linux-kernel - Re: kmemleak hexdump proposal

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Message-Id: <1246273108.21450.19.camel@pc1117.cambridge.arm.com>
Date:	Mon, 29 Jun 2009 11:58:28 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Sergey Senozhatsky <sergey.senozhatsky@...l.by>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: kmemleak hexdump proposal

On Mon, 2009-06-29 at 13:45 +0300, Sergey Senozhatsky wrote:
> BTW, printing it all the time we can spam kmemleak (in case there are objects sized 2K, 4K and so on).
> That's why I wrote about hexdump=OBJECT_POINTER.

I'm more in favour of an on/off hexdump feature (maybe even permanently
on) and with a limit to the number of bytes it displays. For larger
blocks, the hexdump=OBJECT_POINTER is easily achievable in user space
via /dev/kmem.

My proposal is for an always on hexdump but with no more than 2-3 lines
of hex values. As Pekka said, I should get it into linux-next before the
next merging window.

-- 
Catalin

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