[PATCHv2 0/2] oprofile, x86: allow backtrace for 32bit apps under 64bit kernel

[Jiri Olsa <jolsa@redhat.com>]

hi,

I'm sending reworked version of the support for backtrace of ia32
applications under 64bit kernels.

updates are based on comments by Robert Richter

v2:
	- using struct stack_frame for 64bit processes
	- using struct stack_frame_ia32 for compat processes
	- added inline function x86_backtrace_32 which is
	  just empty stub for !CONFIG_COMPAT
	- I did not figure out a smart way to share dump code between
	  32 and 64 bits. I'm currently under impression the code is
	  so far easy and light enough to live separately and mixing
	  the code would come with more complexity.


attached patches:
- 1/2 using struct stack_frame for 64bit processes dump
- 2/2 adding backtrace dump for 32bit process in compat mode

please let me know what you think

thanks,
jirka
---
 arch/x86/oprofile/backtrace.c |   70 ++++++++++++++++++++++++++++++++++------
 1 files changed, 59 insertions(+), 11 deletions(-)