[PATCH 0/8] powerpc: Various fixes and enhancements for kprobes and ftrace

[Naveen N. Rao]

[Reposting this as I missed copying the distribution list in my
previous posting. For those who were copied previously, sorry for the spam]

This series initially started out as a fix for a single bug I found:
kernel Oops when jprobes is used with the function_graph tracer. Though
that particular bug turned out to be a solved problem on other
architectures (as seen in patch 1), my investigation revealed quite a
few other bugs as well as scope for optimizing our ftrace handlers.

This series includes all the fixes and enhancements I have made so far.
There are a few more bugs and fixes that I will be coding up and sending
across in a day or two.

This series has been run through ftrace selftests.

- Naveen

Naveen N. Rao (8):
  powerpc/kprobes: Pause function_graph tracing during jprobes handling
  powerpc/ftrace: Pass the correct stack pointer for
    DYNAMIC_FTRACE_WITH_REGS
  powerpc/ftrace: Remove redundant saving of LR in ftrace[_graph]_caller
  powerpc/kprobes_on_ftrace: Skip livepatch_handler() for jprobes
  powerpc/ftrace: Eliminate duplicate stack setup for
    ftrace_graph_caller()
  powerpc/ftrace: Add support for HAVE_FUNCTION_GRAPH_FP_TEST for
    -mprofile-kernel
  powerpc/livepatch: Clarify location of mcount call site
  powerpc/xmon: Disable function_graph tracing while in xmon

 arch/powerpc/include/asm/asm-prototypes.h      |   3 +-
 arch/powerpc/include/asm/ftrace.h              |   3 +
 arch/powerpc/include/asm/livepatch.h           |   4 +-
 arch/powerpc/kernel/kprobes.c                  |  15 +++-
 arch/powerpc/kernel/trace/ftrace.c             |   4 +-
 arch/powerpc/kernel/trace/ftrace_64.S          |   1 +
 arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 105 +++++++++++--------------
 arch/powerpc/xmon/xmon.c                       |   3 +
 8 files changed, 70 insertions(+), 68 deletions(-)

-- 
2.12.2