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Message-ID: <20050121204422.85137.qmail@web53808.mail.yahoo.com>
Date: Fri, 21 Jan 2005 12:44:22 -0800 (PST)
From: Carl Spalletta <cspalletta@yahoo.com>
Subject: Linux-tracecalls, a clarification
To: linux-kernel@vger.kernel.org
Cc: Horst von Brand <vonbrand@inf.utfsm.cl>
In-Reply-To: <200501192037.j0JKbpuA008501@laptop11.inf.utfsm.cl>
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http://www.linuxrd.com/~carl/cgi-bin/lnxtc.pl?help

--- Horst von Brand <vonbrand@inf.utfsm.cl> wrote:
> Re: [ANNOUNCE] Linux-tracecalls, a new tool for Kernel development, released 
> 
> If it can't find out where a function could be called through a pointer
> (very common due to the OOP-in-C style in the kernel) it has no chance.

Dear Doctor von Brand,

  I believe the following should clear up your misunderstanding, perhaps due
to my poor original choice of words.

Carl Spalletta

PATCH #2
--- lnxtc-2.6.10.pl-    2005-01-21 00:16:33.000000000 -0500
+++ lnxtc-2.6.10.pl     2005-01-21 00:50:11.000000000 -0500
@@ -517,10 +517,22 @@
     $leaf_node = 0;
     $debug and print STDERR "\ncscope line is $full_caller_cscope";

-    #Target is a callback
+    #TARGET IS A PSEUDO-CALLBACK, AN ARTIFACT OF CSCOPE:
+    #
+    #The name of an operations structure member, wrongly interpreted by
+    #cscope as the name of an actual function - it should be ignored,
+    #since it has been confused by cscope with the name of some actual
+    #caller. HOWEVER the callbacks are found anyway, under their actual names.
+    #and if any function pointed to by a callback is part of a chain to
+    #our initial target it _will_ be found, the same as any other caller.
+    #
     if($full_caller_cscope =~ /\w+\s*->\s*${target_filefunc}\s*\(/)
     {
-      $debug and print STDERR "callback $target_filefunc ignored.\n";
+      $debug and
+        print STDERR "pseudo-callback $target_filefunc ignored.\n";
       next;
     }


-
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