[Bug tapsets/7030] signal tapset may be referring to inline functions.

["prasad at linux dot vnet dot ibm dot com" <sourceware-bugzilla@sourceware.org>]

------- Additional Comments From prasad at linux dot vnet dot ibm dot com  2008-11-18 09:51 -------
The behaviour described below can be attributed to the fact that probe 
_signal.send.part1 and probe _signal.send.part4 which respectively point to the 
kernel functions __group_send_sig_info() and specific_send_sig_info() have been 
inlined.

The sudden inlining of these funtions could be the result of changes made to 
these functions through commit 4cd4b6d4e0372075f846feb85aea016cbdbfec4c that 
made them a mere wrapper over send_signal(). Following this change, and due to 
the fact that the wrapper functions are being inlined by the compiler, we shall 
point these probe aliases directly to send_signal() with the appropriate names 
and function parameters. The probe aliases are restricted to kernel versions 
newer than 2.6.25.

On application of the attached patch, the script sig_by_pid.stp is found to 
work fine on the Fedora kernel 2.6.27.5-101.fc10.i686. It is pending testing on 
a kernel older than 2.6.25 though. Requesting comments, if any.


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http://sourceware.org/bugzilla/show_bug.cgi?id=7030

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