linux-kernel - Re: [PATCH v13 0/3] PCI: trace: Add a RAS tracepoint to monitor link speed changes

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Message-ID: <bed37798-8c38-4669-b841-45924473696a@linux.alibaba.com>
Date: Tue, 9 Dec 2025 21:19:00 +0800
From: Shuai Xue <xueshuai@...ux.alibaba.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: 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, rostedt@...dmis.org,
 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
Subject: Re: [PATCH v13 0/3] PCI: trace: Add a RAS tracepoint to monitor link
 speed changes



在 2025/11/4 17:34, Shuai Xue 写道:
> 
> 
> 在 2025/10/25 19:41, Shuai Xue 写道:
>> changes since v12:
>> - add Reviewed-by tag for PATCH 1 from Steve
>> - add Reviewed-by tag for PATCH 1-3 from Ilpo
>> - add comments for why use string to define tracepoint per Steve
>> - minor doc improvements from Ilpo
>> - remove use pci_speed_string to fix PCI dependends which cause build error on sparc64
>>
>> changes since v11:
>> - rebase to Linux 6.18-rc1 (no functional changes)
>>
>> changes since v10:
>> - explicitly include header file per Ilpo
>> - add comma on any non-terminator entry  per Ilpo
>> - compile trace.o under CONFIG_TRACING per Ilpo
>>
>> changes since v9:
>> - add a documentation about PCI tracepoints per Bjorn
>> - create a dedicated drivers/pci/trace.c that always defines the PCI tracepoints per Steve
>> - move tracepoint callite into __pcie_update_link_speed() per Lukas and Bjorn
>>
>> changes since v8:
>> - rewrite commit log from Bjorn
>> - move pci_hp_event to a common place (include/trace/events/pci.h) per Ilpo
>> - rename hotplug event strings per Bjorn and Lukas
>> - add PCIe link tracepoint per Bjorn, Lukas, and Ilpo
>>
>> changes since v7:
>> - replace the TRACE_INCLUDE_PATH to avoid macro conflict per Steven
>> - pick up Reviewed-by from Lukas Wunner
>>
>> Hotplug events are critical indicators for analyzing hardware health, and
>> surprise link downs can significantly impact system performance and reliability.
>> In addition, PCIe link speed degradation directly impacts system performance and
>> often indicates hardware issues such as faulty devices, physical layer problems,
>> or configuration errors.
>>
>> This patch set add PCI hotplug and PCIe link tracepoint to help analyze PCI
>> hotplug events and PCIe link speed degradation.
>>
>> Shuai Xue (3):
>>    PCI: trace: Add a generic RAS tracepoint for hotplug event
>>    PCI: trace: Add a RAS tracepoint to monitor link speed changes
>>    Documentation: tracing: Add documentation about PCI tracepoints
>>
> 
> Hi, Bjorn,
> 
> Gentle ping.
> 
> Do you have any further concerns about this patch set?
> 
> Shuai

Hi, all,

Gentle ping.

Thanks.
Shuai