[v4,0/3] Support fd-based KVM stats

Message

Mark Kanda Feb. 15, 2022, 3:04 p.m. UTC

This patchset adds QEMU support for querying fd-based KVM stats. The
kernel support was introduced by:

cb082bfab59a ("KVM: stats: Add fd-based API to read binary stats data")

v4:
- revise and cleanup the API [Daniel, Paolo]
- filtering for multiple providers [Daniel]
- cache KVM stat descriptors [Paolo]
- use g_autofree and other cleanup [Daniel]

v3:
- various QMP API enhancements from review [Daniel, Paolo, Igor]
- general cleanup

v2: [Paolo]
- generalize the interface
- add support for querying stat schema and instances
- add additional HMP semantic processing for a few exponent/unit
  combinations (related to seconds and bytes)

Mark Kanda (3):
  qmp: Support for querying stats
  hmp: Support for querying stats
  kvm: Support for querying fd-based stats

 accel/kvm/kvm-all.c     | 393 ++++++++++++++++++++++++++++++++++++++++
 hmp-commands-info.hx    |  28 +++
 include/monitor/hmp.h   |   2 +
 include/monitor/stats.h |  51 ++++++
 monitor/hmp-cmds.c      | 328 +++++++++++++++++++++++++++++++++
 monitor/qmp-cmds.c      | 219 ++++++++++++++++++++++
 qapi/meson.build        |   1 +
 qapi/qapi-schema.json   |   1 +
 qapi/stats.json         | 259 ++++++++++++++++++++++++++
 9 files changed, 1282 insertions(+)
 create mode 100644 include/monitor/stats.h
 create mode 100644 qapi/stats.json