[PATCH v5 00/10] powerpc64/ftrace: Add support for ftrace_modify_call() and a few other fixes

["Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>]

This is v5 of the patches posted at:
https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=37250

This series has been tested using mambo for p8 (hash) and p9 (radix), 
and also on Power8 host.

In v5, the patch for KVM has been re-worked and is now [6/10], instead 
of [2/10]. This now works properly on a Power8 machine. More details in 
the patch. All other patches are unchanged from v4.


- Naveen


Naveen N. Rao (10):
  powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code
    paths
  powerpc64/ftrace: Rearrange #ifdef sections in ftrace.h
  powerpc64/ftrace: Add helpers to hard disable ftrace
  powerpc64/ftrace: Delay enabling ftrace on secondary cpus
  powerpc64/ftrace: Disable ftrace during hotplug
  powerpc64/ftrace: Disable ftrace during kvm entry/exit
  powerpc64/kexec: Hard disable ftrace before switching to the new
    kernel
  powerpc64/module: Tighten detection of mcount call sites with
    -mprofile-kernel
  powerpc64/ftrace: Use the generic version of ftrace_replace_code()
  powerpc64/ftrace: Implement support for ftrace_regs_caller()

 arch/powerpc/include/asm/ftrace.h             |  27 ++-
 arch/powerpc/include/asm/module.h             |   3 +
 arch/powerpc/include/asm/paca.h               |   1 +
 arch/powerpc/kernel/asm-offsets.c             |   1 +
 arch/powerpc/kernel/machine_kexec.c           |   2 +
 arch/powerpc/kernel/module_64.c               |  43 ++--
 arch/powerpc/kernel/setup_64.c                |   7 +
 arch/powerpc/kernel/smp.c                     |  12 +
 arch/powerpc/kernel/trace/ftrace.c            | 210 ++++++++++++++----
 .../powerpc/kernel/trace/ftrace_64_mprofile.S |  85 ++++++-
 arch/powerpc/kernel/trace/ftrace_64_pg.S      |   4 +
 arch/powerpc/kvm/book3s_hv.c                  |   4 +
 arch/powerpc/kvm/book3s_hv_rmhandlers.S       |   3 +
 13 files changed, 335 insertions(+), 67 deletions(-)

-- 
2.17.0