linux-kernel - Re: [PATCH 2/4] tracing: Add a helper function for event print functions

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Date:	Fri, 01 Mar 2013 22:37:35 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Li Zefan <lizefan@...wei.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] tracing: Add a helper function for event print
 functions

On Thu, 2013-02-21 at 10:32 +0800, Li Zefan wrote:
> Move duplicate code in event print functions to a helper function.
> 
> This shrinks the size of the kernel by ~13K.
> 
>    text    data     bss     dec     hex filename
> 6596137 1743966 10138672        18478775        119f6b7 vmlinux.o.old
> 6583002 1743849 10138672        18465523        119c2f3 vmlinux.o.new

Nice! I just tried it out and got:

   text    data     bss     dec     hex filename
7747813 1673816 1503232 10924861         a6b33d vmlinux.old
7715443 1673560 1499136 10888139         a623cb vmlinux.new

Of course I have a lot of debugging enabled at the moment, which
probably exaggerates these numbers a bit. But still, 36K in savings is
nice for even a debug kernel :-)

I'll start beating on this patch for a bit, and will most likely add it
to my v3.10 queue.

Thanks!

-- Steve


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