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From: Ben Greear <greearb@candelatech.com>
To: netdev <netdev@vger.kernel.org>
Subject: Any good documentation on RTNL
Date: Wed, 12 Dec 2012 15:15:38 -0800	[thread overview]
Message-ID: <50C9101A.6000906@candelatech.com> (raw)

I'm wondering if anyone could point me to some documentation on
the finer points of what the rtnl_lock() does?  I can't find anything
overly useful in google or the kernel docs.

For instance, can the packet rx-logic run (on other threads?) while rtnl is held?

How about tx-logic?

In particular, I'm interested to know if it is valid to have
this state:

thread 1 holds RTNL, and blocks on thread 2 due to trying to flush a work-queue.

thread 2 is processing an item on that work-queue, and the work item is sending packets
   (and blocking for up to 200ms timeout trying to flush a wifi driver's queues).

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

             reply	other threads:[~2012-12-12 23:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-12 23:15 Ben Greear [this message]
2012-12-12 23:37 ` Any good documentation on RTNL Ben Hutchings

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