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From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: mst@redhat.com, jasowang@redhat.com, hkchu@google.com,
	netdev@vger.kernel.org
Subject: Re: [PATCH net-next] net: allow large number of tx queues
Date: Sun, 23 Jun 2013 23:57:33 -0700 (PDT)	[thread overview]
Message-ID: <20130623.235733.428837525618565559.davem@davemloft.net> (raw)
In-Reply-To: <1371716151.3252.390.camel@edumazet-glaptop>

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 20 Jun 2013 01:15:51 -0700

> From: Eric Dumazet <edumazet@google.com>
> 
> netif_alloc_netdev_queues() uses kcalloc() to allocate memory
> for the "struct netdev_queue *_tx" array.
> 
> For large number of tx queues, kcalloc() might fail, so this
> patch does a fallback to vzalloc().
> 
> As vmalloc() adds overhead on a critical network path, add __GFP_REPEAT
> to kzalloc() flags to do this fallback only when really needed.
> 
> Signed-off-by: Eric Dumazet <edumazet@google.com>

Applied, thanks Eric.

  parent reply	other threads:[~2013-06-24  6:57 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-19  5:40 [net-next rfc 0/3] increase the limit of tuntap queues Jason Wang
2013-06-19  5:40 ` [net-next rfc 1/3] net: avoid high order memory allocation for queues by using flex array Jason Wang
2013-06-19  6:31   ` Eric Dumazet
2013-06-19  7:14     ` Jason Wang
2013-06-19  9:11     ` Michael S. Tsirkin
2013-06-19  9:56       ` Eric Dumazet
2013-06-19 12:22         ` Michael S. Tsirkin
2013-06-19 15:40         ` Michael S. Tsirkin
2013-06-19 15:58           ` Eric Dumazet
2013-06-19 16:06             ` David Laight
2013-06-19 16:06               ` David Laight
2013-06-19 16:28               ` Eric Dumazet
2013-06-19 18:07             ` Michael S. Tsirkin
2013-06-20  8:15               ` [PATCH net-next] net: allow large number of tx queues Eric Dumazet
2013-06-20  8:35                 ` Michael S. Tsirkin
2013-06-21  6:41                   ` Jason Wang
2013-06-21  7:12                     ` Eric Dumazet
2013-06-23 10:29                       ` Michael S. Tsirkin
2013-06-24  6:57                 ` David Miller [this message]
2013-06-20  5:14         ` [net-next rfc 1/3] net: avoid high order memory allocation for queues by using flex array Jason Wang
2013-06-20  6:05           ` Eric Dumazet
2013-06-19  5:40 ` [net-next rfc 2/3] tuntap: reduce the size of tun_struct " Jason Wang
2013-06-19  5:40 ` [net-next rfc 3/3] tuntap: increase the max queues to 16 Jason Wang
2013-06-19  6:34   ` Eric Dumazet
2013-06-19  7:15     ` Jason Wang
2013-06-19 19:16     ` Jerry Chu

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