netdev - Re: question on pktgen shutdown logic.

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Message-ID: <1369265749.3301.372.camel@edumazet-glaptop>
Date:	Wed, 22 May 2013 16:35:49 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: question on pktgen shutdown logic.

On Wed, 2013-05-22 at 16:28 -0700, Ben Greear wrote:

> Ahh, so it waits for the pktgen_thread_worker method to return?
> 
> Why do we bother with the pktgen_exiting flag at all...it
> would seem that just checking kthread_should_stop() would
> do the trick?

If you have 4096 cpus, setting pktgen_exiting permits all pktgen exiting
faster.

Otherwise you wait about 400 seconds (4096 * HZ/10)

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