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

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Message-ID: <20180509083814.149e8d8f@gandalf.local.home>
Date:   Wed, 9 May 2018 08:38:14 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Thomas Tai <thomas.tai@...cle.com>
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 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>

-- Steve