From: Eric Dumazet <edumazet@google.com>
Date: Thu, 20 Jun 2013 08:15:51 +0000 (-0700)
Subject: net: allow large number of tx queues
X-Git-Tag: v3.11-rc1~64^2~171
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60877a32bce00041528576e6b8df5abe9251fa73;p=pandora-kernel.git

net: allow large number of tx queues

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>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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