlan <jferlan at redhat.com>
> (series)
> 
> and pushed,
> 
> John