From: Andrii Anisov <andrii_anisov@epam.com>
That is the second attempt of the changes for the time accounting in XEN.
The initial topic is here [1].
In this series it is introduced a time accounting infrastructure separated
from runstates, and made an attempt to use new infra solely for taking
scheduling decissions.
This series still employs ideas of the initial series about what hypervisor,
idle and guest time are.
Yet, this series lacks of connection between new time accounting infra and
runstate. This is TODO, currently.
The main goal of this work is to improve time accounting precission as well
as avoiding charging guests for the other entities (guests or hypervisor itself)
work.
Changes from:
Initial RFC series [1]:
- Time accounting made independent from runstates infrastructure.
- Dropped odd patches to ARM64 code.
[1] https://lists.xenproject.org/archives/html/xen-devel/2019-07/msg01839.html
Andrii Anisov (9):
schedule: Introduce per-pcpu time accounting
sysctl: extend XEN_SYSCTL_getcpuinfo interface
xentop: show CPU load information
arm64: utilize time accounting
tacc: Introduce a lockless interface for guest time
sched:rtds: get guest time from time accounting code
tacc: Introduce a locked interface for guest time
sched:credit: get guest time from time accounting code
sched:credit2: get guest time from time accounting code
tools/xenstat/libxenstat/src/xenstat.c | 50 +++++++++
tools/xenstat/libxenstat/src/xenstat.h | 15 +++
tools/xenstat/libxenstat/src/xenstat_priv.h | 5 +
tools/xenstat/xentop/xentop.c | 36 ++++++
xen/arch/arm/arm64/entry.S | 39 ++++++-
xen/arch/arm/domain.c | 2 +
xen/common/Kconfig | 5 +
xen/common/sched_credit.c | 12 +-
xen/common/sched_credit2.c | 17 +--
xen/common/sched_rt.c | 4 +-
xen/common/schedule.c | 168 +++++++++++++++++++++++++++-
xen/common/sysctl.c | 4 +
xen/include/public/sysctl.h | 4 +
xen/include/xen/sched.h | 50 +++++++++
14 files changed, 386 insertions(+), 25 deletions(-)
--
2.7.4
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