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Re: patch for common networking error messages

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: Re: patch for common networking error messages
From: Janice M Girouard <janiceg@xxxxxxxxxx>
Date: Mon, 16 Jun 2003 15:59:11 -0500
Cc: linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, Daniel Stekloff <stekloff@xxxxxxxxxx>, Janice Girouard <girouard@xxxxxxxxxx>, Larry Kessler <lkessler@xxxxxxxxxx>, kenistonj@xxxxxxxxxx, jgarzik@xxxxxxxxx
Organization: IBM Linux Technology Center - Network Device Drivers
References: <3EEE28DE.6040808@us.ibm.com> <20030616.133841.35533284.davem@redhat.com>
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I agree that it's not desirable to introduce a bunch of messages that we aren't already logging. I didn't show the netif_msg prefix because I was trying to focus the patch on the common messages, but you would normally proceed a message with:

if netif_msg_link()
  printk("some text to indicate the link is up/down")

The netif_msg_link test would normally filter out what messages should be logged.

Or, just leave out the message call. I added one or two messages to the tg3 and e1000 drivers to demonstrate where you might use these common messages... just to show that various drivers could use the text. Actually using the specific message would be completely up to the developer.

Jaince



David S. Miller wrote:

  From: Janice M Girouard <janiceg@xxxxxxxxxx>
  Date: Mon, 16 Jun 2003 15:30:22 -0500

  EMSG_NET_LINK_UP     "%s: state change: link up, %d Mbps, %s-duplex\n"

Should indicate flow control state too.

  EMSG_NET_START_QUEUE "%s: performance event: (re)starting netdev queue\n"
  EMSG_NET_STOP_QUEUE  "%s: performance event: stopping netdev queue\n"

Oh _ABSOLUTELY NOT_, you're not printing a message
for normal events like this.  Especially those that are
going to occur on highly loaded systems.






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