linux-kernel - Re: [PATCH] aerdrv: Fix severity usage in aer trace event

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Date:	Sun, 8 Dec 2013 13:09:31 +0800
From:	Ethan Zhao <ethan.kernel@...il.com>
To:	Rui Wang <ruiv.wang@...il.com>
Cc:	Borislav Petkov <bp@...en8.de>, Lance Ortiz <lance.ortiz@...com>,
	Bjorn Helgaas <bhelgaas@...gle.com>, lance_ortiz@...mail.com,
	jiang.liu@...el.com, tony.luck@...el.com, rostedt@...dmis.org,
	linux-acpi@...r.kernel.org, linux-pci <linux-pci@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, gong.chen@...ux.intel.com,
	m.chehab@...sung.com, Rui Wang <rui.y.wang@...el.com>
Subject: Re: [PATCH] aerdrv: Fix severity usage in aer trace event

Rui,
  I like this patch.  thanks your revision.

Ethan

On Sun, Dec 8, 2013 at 12:17 PM, Rui Wang <ruiv.wang@...il.com> wrote:
> There's inconsistency between dmesg and the trace event output.
> When dmesg says "severity=Corrected", the trace event says
> "severity=Fatal". What happens is that HW_EVENT_ERR_CORRECTED is
> defined in edac.h:
>
> enum hw_event_mc_err_type {
>         HW_EVENT_ERR_CORRECTED,
>         HW_EVENT_ERR_UNCORRECTED,
>         HW_EVENT_ERR_FATAL,
>         HW_EVENT_ERR_INFO,
> };
>
> while aer_print_error() uses aer_error_severity_string[] defined as:
>
> static const char *aer_error_severity_string[] = {
>         "Uncorrected (Non-Fatal)",
>         "Uncorrected (Fatal)",
>         "Corrected"
> };
>
> In this case dmesg is correct because info->severity is assigned in
> aer_isr_one_error() using the definitions in include/linux/ras.h:
>
> Signed-off-by: Rui Wang <rui.y.wang@...el.com>
> ---
>  include/trace/events/ras.h |   10 +++++-----
>  1 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/include/trace/events/ras.h b/include/trace/events/ras.h
> index 88b8783..1c875ad 100644
> --- a/include/trace/events/ras.h
> +++ b/include/trace/events/ras.h
> @@ -5,7 +5,7 @@
>  #define _TRACE_AER_H
>
>  #include <linux/tracepoint.h>
> -#include <linux/edac.h>
> +#include <linux/aer.h>
>
>
>  /*
> @@ -63,10 +63,10 @@ TRACE_EVENT(aer_event,
>
>         TP_printk("%s PCIe Bus Error: severity=%s, %s\n",
>                 __get_str(dev_name),
> -               __entry->severity == HW_EVENT_ERR_CORRECTED ? "Corrected" :
> -                       __entry->severity == HW_EVENT_ERR_FATAL ?
> -                       "Fatal" : "Uncorrected",
> -               __entry->severity == HW_EVENT_ERR_CORRECTED ?
> +               __entry->severity == AER_CORRECTABLE ? "Corrected" :
> +                       __entry->severity == AER_FATAL ?
> +                       "Fatal" : "Uncorrected, non-fatal",
> +               __entry->severity == AER_CORRECTABLE ?
>                 __print_flags(__entry->status, "|", aer_correctable_errors) :
>                 __print_flags(__entry->status, "|", aer_uncorrectable_errors))
>  );
> --
> 1.7.5.4
>
> --
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