netdev - Re: [PATCH net-next] net: allow large number of tx queues

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20130623.235733.428837525618565559.davem@davemloft.net>
Date:	Sun, 23 Jun 2013 23:57:33 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	mst@...hat.com, jasowang@...hat.com, hkchu@...gle.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: allow large number of tx queues

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

> From: Eric Dumazet <edumazet@...gle.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@...gle.com>

Applied, thanks Eric.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html