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Date:   Thu, 26 Jan 2023 14:22:09 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Keith Busch <kbusch@meta.com>
Cc:     <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        <willy@infradead.org>, <hch@lst.de>, <tonyb@cybernetics.com>,
        <kernel-team@meta.com>, Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCHv4 00/12] dmapool enhancements
Message-Id: <20230126142209.b3546fc52f3f13ddcda67bac@linux-foundation.org>
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On Thu, 26 Jan 2023 13:51:13 -0800 Keith Busch <kbusch@meta.com> wrote:

> Time spent in dma_pool alloc/free increases linearly with the number of
> pages backing the pool. We can reduce this to constant time with minor
> changes to how free pages are tracked.

Do we have any performance testing results for realistic workloads?