linux-kernel - Re: [PATCH 3/4] tracing: Annotate event field-defining functions with _

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Date:	Fri, 01 Mar 2013 22:48:47 -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 3/4] tracing: Annotate event field-defining functions
 with __init

On Thu, 2013-02-21 at 10:33 +0800, Li Zefan wrote:
> Those functions are called either during kernel boot or module init.
> 
> Before:
> 
> $ dmesg | grep 'Freeing unused kernel memory'
> Freeing unused kernel memory: 1208k freed
> Freeing unused kernel memory: 1360k freed
> Freeing unused kernel memory: 1960k freed
> 
> After:
> 
> $ dmesg | grep 'Freeing unused kernel memory'
> Freeing unused kernel memory: 1236k freed
> Freeing unused kernel memory: 1388k freed
> Freeing unused kernel memory: 1960k freed

Also nice :-)

Here's my numbers (again with lots of debug enabled):

old:
[    0.027087] Freeing SMP alternatives: 12k freed
[    6.835298] Freeing initrd memory: 8004k freed
[   18.820837] Freeing unused kernel memory: 1092k freed
[   18.838487] Freeing unused kernel memory: 1456k freed
[   18.850665] Freeing unused kernel memory: 1544k freed

new:
[    0.025087] Freeing SMP alternatives: 12k freed
[    6.775349] Freeing initrd memory: 8004k freed
[   18.753519] Freeing unused kernel memory: 1144k freed
[   18.771447] Freeing unused kernel memory: 1508k freed
[   18.783637] Freeing unused kernel memory: 1544k freed

Lets hope these pass all my tests.

-- Steve



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