linux-kernel - Re: [PATCH] iommu: Add device name to iommu map/unmap trace events

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Message-ID: <YGwlAqQVSV6k5z9j@8bytes.org>
Date:   Tue, 6 Apr 2021 11:08:18 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     "chenxiang (M)" <chenxiang66@...ilicon.com>
Cc:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-arm-msm@...r.kernel.org,
        Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org, linuxarm@...wei.com
Subject: Re: [PATCH] iommu: Add device name to iommu map/unmap trace events

On Tue, Apr 06, 2021 at 02:56:53PM +0800, chenxiang (M) wrote:
> Is it possible to use group id to identify different domains?

No, the best is to do this during post-processing of your traces by also
keeping tack of domain-device attachments/detachments.

Regards,

	Joerg