linux-kernel - Re: [PATCH 7/9] tracing: recordmcount.pl Combine the condition validation in update

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Date:	Tue, 27 Oct 2009 16:22:56 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Li Hong <lihong.hi@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/9] tracing: recordmcount.pl Combine the condition
 validation in update_funcs

On Tue, 2009-10-27 at 15:03 +0800, Li Hong wrote:
> >From d0aa9b99e4ffd13fada96bfe1651055b459e9988 Mon Sep 17 00:00:00 2001
> From: Li Hong <lihong.hi@...il.com>
> Date: Tue, 27 Oct 2009 13:20:48 +0800
> Subject: [PATCH] tracing: recordmcount.pl Combine the condition validation in update_funcs
> 
> Move all the condition validation into function update_funcs. Also
> update_funcs shouldn't die if $ref_func is undefined for there may be
> more than one valid sections in an object file.
> 

Nice clean up!

-- Steve

> Signed-off-by: Li Hong <lihong.hi@...il.com>
> 
> diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
> index d750da8..490b4cd 100755
> --- a/scripts/recordmcount.pl
> +++ b/scripts/recordmcount.pl
> @@ -350,9 +350,7 @@ my $offset = 0;		# offset of ref_func to section beginning
>  #
>  sub update_funcs
>  {
> -    return if ($#offsets < 0);
> -
> -    defined($ref_func) || die "No function to reference";
> +    return unless ($ref_func and @offsets);
>  
>      # A section only had a weak function, to represent it.
>      # Unfortunately, a weak function may be overwritten by another
> @@ -426,7 +424,7 @@ while (<IN>) {
>  	    $read_function = 0;
>  	}
>  	# print out any recorded offsets
> -	update_funcs() if (defined($ref_func));
> +	update_funcs();
>  
>  	# reset all markers and arrays
>  	$text_found = 0;
> @@ -463,7 +461,7 @@ while (<IN>) {
>  }
>  
>  # dump out anymore offsets that may have been found
> -update_funcs() if (defined($ref_func));
> +update_funcs();
>  
>  # If we did not find any mcount callers, we are done (do nothing).
>  if (!$opened) {

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