linux-kernel - [GIT PULL][2.6.31] tracing: have recordmcount.pl handle a section with only weak functions

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Message-ID: <alpine.DEB.2.00.0908062000400.2840@gandalf.stny.rr.com>
Date:	Thu, 6 Aug 2009 20:01:44 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Greg KH <gregkh@...e.de>, Roland Dreier <rdreier@...co.com>,
	Matt Fleming <matt@...sole-pimps.org>,
	David Kiliani <mail@...idkiliani.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [GIT PULL][2.6.31] tracing: have recordmcount.pl handle a section
 with only weak functions


Ingo,

Please pull the latest tip/tracing/urgent tree, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
tip/tracing/urgent


Steven Rostedt (1):
      tracing: have recordmcount.pl handle a section with only weak functions

----
 scripts/recordmcount.pl |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---------------------------
commit 0484219980fd985528f66bf620362859e617bb37
Author: Steven Rostedt <srostedt@...hat.com>
Date:   Thu Aug 6 19:53:18 2009 -0400

    tracing: have recordmcount.pl handle a section with only weak functions
    
    Roland Dreier found that a section that contained only a weak function
    in one of the staging drivers and this caused recordmcount.pl to spit
    out a warning and fail.  Although it is strange that a driver would have
    a weak function, and this function only be used in one place, it should
    not be something to make recordmcount.pl fail.
    
    This patch fixes the issue in a simple manner. If only weak functions
    exist in a section, than that section will not be recorded.
    
    Reported-by: Roland Dreier <rdreier@...co.com>
    Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 4889c44..911ba7f 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -393,7 +393,7 @@ while (<IN>) {
 	    $read_function = 0;
 	}
 	# print out any recorded offsets
-	update_funcs() if ($text_found);
+	update_funcs() if (defined($ref_func));
 
 	# reset all markers and arrays
 	$text_found = 0;
@@ -444,7 +444,7 @@ while (<IN>) {
 }
 
 # dump out anymore offsets that may have been found
-update_funcs() if ($text_found);
+update_funcs() if (defined($ref_func));
 
 # If we did not find any mcount callers, we are done (do nothing).
 if (!$opened) {


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