netdev - Re: irq disable in __netdev_alloc

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Message-ID: <alpine.DEB.2.11.1410272129530.21936@gentwo.org>
Date:	Mon, 27 Oct 2014 21:30:24 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Jesper Dangaard Brouer <brouer@...hat.com>
cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Alexander Duyck <alexander.duyck@...il.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Network Development <netdev@...r.kernel.org>
Subject: Re: irq disable in __netdev_alloc_frag() ?

On Mon, 27 Oct 2014, Jesper Dangaard Brouer wrote:

> > Same could be done with some kmem_cache_alloc() : SLAB uses hard irq
> > masking while some caches are never used from hard irq context.
>
> Sounds interesting.

SLUB does not disable interrupts in the fast paths.

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