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

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Message-ID: <20061227165639.GA12082@elte.hu>
Date:	Wed, 27 Dec 2006 17:56:39 +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


* Ingo Molnar <mingo@...e.hu> wrote:

> > 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.

furthermore, i'd put "hardirq" into the comm copy if in_hardirq() is 
true, and i'd put "softirq" into the comm copy if !in_hardirq && 
in_softirq(). That way the allocation is not attributed to a process 
that has no real connection to it.

	Ingo
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