linux-kernel - Re: [PATCH 2.6.20-rc1 00/10] Kernel memory leak detector 0.13

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Message-ID: <20061227164745.GA10077@elte.hu>
Date:	Wed, 27 Dec 2006 17:47:45 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Catalin Marinas <catalin.marinas@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.20-rc1 00/10] Kernel memory leak detector 0.13


* Catalin Marinas <catalin.marinas@...il.com> wrote:

> On 17/12/06, Ingo Molnar <mingo@...e.hu> wrote:
> >it would be nice to record 1) the jiffies value at the time of
> >allocation, 2) the PID and the comm of the task that did the allocation.
> >The jiffies timestamp would be useful to see the age of the allocation,
> >and the PID/comm is useful for context.
> 
> Trying to copy the comm with get_task_comm, I get the lockdep report 
> below, caused by acquiring the task's alloc_lock. Any idea how to go 
> around this?

just memcpy p->comm without any locking. It's for the current task, 
right? That does not need any locking.

	Ingo
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