linux-kernel - Re: [PATCH] Reduce __print_symbol/sprint

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Message-ID: <20070921145628.GE15697@goodmis.org>
Date:	Fri, 21 Sep 2007 10:56:29 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Paulo Marques <pmarques@...popie.com>
Cc:	Satyam Sharma <satyam@...radead.org>,
	Gilboa Davara <gilboad@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Reduce __print_symbol/sprint_symbol stack usage.

On Wed, Sep 19, 2007 at 03:25:15PM +0100, Paulo Marques wrote:
>
> if we change the interface from "print_symbol(fmt, addr)" to 
> "print_symbol(prefix, addr, int newline)" we can simply do:
>
> printk(prefix);
> printk_symbol(addr);
> if (newline)
> 	printk("\n");

NACK

I just wrote something that does "print_symbol(" %s)\n", addr);"
Notice the ")" in the output.

-- Steve

>
> where "printk_symbol" is a new function that does the same as 
> sprint_symbol, but does "printk" instead of "sprintf".
>
> This should reduce immensely the stack usage of print_symbol without the 
> need for locking.
>
> Of course this requires changing _all_ callers of print_symbol to use the 
> new interface, but these are less than 100 ;)
>
> Comments?
>
> -- 
> Paulo Marques - www.grupopie.com
>
> "You're just jealous because the voices only talk to me."
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