[CRIU] [PATCH 06/19] cpu: Prepare scaffold for obtaining cpu feature

[Cyrill Gorcunov]

While this patch may look a big one, in real it
does pretty simple things

 - adds ability to parse /proc/cpuinfo to find which
   FPU c/r modes _kernel_ does support (some features
   can be disabled via kernel command line)

 - adds ability to find some of rt-features the
   _cpu_ supports. In particular if xsave insn is
   supported we need to know how big memory slab
   is needed to keep complete fpu frame

 - it adds symbolic names for all the fetures known
   to the kernel at the moment, i decided to bring
   them all in because it allow us to extend parsing
   in more flexible way if needed (ie to add new feature
   parsing simply extend cpu_parse_flags by two lines of
   code)

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 Makefile             |    1 +
 cpu.c                |  109 +++++++++++++
 include/cpu.h        |  411 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/proc_parse.h |    2 +
 proc_parse.c         |   28 ++++
 5 files changed, 551 insertions(+), 0 deletions(-)
 create mode 100644 cpu.c
 create mode 100644 include/cpu.h

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