linux-kernel - Re: [RFC/PATCH] ratelimit: make output more useful

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Message-ID: <20091023131114.GB27097@elte.hu>
Date:	Fri, 23 Oct 2009 15:11:14 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christian Borntraeger <borntraeger@...ibm.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Young <hidave.darkstar@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC/PATCH] ratelimit: make output more useful


* Christian Borntraeger <borntraeger@...ibm.com> wrote:

> Am Freitag 23 Oktober 2009 13:33:48 schrieb Ingo Molnar:
> > Mind sending it against latest tip:master (or tip:core/printk):
> [...]
> > Which has a couple of ratelimit changes queued up already that collide
> > with your patch:
> 
> Sure, something like the following?
> 
> [PATCH] ratelimit: make output more useful
> 
> Today I got 
> 
> [39648.224782] Registered led device: iwl-phy0::TX
> [40676.545099] __ratelimit: 246 callbacks suppressed
> [40676.545103] abcdef[23675]: segfault at 0 ...

btw., an effect of this will be a small amount of extra bloat at every 
callsite of printk_ratelimit(). There's 200 of them kernel-wide, so i 
guess it's OK as all these codepaths are atypical slowpaths already.

	Ingo
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