linux-kernel - Re: [PATCH v14 14/34] PCI/AER: Report CXL or PCIe bus type in AER trace logging

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Message-ID: <20260114194539.0000662b@huawei.com>
Date: Wed, 14 Jan 2026 19:45:39 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Terry Bowman <terry.bowman@....com>
CC: <dave@...olabs.net>, <dave.jiang@...el.com>, <alison.schofield@...el.com>,
	<dan.j.williams@...el.com>, <bhelgaas@...gle.com>, <shiju.jose@...wei.com>,
	<ming.li@...omail.com>, <Smita.KoralahalliChannabasappa@....com>,
	<rrichter@....com>, <dan.carpenter@...aro.org>,
	<PradeepVineshReddy.Kodamati@....com>, <lukas@...ner.de>,
	<Benjamin.Cheatham@....com>, <sathyanarayanan.kuppuswamy@...ux.intel.com>,
	<linux-cxl@...r.kernel.org>, <vishal.l.verma@...el.com>, <alucerop@....com>,
	<ira.weiny@...el.com>, <linux-kernel@...r.kernel.org>,
	<linux-pci@...r.kernel.org>, <M.Chehab@...wei.com>
Subject: Re: [PATCH v14 14/34] PCI/AER: Report CXL or PCIe bus type in AER
 trace logging

On Wed, 14 Jan 2026 12:20:35 -0600
Terry Bowman <terry.bowman@....com> wrote:

> The AER service driver and aer_event tracing currently log 'PCIe Bus Type'
> for all errors. Update the driver and aer_event tracing to log 'CXL Bus
> Type' for CXL device errors.
> 
> This requires that AER can identify and distinguish between PCIe errors and
> CXL errors.
> 
> Introduce boolean 'is_cxl' to 'struct aer_err_info'. Add assignment in
> aer_get_device_error_info() and pci_print_aer().
> 
> Update the aer_event trace routine to accept a bus type string parameter.
> 
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Co-developed-by: Dan Williams <dan.j.williams@...el.com>
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>

I wonder if it is worth using __print_symbolic() etc and an integer
storage rather than a string for in the tracepoints.
However, not really that important to me as the strings are small anyway
and there is no precedence of this in ras trace events.

Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>