linux-kernel - Re: kmemleak suggestion (long message)

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Message-ID: <20090626065923.GA14078@elte.hu>
Date:	Fri, 26 Jun 2009 08:59:23 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Sergey Senozhatsky <sergey.senozhatsky@...l.by>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: kmemleak suggestion (long message)

* Sergey Senozhatsky <sergey.senozhatsky@...l.by> wrote:

> Hello.
> 
> Currently kmemleak prints info about all objects. I guess 
> sometimes kmemleak gives you more than you actually need.

It prints _a lot_ of info and spams the syslog. I lost crash info a 
few days ago due to that: by the time i inspected a crashed machine 
the tons of kmemleak output scrolled out the crash from the dmesg 
buffer.

This is not acceptable.

Instead it should perhaps print _at most_ a single line every few 
minutes, printing a summary about _how many_ leaked entries it 
suspects, and should offer a /debug/mm/kmemleak style of file where 
the entries can be read out from.

Ok?

	Ingo
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