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

[Catalin Marinas]

On 27/12/06, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> On Wed, 2006-12-27 at 16:14 +0000, Catalin Marinas wrote:
> > On 17/12/06, Ingo Molnar <mingo@xxxxxxx> 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?
>
> well you take the lock from irq context, which means it needs to use
> _irqsave/restore everywhere. (and all locks taken inside it must be irq
> safe as well)
>
> maybe.. not use  comm in irq context? it doesn't actually mean anything
> there anyway...

Thanks. Done this and it is ok now.

--
Catalin
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