Re: [PATCH] net: remove dev_txq_stats_fold()

[David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>]

From: Eric Dumazet <eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date: Wed, 12 Jan 2011 23:13:14 +0100

> [PATCH v2] net: remove dev_txq_stats_fold()
> 
> After recent changes, (percpu stats on vlan/tunnels...), we dont need
> anymore per struct netdev_queue tx_bytes/tx_packets/tx_dropped counters.
> 
> Only remaining users are ixgbe, sch_teql, gianfar & macvlan :
> 
> 1) ixgbe can be converted to use existing tx_ring counters.
> 
> 2) macvlan incremented txq->tx_dropped, it can use the
> dev->stats.tx_dropped counter.
> 
> 3) sch_teql : almost revert ab35cd4b8f42 (Use net_device internal stats)
>     Now we have ndo_get_stats64(), use it, even for "unsigned long"
> fields (No need to bring back a struct net_device_stats)
> 
> 4) gianfar adds a stats structure per tx queue to hold
> tx_bytes/tx_packets
> 
> This removes a lockdep warning (and possible lockup) in rndis gadget,
> calling dev_get_stats() from hard IRQ context.
> 
> Ref: http://www.spinics.net/lists/netdev/msg149202.html
> 
> Reported-by: Neil Jones <neiljay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Signed-off-by: Eric Dumazet <eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> CC: Jarek Poplawski <jarkao2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> CC: Alexander Duyck <alexander.h.duyck-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> CC: Jeff Kirsher <jeffrey.t.kirsher-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> CC: Sandeep Gopalpet <sandeep.kumar-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> CC: Michal Nazarewicz <mina86-deATy8a+UHjQT0dZR+AlfA@public.gmane.org>

Applied, thanks everyone.
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