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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 2/2]: pkt_sched: Convert CBQ to tasklet_hrtimer.
Date: Fri, 28 Aug 2009 12:30:35 -0700 (PDT)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 28 Aug 2009 17:54:53 +0200

> I now have these dmesg warnings when playing with cbq
> 
> # tc qdisc del dev eth3 root
> # tc qdisc add dev eth3 root handle 1: est 1sec 8sec cbq avpkt 1000 rate 1000Mbit bandwidth 1000Mbit
> # tc qdisc del dev eth3 root
> 
> [12786.458485] Attempt to kill tasklet from interrupt
> [12786.458522] Attempt to kill tasklet from interrupt
> [12786.465261] Attempt to kill tasklet from interrupt
> [12786.465286] Attempt to kill tasklet from interrupt
> 
> probably becauce cbq_reset() being called from interrupt context ?

Grumble... I guess the tasklet_hrtimer infrastructure is less
of a direct plugin replacement for plain hrtimers than I thought.

Anyone have any ideas about how to deal with stuff like this?