From: Christoph Hellwig <hch@lst.de>
To: Michal Hocko <mhocko@suse.com>
Cc: Christoph Hellwig <hch@lst.de>,
iommu@lists.linux.dev,
Marek Szyprowski <m.szyprowski@samsung.com>,
Robin Murphy <robin.murphy@arm.com>,
David Rientjes <rientjes@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] dma-pool: limit DMA and DMA32 zone size pools
Date: Sun, 21 Aug 2022 12:44:16 +0200 [thread overview]
Message-ID: <20220821104416.GC30530@lst.de> (raw)
In-Reply-To: <Yvzk2wE7ta+zSZOQ@dhcp22.suse.cz>
On Wed, Aug 17, 2022 at 02:53:47PM +0200, Michal Hocko wrote:
> Yes this is much more reasonable estimation. Especially for the DMA
> zone. I still believe some downscaling would make sense but as said
> earlier nothing to really insist on. Also you likely want to have
> pr_warn for non-poppulated DMA zone as pointed in other thread[1].
So I think the warning would be useful, but how do we detect that the
zone should exist and is empty vs the case where it doesn't even
exist based on a runtime decision?
next prev parent reply other threads:[~2022-08-21 10:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-17 6:06 fix dma coherent pool sizing Christoph Hellwig
2022-08-17 6:06 ` [PATCH 1/3] dma-pool: factor out a calculate_pool_size helper Christoph Hellwig
2022-08-17 12:32 ` Robin Murphy
2022-08-21 10:41 ` Christoph Hellwig
2022-08-17 6:06 ` [PATCH 2/3] dma-pool: don't return errors from dma_atomic_pool_init Christoph Hellwig
2022-08-17 12:36 ` Robin Murphy
2022-08-17 6:06 ` [PATCH 3/3] dma-pool: limit DMA and DMA32 zone size pools Christoph Hellwig
2022-08-17 12:50 ` Robin Murphy
2022-08-21 10:43 ` Christoph Hellwig
2022-08-17 12:53 ` Michal Hocko
2022-08-21 10:44 ` Christoph Hellwig [this message]
2022-08-22 8:41 ` Michal Hocko
2022-08-22 11:14 ` Christoph Hellwig
2022-08-22 12:09 ` Michal Hocko
2022-08-22 12:27 ` Christoph Hellwig
2022-08-22 14:21 ` Michal Hocko
-- strict thread matches above, loose matches on Subject: below --
2022-08-22 6:12 fix dma coherent pool sizing Christoph Hellwig
2022-08-22 6:12 ` [PATCH 3/3] dma-pool: limit DMA and DMA32 zone size pools Christoph Hellwig
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