From: Stephen Hemminger <shemminger@vyatta.com>
To: William Allen Simpson <william.allen.simpson@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: query: tcpdump versus atomic?
Date: Wed, 14 Oct 2009 08:59:41 -0700 [thread overview]
Message-ID: <20091014085941.6897d9d9@nehalam> (raw)
In-Reply-To: <4AD5EC2C.6070005@gmail.com>
On Wed, 14 Oct 2009 11:20:12 -0400
William Allen Simpson <william.allen.simpson@gmail.com> wrote:
> William Allen Simpson wrote:
> > Anybody know what code path tcpdump changes to running atomic?
> >
> > Is there a function to test whether you're running atomic?
> >
> To partially answer my own question, after laboriously #if'ing compiling
> section by section, it affects the tcp_minisockets.c code at
> tcp_create_openreq_child().
>
> I've not found a function to test. I've found sk->sk_allocation, but
> that doesn't seem to be dynamically updated to reflect the current state.
>
> Anyway, sorry David, but there's at least two GFP_ATOMIC here (one existing,
> one new). I've managed to change the others, by careful rearrangement. At
> least, I hope so, until some future testing reveals otherwise....
>
> --
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did you look at your ethernet's drivers code to turn on promiscuous mode.
It could be leaving irq's or bottom half disabled.
--
next prev parent reply other threads:[~2009-10-14 16:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-14 4:23 query: tcpdump versus atomic? William Allen Simpson
2009-10-14 15:20 ` William Allen Simpson
2009-10-14 15:59 ` Stephen Hemminger [this message]
2009-10-14 20:36 ` William Allen Simpson
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