From: Christoph Lameter <cl@linux.com>
To: Andreas Mohr <andi@lisas.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Jesper Dangaard Brouer <brouer@redhat.com>
Subject: Re: [PATCH 6/6] mm/slab: allocation fastpath without disabling irq
Date: Mon, 5 Jan 2015 11:52:35 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.11.1501051151200.25076@gentwo.org> (raw)
In-Reply-To: <20150105172139.GA11201@rhlx01.hs-esslingen.de>
On Mon, 5 Jan 2015, Andreas Mohr wrote:
> These thoughts also mean that I'm unsure (difficult to determine)
> of whether this change is good (i.e. a clean step in the right direction),
> or whether instead the implementation could easily directly be made
> fully independent from IRQ constraints.
We have thought a couple of times about making it independent of
interrupts. We can do that if there is guarantee that no slab operations
are going to be performed from an interrupt context. That in turn will
simplify allocator design significantly.
Regarding this patchset: I think this has the character of an RFC at this
point. There are some good ideas here but this needs to mature a bit and
get lots of feedback.
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next prev parent reply other threads:[~2015-01-05 17:52 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-05 1:37 [PATCH 0/6] mm/slab: optimize allocation fastpath Joonsoo Kim
2015-01-05 1:37 ` [PATCH 1/6] mm/slab: fix gfp flags of percpu allocation at boot phase Joonsoo Kim
2015-01-05 1:37 ` [PATCH 2/6] mm/slab: remove kmemleak_erase() call Joonsoo Kim
2015-01-08 12:01 ` Catalin Marinas
2015-01-05 1:37 ` [PATCH 3/6] mm/slab: clean-up __ac_get_obj() to prepare future changes Joonsoo Kim
2015-01-05 1:37 ` [PATCH 4/6] mm/slab: rearrange irq management Joonsoo Kim
2015-01-05 1:37 ` [PATCH 5/6] mm/slab: cleanup ____cache_alloc() Joonsoo Kim
2015-01-05 1:37 ` [PATCH 6/6] mm/slab: allocation fastpath without disabling irq Joonsoo Kim
2015-01-05 15:28 ` Christoph Lameter
2015-01-06 1:04 ` Joonsoo Kim
2015-01-05 17:21 ` Andreas Mohr
2015-01-05 17:52 ` Christoph Lameter [this message]
2015-01-06 1:31 ` Joonsoo Kim
2015-01-06 10:34 ` Andreas Mohr
2015-01-06 15:33 ` Christoph Lameter
2015-01-06 16:26 ` Andreas Mohr
2015-01-08 7:54 ` Joonsoo Kim
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