linux-kernel - Re: [PATCH v3] filter local function prefixed by $L

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Date:	Mon, 15 Jun 2009 08:59:51 -0700
From:	David Daney <ddaney@...iumnetworks.com>
To:	Wu Zhangjin <wuzhangjin@...il.com>
CC:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Wang Liming <liming.wang@...driver.com>,
	Wu Zhangjin <wuzj@...ote.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nicholas Mc Guire <der.herr@...r.at>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH v3] filter local function prefixed by $L

Wu Zhangjin wrote:
> From: Wu Zhangjin <wuzj@...ote.com>
> 
> this patch fixed the warning as following:
> 
> mipsel-linux-gnu-objcopy: 'fs/proc/.tmp_gl_devices.o': No such file
> mipsel-linux-gnu-ld: fs/proc/.tmp_gl_devices.o: No such file: No such
> file or directory
> rm: cannot remove `fs/proc/.tmp_gl_devices.o': No such file or directory
> rm: cannot remove `fs/proc/.tmp_mx_devices.o': No such file or directory
> 
> the real reason of above warning is that the $Lxx local functions will
> be treated as global symbols, so, should be filtered.
> 
> Signed-off-by: Wu Zhangjin <wuzj@...ote.com>
> ---
>  scripts/recordmcount.pl |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
> index 533d3bf..542cb04 100755
> --- a/scripts/recordmcount.pl
> +++ b/scripts/recordmcount.pl
> @@ -343,6 +343,10 @@ sub update_funcs
>  	if (!$use_locals) {
>  	    return;
>  	}
> +	# filter $LXXX tags
> +	if ("$ref_func" =~ m/\$L/) {
> +		return;
> +	}

Certainly this is true for mips.  I doubt it is for all architectures 
targed by Linux.

David Daney


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