linux-kernel - Re: [PATCH v2] iommu: Add event tracing feature to iommu

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Message-ID: <20130814141758.GN28811@8bytes.org>
Date:	Wed, 14 Aug 2013 16:17:58 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Shuah Khan <shuah.kh@...sung.com>
Cc:	alex.williamson@...hat.com, Varun.Sethi@...escale.com,
	aik@...abs.ru, joe@...ches.com, rostedt@...dmis.org,
	fweisbec@...il.com, mingo@...hat.com, tony@...mide.com,
	ohad@...ery.com, andreas.herrmann@...xeda.com, will.deacon@....com,
	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
	shuahkhan@...il.com
Subject: Re: [PATCH v2] iommu: Add event tracing feature to iommu

Hi Shuah,

thanks for doing this. I have a few suggestions for improvements.

On Tue, Jul 30, 2013 at 08:57:09AM -0600, Shuah Khan wrote:
> iommu:add_device_to_group
> iommu:remove_device_from_group
> iommu:attach_device_to_domain
> iommu:detach_device_from_domain
> iommu:unmap
> iommu:map

Please send these events as seperate patches.

> iommu:amd_event

This needs some more thought. For now I would prefer an event in the
generic report_iommu_fault() routine to report page-faults from all IOMMUs
that support this.

Thanks,

	Joerg


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