From: Florian Fainelli <f.fainelli@gmail.com>
To: Doug Berger <opendmb@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Cc: bcm-kernel-feedback-list@broadcom.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] net: systemport: suppress warnings on failed Rx SKB allocations
Date: Thu, 23 Apr 2020 18:47:58 -0700 [thread overview]
Message-ID: <c0c2038c-c393-019e-3869-47b27a512a96@gmail.com> (raw)
In-Reply-To: <1587683610-4342-1-git-send-email-opendmb@gmail.com>
On 4/23/2020 4:13 PM, Doug Berger wrote:
> The driver is designed to drop Rx packets and reclaim the buffers
> when an allocation fails, and the network interface needs to safely
> handle this packet loss. Therefore, an allocation failure of Rx
> SKBs is relatively benign.
>
> However, the output of the warning message occurs with a high
> scheduling priority that can cause excessive jitter/latency for
> other high priority processing.
>
> This commit suppresses the warning messages to prevent scheduling
> problems while retaining the failure count in the statistics of
> the network interface.
>
> Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
--
Florian
next prev parent reply other threads:[~2020-04-24 1:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-23 23:13 Doug Berger
2020-04-24 1:47 ` Florian Fainelli [this message]
2020-04-24 23:50 ` David Miller
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