linux-kernel - Re: [PATCH] isci: Make warning messages unique

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Message-ID: <CABE8wwvkCG7coTpXWOYAo7xymRnKHQgr=TNVEUCgaC_YnjTpSw@mail.gmail.com>
Date:	Tue, 13 Sep 2011 12:38:09 -0700
From:	"Williams, Dan J" <dan.j.williams@...el.com>
To:	Tim Gardner <tim.gardner@...onical.com>
Cc:	edmund.nadolski@...el.com, dave.jiang@...el.com,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH] isci: Make warning messages unique

On Mon, Sep 12, 2011 at 1:46 PM, Tim Gardner <tim.gardner@...onical.com> wrote:
> Hi,
>
> I've got a 2-way Sandybridge server with an 'Intel(R) C600 SAS Controller'.
> The driver makes a boatload of dmesg noise with non-unique messages
> distinguished only by the event code. For example, I've got 296 of these in
> dmesg:
>
> (NULL device *): sci_phy_event_handler:735: PHY starting substate machine
> received unexpected event_code b3402000
>
> In an effort to discover which of the 9 places from which this message was
> emitted I added a line number.
>
> The next step is to decide if all of these really need to be dev_warn().

Can you describe your storage layout?  I'd like to move these to
dev_dbg() but I want to verify that the reports are benign.
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