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Date: Tue, 17 Apr 2007 12:27:00 -0000
From: "srinivasa at in dot ibm dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Message-ID: <20070417132651.4384.srinivasa@in.ibm.com>
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Subject: [Bug kprobes/4384] New: Problem in making kprobe modules portable across all the archtecture.
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When data symbols are not present in kernel image, one has to add dot(".")
before function name, that he wants to probe in kprobe module on ppc64. 
Hence kernel module may not become portable across all the architecture.

When data symbols are missing on ppc64,
====================
[root@llm27lp1 ~]# cat /proc/kallsyms | grep do_fork
c00000000006283c T .do_fork
==============================
kp.symbol_name = ".do_fork";
============================
But if data symbols were included, then it looks like this
================
llm27lp2:~ # cat /proc/kallsyms |grep do_fork
c00000000005de28 T .do_fork
c0000000005fbe88 D do_fork
======================
kp.symbol_name = ".do_fork";
===============================

Iam attaching patch here, which solves this problem. Please let me know your
comments on this.

Thanks
 Srinivasa DS

-- 
           Summary: Problem in making kprobe modules portable across all the
                    archtecture.
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: kprobes
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: srinivasa at in dot ibm dot com
                CC: ananth at in dot ibm dot com,anil dot s dot
                    keshavamurthy at intel dot com,jkenisto at us dot ibm
                    dot com,prasanna at in dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=4384

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