[PATCH][BUGFIX] backtracing test and runtime bugfixes

[Masami Hiramatsu]

Hi,

I found that the backtrace testcase still failed, and I tried to fix that.

Here are 3 patches which fix bugs related to backtrace tests.

[1/3] runtime-fix-stack-ia64.patch
   This patch fixes a bug that print_backtrace() and print_stack() shows
   current ip twice on ia64.
   The __stp_show_stack_sym() have to skip the case of ip == REG_IP(regs)
   as same as __stp_show_stack_addr() does.

[2/3] testsuite-fix-backtrace.patch
   This patch fixes a regexp pattern in testsuite/systemtap.context/backtrace.tcl,
   because the backtrace format is changed recently from "kfunc+0x1/0x1 + []" to
   "kfunc+0x1/0x1".

[3/3] testsuite-ia64-fix-backtrace.patch
   This patch adds a regexp pattern for return probe on ia64 in
   testsuite/systemtap.context/backtrace.tcl.
   In return probe, print_stack() shows "kretprobe_trampoline_holder" generally,
   but on ia64, it shows "yyy_func3". So, we need special regexp. And this means
   that the outputs of print_stack() in function entry and function return become same.
   Thus, this patch also adds additional marks for differentiating between each cases to
   backtrace.stp.

Thanks,

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@redhat.com

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