[PATCH 0/3] Introduce Xen fault injection facility

[Stanislav Kinsburskii]

This series adds a facility, which can be used to instrument Xen code with
fault injections.
It is based "Fault injection capabilities infrastructure" described here:
- Documentation/fault-injection/fault-injection.txt

First patch adds a generic facility to use anywhere in Xen.
When using it all the fault injection user land control directories (if
any) will appear here:
- /sys/kernel/debug/xen/fault_inject/

To distinguish with generic (or core) Xen fault injections, next two
patches add additional directories to the root path above for blkback and
netback drivers respectively:
- /sys/kernel/debug/xen/fault_inject/xen-blkback/
- /sys/kernel/debug/xen/fault_inject/xen-netback/

---

Stanislav Kinsburskii (3):
      xen: add generic fault injection facility
      xen netback: add fault injection facility
      xen blkback: add fault injection facility


 arch/x86/xen/Kconfig                   |    7 ++
 arch/x86/xen/Makefile                  |    1 
 arch/x86/xen/fault_inject.c            |  109 +++++++++++++++++++++++++++++
 drivers/block/Kconfig                  |    7 ++
 drivers/block/xen-blkback/Makefile     |    1 
 drivers/block/xen-blkback/blkback.c    |    9 ++
 drivers/block/xen-blkback/blkback_fi.c |  116 +++++++++++++++++++++++++++++++
 drivers/block/xen-blkback/blkback_fi.h |   37 ++++++++++
 drivers/block/xen-blkback/common.h     |    3 +
 drivers/block/xen-blkback/xenbus.c     |    5 +
 drivers/net/Kconfig                    |    8 ++
 drivers/net/xen-netback/Makefile       |    1 
 drivers/net/xen-netback/common.h       |    3 +
 drivers/net/xen-netback/netback.c      |    3 +
 drivers/net/xen-netback/netback_fi.c   |  119 ++++++++++++++++++++++++++++++++
 drivers/net/xen-netback/netback_fi.h   |   35 +++++++++
 drivers/net/xen-netback/xenbus.c       |    6 ++
 include/xen/fault_inject.h             |   45 ++++++++++++
 18 files changed, 515 insertions(+)
 create mode 100644 arch/x86/xen/fault_inject.c
 create mode 100644 drivers/block/xen-blkback/blkback_fi.c
 create mode 100644 drivers/block/xen-blkback/blkback_fi.h
 create mode 100644 drivers/net/xen-netback/netback_fi.c
 create mode 100644 drivers/net/xen-netback/netback_fi.h
 create mode 100644 include/xen/fault_inject.h
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