linux-kernel - Re: [PATCH V3 1/1] PCI/AER: add pcie TLP header information in the tracepoint

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Message-ID: <f3248367-f702-2dba-5406-a1ba275e198a@oracle.com>
Date:   Wed, 9 May 2018 10:12:42 -0400
From:   Thomas Tai <thomas.tai@...cle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, mr.nuke.me@...il.com
Subject: Re: [PATCH V3 1/1] PCI/AER: add pcie TLP header information in the
 tracepoint



On 2018-05-09 08:38 AM, Steven Rostedt wrote:
> On Tue,  8 May 2018 19:04:56 -0400
> Thomas Tai <thomas.tai@...cle.com> wrote:
> 
>> When a PCIe AER occurs, the TLP header information is
>> printed in the kernel message but it is missing from
>> the tracepoint. A userspace program can use this information
>> in the tracepoint to better analyze problems.
>>
>> To enable the tracepoint:
>> echo 1 > /sys/kernel/debug/tracing/events/ras/aer_event/enable
>>
>> Example tracepoint output:
>> cat /sys/kernel/debug/tracing/trace
>> aer_event: 0000:01:00.0
>> PCIe Bus Error: severity=Uncorrected, non-fatal, Completer Abort
>> TLP Header={0x0,0x1,0x2,0x3}
>>
>> Signed-off-by: Thomas Tai <thomas.tai@...cle.com>
>> ---
> 
> Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

Thank you very much Steven.

-Thomas

> 
> -- Steve
>