netdev - Re: PPPoE performance regression

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Message-ID: <1339656548.2141.34.camel@shinybook.infradead.org>
Date:	Thu, 14 Jun 2012 07:49:08 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Nathan Williams <nathan@...verse.com.au>,
	Karl Hiramoto <karl@...amoto.org>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	John Crispin <blogic@...nwrt.org>
Subject: Re: PPPoE performance regression

On Thu, 2012-06-14 at 16:18 +1000, Paul Mackerras wrote:
> Umm, how does ppp_output_wakeup() actually get called? 

Not directly from the destructor; it'll need to be from a tasklet like
the PPPoATM code does it. And the same race conditions, and the same
handling of them which makes me slightly uneasy as it depends quite
intimately on ppp_generic's internal locking scheme, will apply.

That's what I meant when I said I'd work out the rest of the details...

-- 
dwmw2

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