From: Christoph Hellwig <hch@lst.de>
To: Robin Murphy <robin.murphy@arm.com>
Cc: John Garry <john.garry@huawei.com>,
hch@lst.de, m.szyprowski@samsung.com,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
cai@gmx.us, salil.mehta@huawei.com
Subject: Re: [PATCH 3/4] dma-debug: Dynamically expand the dma_debug_entry pool
Date: Tue, 4 Dec 2018 15:17:43 +0100 [thread overview]
Message-ID: <20181204141743.GA2618@lst.de> (raw)
In-Reply-To: <70336fdc-abe8-2cea-8d8c-170b4863d884@arm.com>
On Tue, Dec 04, 2018 at 01:11:37PM +0000, Robin Murphy wrote:
> In fact, having got this far in, what I'd quite like to do is to get rid of
> dma_debug_resize_entries() such that we never need to free things at all,
> since then we could allocate whole pages as blocks of entries to save on
> masses of individual slab allocations.
Yes, we should defintively kill dma_debug_resize_entries. Allocating
page batches might sound nice, but is that going to introduce additional
complexity?
next prev parent reply other threads:[~2018-12-04 14:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 17:28 [PATCH 0/4] dma-debug: implement dynamic entry allocation Robin Murphy
2018-12-03 17:28 ` [PATCH 1/4] dma-debug: Use pr_fmt() Robin Murphy
2018-12-04 14:26 ` Christoph Hellwig
2018-12-04 17:35 ` Joe Perches
2018-12-03 17:28 ` [PATCH 2/4] dma-debug: Refactor dma_debug_entry allocation Robin Murphy
2018-12-04 14:27 ` Christoph Hellwig
2018-12-04 16:09 ` Robin Murphy
2018-12-03 17:28 ` [PATCH 3/4] dma-debug: Dynamically expand the dma_debug_entry pool Robin Murphy
2018-12-03 18:23 ` John Garry
2018-12-04 13:11 ` Robin Murphy
2018-12-04 14:17 ` Christoph Hellwig [this message]
2018-12-04 16:06 ` Robin Murphy
2018-12-04 16:30 ` John Garry
2018-12-04 17:19 ` Robin Murphy
2018-12-04 17:38 ` John Garry
2018-12-04 14:29 ` Christoph Hellwig
2018-12-04 16:32 ` Robin Murphy
2018-12-03 17:28 ` [RFC 4/4] dma-debug: Make leak-like behaviour apparent Robin Murphy
2018-12-04 14:31 ` Christoph Hellwig
2018-12-03 17:34 ` [PATCH 0/4] dma-debug: implement dynamic entry allocation Christoph Hellwig
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