linux-kernel - Re: [PATCH 1/2] swiotlb: Rate-limit printing when running out of SW-IOMMU space

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Message-ID: <6651130c-9c13-5ba5-879a-1a8189472b7c@cogentembedded.com>
Date:   Mon, 31 Oct 2016 19:02:38 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Jonathan Corbet <corbet@....net>
Cc:     Magnus Damm <magnus.damm@...il.com>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH 1/2] swiotlb: Rate-limit printing when running out of
 SW-IOMMU space

On 10/31/2016 06:45 PM, Geert Uytterhoeven wrote:

> If the system runs out of SW-IOMMU space, changes are high successive

    s/changes/chances/?

> requests will fail, too, flooding the kernel log.  This is true
> especially for streaming DMA, which is typically used repeatedly outside
> the driver's initialization routine.  Add rate-limiting to fix this.
>
> While at it, get rid of the open-coded dev_name() handling by using the
> appropriate dev_err_*() variant.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
[...]

MBR, Sergei