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Date: Tue, 10 Nov 2015 05:48:00 -0000
Message-ID: <CA+MhoaM6TZ78MwftPq=KzEjxJDLoSspgr=vdhZe=7J9OTK9Sbw@mail.gmail.com>
Subject: Is there any better method to pass "-d OBJECT" options in command line?
From: Nan Xiao <xiaonan830818@gmail.com>
To: systemtap@sourceware.org
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Hi all,

I want  to track which functions calling fork, so I modify forktracker.stp
(https://sourceware.org/systemtap/examples/process/forktracker.stp):

probe kprocess.create {
  printf("%-25s: %s (%d:%d) created %d:%d\n",
         ctime(gettimeofday_s()), execname(), pid(), tid(), new_pid, new_tid)

  print_ubacktrace();
}

probe kprocess.exec {
  printf("%-25s: %s (%d) is exec'ing %s\n",
         ctime(gettimeofday_s()), execname(), pid(), filename)
  print_ubacktrace()
}

But after executing the script, I find it sometimes prompts warnings:

WARNING: Missing unwind data for module, rerun with 'stap -d
/usr/lib64/libpython2.7.so.1.0'
......
WARNING: Missing unwind data for module, rerun with 'stap -d
.../lib64/libvirt/connection-driver/libvirt_driver_interface.so'
WARNING: Missing unwind data for module, rerun with 'stap -d /bin/bash'


I can use "stap -d /usr/lib64/libpython2.7.so.1.0 -d .. -d ...
forktracker.stp" to resolve
this issue. But if there are many lacking libraries, the "-d ..."
options will cause command line
too long.

So my question is whether there is a better method to specify these
lacked "*.so" files?

Thanks in advance!

Best Regards
Nan Xiao