linux-kernel - Re: [PATCH v12 1/3] PCI: trace: Add a generic RAS tracepoint for hotplug event

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Message-ID: <20251015103757.3d6f6cf7@gandalf.local.home>
Date: Wed, 15 Oct 2025 10:37:57 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Shuai Xue <xueshuai@...ux.alibaba.com>
Cc: lukas@...ner.de, linux-pci@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, helgaas@...nel.org,
 ilpo.jarvinen@...ux.intel.com, mattc@...estorage.com,
 Jonathan.Cameron@...wei.com, bhelgaas@...gle.com, tony.luck@...el.com,
 bp@...en8.de, mhiramat@...nel.org, mathieu.desnoyers@...icios.com,
 oleg@...hat.com, naveen@...nel.org, davem@...emloft.net,
 anil.s.keshavamurthy@...el.com, mark.rutland@....com, peterz@...radead.org,
 tianruidong@...ux.alibaba.com
Subject: Re: [PATCH v12 1/3] PCI: trace: Add a generic RAS tracepoint for
 hotplug event

On Wed, 15 Oct 2025 14:29:07 +0800
Shuai Xue <xueshuai@...ux.alibaba.com> wrote:

> Hi, Steve,
> 
> Thank you for your suggestion about passing the controller directly to
> the trace event. I investigated this approach, but unfortunately we
> cannot implement it due to structural limitations in the PCI hotplug
> subsystem.

Ah, that makes sense. Perhaps add a comment about this by the TRACE_EVENT()
so that I don't recommend this again ;-)

-- Steve