netdev - [RFC]: add tracepoint to net_rx_action to note polling operations

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Message-ID: <20090420112731.GD32254@hmsreliant.think-freely.org>
Date:	Mon, 20 Apr 2009 07:27:31 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	netdev@...r.kernel.org
Cc:	nhorman@...driver.com
Subject: [RFC]: add tracepoint to net_rx_action to note polling operations

Hey all-
	I was thinking about adding an additional tracepoint to net_rx_action,
right before the call to dev->poll().  One of the things thats missing from my
dropwatch utility is the ability to detect hardware drops, and I was thinking I
could implement that by noting when devices were being polled by napi, and at
that time querying the devices stats.

	I know however, that adding tracepoints isn't always desireable, so I
thought I would solicit opinions here to see if anyone else would find such a
tracepoint usefull, or in the event they had strong objectsions to such a point.

Thanks!
Neil

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