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

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To: "chenxiang (M)" <chenxiang66@xxxxxxxxxxxxx>
Subject: Re: [PATCH] iommu: Add device name to iommu map/unmap trace events
From: Joerg Roedel <joro@xxxxxxxxxx>
Date: Tue, 6 Apr 2021 11:08:18 +0200
Cc: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, Robin Murphy <robin.murphy@xxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linuxarm@xxxxxxxxxx
In-reply-to: <626fbcb8-b84f-1522-4ec3-9c7c1f5f7a93@hisilicon.com>
References: <20210209123620.19993-1-saiprakash.ranjan@codeaurora.org> <20210212105039.GG7302@8bytes.org> <626fbcb8-b84f-1522-4ec3-9c7c1f5f7a93@hisilicon.com>

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

References:
- [PATCH] iommu: Add device name to iommu map/unmap trace events
  - From: Sai Prakash Ranjan
- Re: [PATCH] iommu: Add device name to iommu map/unmap trace events
  - From: Joerg Roedel
- Re: [PATCH] iommu: Add device name to iommu map/unmap trace events
  - From: chenxiang (M)

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