linux-kernel - Re: [PATCH 2/3] introduce probe_slab

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Date:	Tue, 28 Oct 2014 16:01:02 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Kirill Tkhai <ktkhai@...allels.com>
Cc:	Oleg Nesterov <oleg@...hat.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Kirill Tkhai <tkhai@...dex.ru>,
	Christoph Lameter <cl@...ux.com>
Subject: Re: [PATCH 2/3] introduce probe_slab_address()

On Tue, Oct 28, 2014 at 08:44:51AM +0300, Kirill Tkhai wrote:
> В Пн, 27/10/2014 в 20:54 +0100, Oleg Nesterov пишет:

> > +#define probe_slab_address(addr, retval)	\
> > +	probe_kernel_address(addr, retval)
> 
> probe_kernel_read() was arch-dependent on tree platforms:
> 
> arch/blackfin/mm/maccess.c
> arch/parisc/lib/memcpy.c
> arch/um/kernel/maccess.c
> 
> But now we skip these arch-dependent implementations. Is there no a problem?

Nope, see the first patch, it makes probe_kernel_address use
__probe_kernel_read().
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