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Date:   Tue, 6 Apr 2021 15:49:23 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Yicong Yang <yangyicong@hisilicon.com>
Cc:     alexander.shishkin@linux.intel.com, helgaas@kernel.org,
        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        lorenzo.pieralisi@arm.com, jonathan.cameron@huawei.com,
        song.bao.hua@hisilicon.com, prime.zeng@huawei.com,
        linux-doc@vger.kernel.org, linuxarm@huawei.com
Subject: Re: [PATCH 0/4] Add support for HiSilicon PCIe Tune and Trace device
Message-ID: <YGxm49c9cT69NV5Q@kroah.com>
References: <1617713154-35533-1-git-send-email-yangyicong@hisilicon.com>
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On Tue, Apr 06, 2021 at 08:45:50PM +0800, Yicong Yang wrote:
> HiSilicon PCIe tune and trace device(PTT) is a PCIe Root Complex
> integrated Endpoint(RCiEP) device, providing the capability
> to dynamically monitor and tune the PCIe traffic(tune),
> and trace the TLP headers(trace). The driver exposes the user
> interface through debugfs, so no need for extra user space tools.
> The usage is described in the document.

Why use debugfs and not the existing perf tools for debugging?

thanks,

greg k-h