[PATCH RFC v2 0/4] xen/arm: CONFIG_PARAVIRT and stolen ticks accounting

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

Hi all,
this patch series introduces stolen ticks accounting for Xen on ARM.
Stolen ticks are clocksource ticks that have been "stolen" from the cpu,
typically because Linux is running in a virtual machine and the vcpu has
been descheduled.
To account for these ticks we introduce CONFIG_PARAVIRT and pv_time_ops
so that we can make use of:

kernel/sched/cputime.c:steal_account_process_tick



Stefano Stabellini (4):
      xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c
      arm: introduce CONFIG_PARAVIRT and pv_time_ops
      kernel: missing include in cputime.c
      xen/arm: account for stolen ticks

 arch/arm/Kconfig                |    9 ++++
 arch/arm/include/asm/paravirt.h |   19 ++++++++
 arch/arm/kernel/Makefile        |    1 +
 arch/arm/kernel/paravirt.c      |   32 ++++++++++++++
 arch/arm/xen/enlighten.c        |   23 ++++++++++
 arch/ia64/xen/time.c            |   48 +++------------------
 arch/x86/xen/time.c             |   76 +--------------------------------
 drivers/xen/Makefile            |    2 +-
 drivers/xen/time.c              |   91 +++++++++++++++++++++++++++++++++++++++
 include/xen/xen-ops.h           |    5 ++
 kernel/sched/cputime.c          |    1 +
 11 files changed, 189 insertions(+), 118 deletions(-)
 create mode 100644 arch/arm/include/asm/paravirt.h
 create mode 100644 arch/arm/kernel/paravirt.c
 create mode 100644 drivers/xen/time.c



Cheers,

Stefano