linux-kernel - Re: [PATCH] more helpful WARN_ON and BUG

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Message-ID: <453C3488.2050401@redhat.com>
Date:	Sun, 22 Oct 2006 22:18:32 -0500
From:	Eric Sandeen <esandeen@...hat.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Eric Sandeen <sandeen@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH] more helpful WARN_ON and BUG_ON messages

Jeremy Fitzhardinge wrote:

> This seems like a generally useful idea - certainly more valuable than 
> storing+printing the function name.
> 
> You might want to look at the BUG patches I wrote, which are currently 
> in -mm.  I added general machinery to allow architectures to easily 
> implement BUG() efficiently (ie, with a minimal amount of BUG-related 
> icache pollution).  If you were to store the BUG_ON expression, it would 
> be best to extend struct bug_entry and store it there - doing it in 
> asm-generic BUG_ON() means you still end up with code to set up the 
> printk in the mainline code path, and it also won't honour 
> CONFIG_DEBUG_BUGVERBOSE being disabled.

Thanks, I missed that change... I'll look into it.

-Eric
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